The Best Humidifier Without Filter : Updated Reviews and Buying Guide

1) LEVOIT Ultrasonic Smart Humidifier for Large Room

Special features: transparent water tank, digital display with sensitive touch buttons, aromatherapy, item weight; 4.92 pounds, high-quality ABS plastic.

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them

Its size is probably the biggest problem in this device. Expect to refill it frequently and keep it on charge more often than you can use it. On the positive side, it is portable, and you can always use it whenever you work or study, 

Key Features

• Easy to use 
• Simple design 
• Auto shut-off
• Vapo Pads available for soothing vapors 

Basic Parameters 

My Rating: 4.2/5

6) Pureguardian H940 Ultrasonic Cool Mist Humidifier

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Factors to Consider When Choosing the Best Filter–Free Humidifiers

Room Capacity

The area of the room that the unit can serve should always be taken into consideration, as smaller units would always lead to poorer performances. Therefore, I have included this very important detail in each review I’ve written here. 

Auto Shutoff

Since filterless humidifiers are mostly small and have smaller tanks compared to regular whole-house humidifiers, the water in the tank would certainly run dry faster. Hence the need for the auto-shutoff feature, which turns the unit off to avoid unnecessary power consumption and overheating that could lead to fire hazards.

360-Degree Nozzle

This is useful in homes when you want to direct mist produces to a specific position, and since they aren’t whole-house humidifiers, you would most likely do that more often than none, hence having a humidifier with this feature would make for a better user experience.

My Final Verdict: Picking the Best Humidifier without Filter

My recommendation on the best filterless humidifier for you is actually the LEVOIT Ultrasonic Smart Humidifier for large rooms, mainly due to its ability to serve rooms of large sizes for a device that is small. It also possesses digital and automated features that make using the unit pretty convenient, while its compatibility with essential oils makes it worth the buy.

On the other hand, the Everlasting Comfort humidifier is also a good choice, being able to run for a really long time and possessing a 360–degree nozzle with an auto-shutoff function, to mention a few. It can also serve rooms of large sizes.

And if you want a portable and small unit with a cool mist feature with aromatherapy, I recommend scrolling through my picks to find the device suitable for your needs.

Related Posts:

• Best Humidifier for dry mouth
• Boneco U200 reviews
• Boneco U350 review
• Aprillaire 800 reviews
• Best Humidifier for desert climate
• Best Humidifier for croup
• Best Humidifiers for asthma and allergies

This is a compact–sized humidifier with a really small footprint and wouldn’t take up space around the home. It is suitable to be used as a tabletop type, doing a good job of increasing the moisture content level of the atmosphere. Although it can run for up to 24 hours on the lowest setting, the water tank is pretty small compared to most, and on the highest setting, it would last only about a few hours.

Feelings After Using the Product

The mist production system of this humidifier supports only cool mists, which isn’t exactly the best out there and could be a real drag during winter periods.

It features a good design, though, having similarities with the crane type, with a transparent water tank stacked between the bottom control section and a top cover containing the mist nozzle. 

The controls are varied by using an analog knob for choosing between different speeds, while the water level can be easily monitored by the user through the transparent tank.

Basically, the Honeywell humidifier is very similar to the Crane one in its design and even controls. 

An auto-shutoff feature is also present for times when the water in the tank runs out, putting off the device with immediate effect in order to avoid overheating and hence fire hazards and when it is time to actually refill the tank. 

I didn’t have any problem filling up the tank. The humidifier has a wide opening at the top side where I could easily pour water in and attach it back to the other part of the unit.

It should only be used with distilled water due to the absence of a filter and being an ultrasonic type; it is most likely to produce fine dust when used with hard water.

Cleaning overall was easy to carry out, too, mainly due to the opening at the top and its design that can be taken apart quickly,.

Common Problems and How to Deal with Them

Honeywell seems to be a budget version of the Crane humidifier but no less reliable. The Honeywell device lacks nightlight as well as aromatherapy. Apart from that, if these features aren’t of priority, you will surely enjoy the humidifier. 

Key Features

• Auto shut-off when empty 
• Directional mist outlet 

Basic Parameters 

My Rating: 4.5/5

5) Vicks Mini Filter Free Cool Mist Humidifier

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them

Its size is probably the biggest problem in this device. Expect to refill it frequently and keep it on charge more often than you can use it. On the positive side, it is portable, and you can always use it whenever you work or study, 

Key Features

• Easy to use 
• Simple design 
• Auto shut-off
• Vapo Pads available for soothing vapors 

Basic Parameters 

My Rating: 4.2/5

6) Pureguardian H940 Ultrasonic Cool Mist Humidifier

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Factors to Consider When Choosing the Best Filter–Free Humidifiers

Room Capacity

The area of the room that the unit can serve should always be taken into consideration, as smaller units would always lead to poorer performances. Therefore, I have included this very important detail in each review I’ve written here. 

Auto Shutoff

Since filterless humidifiers are mostly small and have smaller tanks compared to regular whole-house humidifiers, the water in the tank would certainly run dry faster. Hence the need for the auto-shutoff feature, which turns the unit off to avoid unnecessary power consumption and overheating that could lead to fire hazards.

360-Degree Nozzle

This is useful in homes when you want to direct mist produces to a specific position, and since they aren’t whole-house humidifiers, you would most likely do that more often than none, hence having a humidifier with this feature would make for a better user experience.

My Final Verdict: Picking the Best Humidifier without Filter

My recommendation on the best filterless humidifier for you is actually the LEVOIT Ultrasonic Smart Humidifier for large rooms, mainly due to its ability to serve rooms of large sizes for a device that is small. It also possesses digital and automated features that make using the unit pretty convenient, while its compatibility with essential oils makes it worth the buy.

On the other hand, the Everlasting Comfort humidifier is also a good choice, being able to run for a really long time and possessing a 360–degree nozzle with an auto-shutoff function, to mention a few. It can also serve rooms of large sizes.

And if you want a portable and small unit with a cool mist feature with aromatherapy, I recommend scrolling through my picks to find the device suitable for your needs.

Related Posts:

• Best Humidifier for dry mouth
• Boneco U200 reviews
• Boneco U350 review
• Aprillaire 800 reviews
• Best Humidifier for desert climate
• Best Humidifier for croup
• Best Humidifiers for asthma and allergies

Well known for its award-winning design and ability to effectively increase the moisture content in the atmosphere, this crane ultrasonic humidifier helps in good night sleep by relieving cough, cold, and flu symptoms.

Feelings After Using the Product

The teardrop design of this device is a real beauty to behold, with curves around the sides, slanting to a pinpoint top side where the 360–degree mist nozzle exists, which gives the user the option of deciding the mist direction.

Like all other filters on my list, this unit is filter-free, hence an assured reduction in operating costs since you wouldn’t have to purchase any replacements, alongside an easier maintenance schedule. 

The unit has been designed to serve rooms of really large sizes, up to 500 sqft, and considering the size of this unit, it is a pretty impressive feat. This time, my living room was too big for the humidifier, so I placed it in my bedroom. And unlike other devices in my list, this one operated exceptionally silently. I set it at night with some fragrance oil and a soothing nightlight to help me sleep. 

When it comes to learning how to use the device, there is an analog control knob. It may look simple and basic with ON/OFF buttons and humidity control, but the price was right, too. 

A major portion of the water tank is transparent, doubling as both a fine design and an easy way to help monitor the water tank level. With a 1-gallon capacity, the unit can run for up to 24hrs without needing a refill.

The device overall is easy to clean and maintain and has the auto-shutoff feature for protection in case the tank runs dry, while refilling the water tank isn’t much of a fuss. Yet again, my reminder to everyone wanting to buy any humidifier without a filter is to use distilled water only in order to avoid problems of white dust.

Common Problems and How to Deal with Them

Since I placed the humidifier in my bedroom, I realized that in winter it could get a bit cold with the device running. So far, this is the only downside of the device – not having a warm mist feature. 

Key Features

• Award-winning design
• 360-degree mist lid
• Night light 
• Easy to use

Basic Parameters 

My Rating: 4.8/5

4) Honeywell HUL535b Cool Mist Humidifier      

This is a compact–sized humidifier with a really small footprint and wouldn’t take up space around the home. It is suitable to be used as a tabletop type, doing a good job of increasing the moisture content level of the atmosphere. Although it can run for up to 24 hours on the lowest setting, the water tank is pretty small compared to most, and on the highest setting, it would last only about a few hours.

Feelings After Using the Product

The mist production system of this humidifier supports only cool mists, which isn’t exactly the best out there and could be a real drag during winter periods.

It features a good design, though, having similarities with the crane type, with a transparent water tank stacked between the bottom control section and a top cover containing the mist nozzle. 

The controls are varied by using an analog knob for choosing between different speeds, while the water level can be easily monitored by the user through the transparent tank.

Basically, the Honeywell humidifier is very similar to the Crane one in its design and even controls. 

An auto-shutoff feature is also present for times when the water in the tank runs out, putting off the device with immediate effect in order to avoid overheating and hence fire hazards and when it is time to actually refill the tank. 

I didn’t have any problem filling up the tank. The humidifier has a wide opening at the top side where I could easily pour water in and attach it back to the other part of the unit.

It should only be used with distilled water due to the absence of a filter and being an ultrasonic type; it is most likely to produce fine dust when used with hard water.

Cleaning overall was easy to carry out, too, mainly due to the opening at the top and its design that can be taken apart quickly,.

Common Problems and How to Deal with Them

Honeywell seems to be a budget version of the Crane humidifier but no less reliable. The Honeywell device lacks nightlight as well as aromatherapy. Apart from that, if these features aren’t of priority, you will surely enjoy the humidifier. 

Key Features

• Auto shut-off when empty 
• Directional mist outlet 

Basic Parameters 

My Rating: 4.5/5

5) Vicks Mini Filter Free Cool Mist Humidifier

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them

Its size is probably the biggest problem in this device. Expect to refill it frequently and keep it on charge more often than you can use it. On the positive side, it is portable, and you can always use it whenever you work or study, 

Key Features

• Easy to use 
• Simple design 
• Auto shut-off
• Vapo Pads available for soothing vapors 

Basic Parameters 

My Rating: 4.2/5

6) Pureguardian H940 Ultrasonic Cool Mist Humidifier

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Factors to Consider When Choosing the Best Filter–Free Humidifiers

Room Capacity

The area of the room that the unit can serve should always be taken into consideration, as smaller units would always lead to poorer performances. Therefore, I have included this very important detail in each review I’ve written here. 

Auto Shutoff

Since filterless humidifiers are mostly small and have smaller tanks compared to regular whole-house humidifiers, the water in the tank would certainly run dry faster. Hence the need for the auto-shutoff feature, which turns the unit off to avoid unnecessary power consumption and overheating that could lead to fire hazards.

360-Degree Nozzle

This is useful in homes when you want to direct mist produces to a specific position, and since they aren’t whole-house humidifiers, you would most likely do that more often than none, hence having a humidifier with this feature would make for a better user experience.

My Final Verdict: Picking the Best Humidifier without Filter

My recommendation on the best filterless humidifier for you is actually the LEVOIT Ultrasonic Smart Humidifier for large rooms, mainly due to its ability to serve rooms of large sizes for a device that is small. It also possesses digital and automated features that make using the unit pretty convenient, while its compatibility with essential oils makes it worth the buy.

On the other hand, the Everlasting Comfort humidifier is also a good choice, being able to run for a really long time and possessing a 360–degree nozzle with an auto-shutoff function, to mention a few. It can also serve rooms of large sizes.

And if you want a portable and small unit with a cool mist feature with aromatherapy, I recommend scrolling through my picks to find the device suitable for your needs.

Related Posts:

• Best Humidifier for dry mouth
• Boneco U200 reviews
• Boneco U350 review
• Aprillaire 800 reviews
• Best Humidifier for desert climate
• Best Humidifier for croup
• Best Humidifiers for asthma and allergies

This is a humidifier with catchy looks, as the overall transparent water tank gets much of the attention, while the front side carries the digital displays and buttons, acts as a human-machine interface, for easy communication and control.

Feelings After Using the Product

The digital display shows the reading of the immediate humidity level in the atmosphere at every point in time. Its water tank is built with a capacity of up to 6 liters, which is pretty large, affording the unit a runtime of up to 60 hours at the lowest mist output rate.

Another reason why I liked this humidifier is due to the fact that it is capable of detecting plants nearby and adjusting humidity to their level. 

The humidistat in the device takes the measurements of humidity and automatically adjusts the level. So, I could choose a set humidity level in which I wanted the unit to run.

Another thing that I found particularly convenient is the app. I could remotely control the humidifier without forcing myself to pause from work (especially when you’re in the middle of a meeting).

While operating, the noise level is really low, too. The humidifier is an ultrasonic type, and it is also compatible with aromatherapy. All I needed to do was to lift the cap and add a few droplets of oil – that simple.

I tested the humidifier in the living room, which is quite spacy. Glad to say the humidifier performed well, and I can surely say the device can serve any large-sized room or office. 

Common Problems and How to Deal with Them

During my experiment with the device, there was one problem that nobody can really avoid – cleaning. I’ve tested aromatherapy and night modes, and throughout the whole time, I used either purified or distilled water as suggested by the manufacturer. 

I had to clean the humidifier only once a month – however, if you plan on using regular water, you may need to clean the device more often. 

Key Features

• Transparent water tank
• Digital display with sensitive touch buttons
• Sleep mode
• Aromatherapy
• Plant health

Basic Parameters 

My Rating: 5/5

This vaporizer–type cool mist humidifier has been specially built to counter the effects of low moisture problems alongside its ability to combat allergies, sinuses, and cough.

Feelings After Using the Product

A larger portion of the unit’s body constitutes the water tank, which makes the tank really large with about 6 liters in capacity, therefore giving the device enough backup to run for up to 6 days before a refill is needed. The bottom side, though, is where you would find the controls, as it features the old system but is easy to use an analog knob, whereby it allows the user to vary several preferences according to their choice.

The mist output rate of this unit is pretty high, averaging up to 270ml/hr. I found it pretty impressive. The device also has enough capacity to increase or maintain the humidity level in the environment it is placed in. 

My living room was once again the testing room where I placed the humidifier. Just like LEVOIT, Everlasting Comfort did a pretty good job. So, this could be your second option for large-sized rooms. 

The humidifier performed well without the use of a filter which obviously saved me the extra cash spent on filter replacements and maintenance.

Using the device was pretty straightforward with the controls. Refilling the tank was as simple as it could be. The opening at the top is exactly where I poured water into the tank. As with any humidifier in my review, I only use distilled or purified water. 

When refilling, I would suggest using a towel to cover the bottom part in order to avoid condensation during the process of the refill.

The mist output nozzle at the top is designed with a 360–degree rotational capacity, hence is able to point out mist at different locations in the home. 

It also supports aromatherapy, so my fragrance oil came in handy here, too. The nice smell and quiet operation were very calming. I ran it a few times in the late evening and let the device automatically turn off as soon as all the water is vaporized. 

Common Problems and How to Deal with Them

Apart from once-a-month cleaning, I would recommend being a bit careful when filling up the tank. Once full, it becomes quite heavy to carry around. 

Key Features

• Aromatherapy
• Night light
• Large water tank
• Auto shut-off feature

Basic Parameters 

My Rating: 5/5

3) Crane Ultrasonic Cool Mist Humidifier

Special features: award-winning design, item dimensions: 8.6 x 13.4 x 8.6, item weight: 4.5 pounds.

Well known for its award-winning design and ability to effectively increase the moisture content in the atmosphere, this crane ultrasonic humidifier helps in good night sleep by relieving cough, cold, and flu symptoms.

Feelings After Using the Product

The teardrop design of this device is a real beauty to behold, with curves around the sides, slanting to a pinpoint top side where the 360–degree mist nozzle exists, which gives the user the option of deciding the mist direction.

Like all other filters on my list, this unit is filter-free, hence an assured reduction in operating costs since you wouldn’t have to purchase any replacements, alongside an easier maintenance schedule. 

The unit has been designed to serve rooms of really large sizes, up to 500 sqft, and considering the size of this unit, it is a pretty impressive feat. This time, my living room was too big for the humidifier, so I placed it in my bedroom. And unlike other devices in my list, this one operated exceptionally silently. I set it at night with some fragrance oil and a soothing nightlight to help me sleep. 

When it comes to learning how to use the device, there is an analog control knob. It may look simple and basic with ON/OFF buttons and humidity control, but the price was right, too. 

A major portion of the water tank is transparent, doubling as both a fine design and an easy way to help monitor the water tank level. With a 1-gallon capacity, the unit can run for up to 24hrs without needing a refill.

The device overall is easy to clean and maintain and has the auto-shutoff feature for protection in case the tank runs dry, while refilling the water tank isn’t much of a fuss. Yet again, my reminder to everyone wanting to buy any humidifier without a filter is to use distilled water only in order to avoid problems of white dust.

Common Problems and How to Deal with Them

Since I placed the humidifier in my bedroom, I realized that in winter it could get a bit cold with the device running. So far, this is the only downside of the device – not having a warm mist feature. 

Key Features

• Award-winning design
• 360-degree mist lid
• Night light 
• Easy to use

Basic Parameters 

My Rating: 4.8/5

4) Honeywell HUL535b Cool Mist Humidifier      

This is a compact–sized humidifier with a really small footprint and wouldn’t take up space around the home. It is suitable to be used as a tabletop type, doing a good job of increasing the moisture content level of the atmosphere. Although it can run for up to 24 hours on the lowest setting, the water tank is pretty small compared to most, and on the highest setting, it would last only about a few hours.

Feelings After Using the Product

The mist production system of this humidifier supports only cool mists, which isn’t exactly the best out there and could be a real drag during winter periods.

It features a good design, though, having similarities with the crane type, with a transparent water tank stacked between the bottom control section and a top cover containing the mist nozzle. 

The controls are varied by using an analog knob for choosing between different speeds, while the water level can be easily monitored by the user through the transparent tank.

Basically, the Honeywell humidifier is very similar to the Crane one in its design and even controls. 

An auto-shutoff feature is also present for times when the water in the tank runs out, putting off the device with immediate effect in order to avoid overheating and hence fire hazards and when it is time to actually refill the tank. 

I didn’t have any problem filling up the tank. The humidifier has a wide opening at the top side where I could easily pour water in and attach it back to the other part of the unit.

It should only be used with distilled water due to the absence of a filter and being an ultrasonic type; it is most likely to produce fine dust when used with hard water.

Cleaning overall was easy to carry out, too, mainly due to the opening at the top and its design that can be taken apart quickly,.

Common Problems and How to Deal with Them

Honeywell seems to be a budget version of the Crane humidifier but no less reliable. The Honeywell device lacks nightlight as well as aromatherapy. Apart from that, if these features aren’t of priority, you will surely enjoy the humidifier. 

Key Features

• Auto shut-off when empty 
• Directional mist outlet 

Basic Parameters 

My Rating: 4.5/5

5) Vicks Mini Filter Free Cool Mist Humidifier

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them

Its size is probably the biggest problem in this device. Expect to refill it frequently and keep it on charge more often than you can use it. On the positive side, it is portable, and you can always use it whenever you work or study, 

Key Features

• Easy to use 
• Simple design 
• Auto shut-off
• Vapo Pads available for soothing vapors 

Basic Parameters 

My Rating: 4.2/5

6) Pureguardian H940 Ultrasonic Cool Mist Humidifier

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Factors to Consider When Choosing the Best Filter–Free Humidifiers

Room Capacity

The area of the room that the unit can serve should always be taken into consideration, as smaller units would always lead to poorer performances. Therefore, I have included this very important detail in each review I’ve written here. 

Auto Shutoff

Since filterless humidifiers are mostly small and have smaller tanks compared to regular whole-house humidifiers, the water in the tank would certainly run dry faster. Hence the need for the auto-shutoff feature, which turns the unit off to avoid unnecessary power consumption and overheating that could lead to fire hazards.

360-Degree Nozzle

This is useful in homes when you want to direct mist produces to a specific position, and since they aren’t whole-house humidifiers, you would most likely do that more often than none, hence having a humidifier with this feature would make for a better user experience.

My Final Verdict: Picking the Best Humidifier without Filter

My recommendation on the best filterless humidifier for you is actually the LEVOIT Ultrasonic Smart Humidifier for large rooms, mainly due to its ability to serve rooms of large sizes for a device that is small. It also possesses digital and automated features that make using the unit pretty convenient, while its compatibility with essential oils makes it worth the buy.

On the other hand, the Everlasting Comfort humidifier is also a good choice, being able to run for a really long time and possessing a 360–degree nozzle with an auto-shutoff function, to mention a few. It can also serve rooms of large sizes.

And if you want a portable and small unit with a cool mist feature with aromatherapy, I recommend scrolling through my picks to find the device suitable for your needs.

Related Posts:

• Best Humidifier for dry mouth
• Boneco U200 reviews
• Boneco U350 review
• Aprillaire 800 reviews
• Best Humidifier for desert climate
• Best Humidifier for croup
• Best Humidifiers for asthma and allergies

This is a humidifier with catchy looks, as the overall transparent water tank gets much of the attention, while the front side carries the digital displays and buttons, acts as a human-machine interface, for easy communication and control.

Feelings After Using the Product

The digital display shows the reading of the immediate humidity level in the atmosphere at every point in time. Its water tank is built with a capacity of up to 6 liters, which is pretty large, affording the unit a runtime of up to 60 hours at the lowest mist output rate.

Another reason why I liked this humidifier is due to the fact that it is capable of detecting plants nearby and adjusting humidity to their level. 

The humidistat in the device takes the measurements of humidity and automatically adjusts the level. So, I could choose a set humidity level in which I wanted the unit to run.

Another thing that I found particularly convenient is the app. I could remotely control the humidifier without forcing myself to pause from work (especially when you’re in the middle of a meeting).

While operating, the noise level is really low, too. The humidifier is an ultrasonic type, and it is also compatible with aromatherapy. All I needed to do was to lift the cap and add a few droplets of oil – that simple.

I tested the humidifier in the living room, which is quite spacy. Glad to say the humidifier performed well, and I can surely say the device can serve any large-sized room or office. 

Common Problems and How to Deal with Them

During my experiment with the device, there was one problem that nobody can really avoid – cleaning. I’ve tested aromatherapy and night modes, and throughout the whole time, I used either purified or distilled water as suggested by the manufacturer. 

I had to clean the humidifier only once a month – however, if you plan on using regular water, you may need to clean the device more often. 

Key Features

• Transparent water tank
• Digital display with sensitive touch buttons
• Sleep mode
• Aromatherapy
• Plant health

Basic Parameters 

My Rating: 5/5

This vaporizer–type cool mist humidifier has been specially built to counter the effects of low moisture problems alongside its ability to combat allergies, sinuses, and cough.

Feelings After Using the Product

A larger portion of the unit’s body constitutes the water tank, which makes the tank really large with about 6 liters in capacity, therefore giving the device enough backup to run for up to 6 days before a refill is needed. The bottom side, though, is where you would find the controls, as it features the old system but is easy to use an analog knob, whereby it allows the user to vary several preferences according to their choice.

The mist output rate of this unit is pretty high, averaging up to 270ml/hr. I found it pretty impressive. The device also has enough capacity to increase or maintain the humidity level in the environment it is placed in. 

My living room was once again the testing room where I placed the humidifier. Just like LEVOIT, Everlasting Comfort did a pretty good job. So, this could be your second option for large-sized rooms. 

The humidifier performed well without the use of a filter which obviously saved me the extra cash spent on filter replacements and maintenance.

Using the device was pretty straightforward with the controls. Refilling the tank was as simple as it could be. The opening at the top is exactly where I poured water into the tank. As with any humidifier in my review, I only use distilled or purified water. 

When refilling, I would suggest using a towel to cover the bottom part in order to avoid condensation during the process of the refill.

The mist output nozzle at the top is designed with a 360–degree rotational capacity, hence is able to point out mist at different locations in the home. 

It also supports aromatherapy, so my fragrance oil came in handy here, too. The nice smell and quiet operation were very calming. I ran it a few times in the late evening and let the device automatically turn off as soon as all the water is vaporized. 

Common Problems and How to Deal with Them

Apart from once-a-month cleaning, I would recommend being a bit careful when filling up the tank. Once full, it becomes quite heavy to carry around. 

Key Features

• Aromatherapy
• Night light
• Large water tank
• Auto shut-off feature

Basic Parameters 

My Rating: 5/5

3) Crane Ultrasonic Cool Mist Humidifier

Special features: award-winning design, item dimensions: 8.6 x 13.4 x 8.6, item weight: 4.5 pounds.

Well known for its award-winning design and ability to effectively increase the moisture content in the atmosphere, this crane ultrasonic humidifier helps in good night sleep by relieving cough, cold, and flu symptoms.

Feelings After Using the Product

The teardrop design of this device is a real beauty to behold, with curves around the sides, slanting to a pinpoint top side where the 360–degree mist nozzle exists, which gives the user the option of deciding the mist direction.

Like all other filters on my list, this unit is filter-free, hence an assured reduction in operating costs since you wouldn’t have to purchase any replacements, alongside an easier maintenance schedule. 

The unit has been designed to serve rooms of really large sizes, up to 500 sqft, and considering the size of this unit, it is a pretty impressive feat. This time, my living room was too big for the humidifier, so I placed it in my bedroom. And unlike other devices in my list, this one operated exceptionally silently. I set it at night with some fragrance oil and a soothing nightlight to help me sleep. 

When it comes to learning how to use the device, there is an analog control knob. It may look simple and basic with ON/OFF buttons and humidity control, but the price was right, too. 

A major portion of the water tank is transparent, doubling as both a fine design and an easy way to help monitor the water tank level. With a 1-gallon capacity, the unit can run for up to 24hrs without needing a refill.

The device overall is easy to clean and maintain and has the auto-shutoff feature for protection in case the tank runs dry, while refilling the water tank isn’t much of a fuss. Yet again, my reminder to everyone wanting to buy any humidifier without a filter is to use distilled water only in order to avoid problems of white dust.

Common Problems and How to Deal with Them

Since I placed the humidifier in my bedroom, I realized that in winter it could get a bit cold with the device running. So far, this is the only downside of the device – not having a warm mist feature. 

Key Features

• Award-winning design
• 360-degree mist lid
• Night light 
• Easy to use

Basic Parameters 

My Rating: 4.8/5

4) Honeywell HUL535b Cool Mist Humidifier      

This is a compact–sized humidifier with a really small footprint and wouldn’t take up space around the home. It is suitable to be used as a tabletop type, doing a good job of increasing the moisture content level of the atmosphere. Although it can run for up to 24 hours on the lowest setting, the water tank is pretty small compared to most, and on the highest setting, it would last only about a few hours.

Feelings After Using the Product

The mist production system of this humidifier supports only cool mists, which isn’t exactly the best out there and could be a real drag during winter periods.

It features a good design, though, having similarities with the crane type, with a transparent water tank stacked between the bottom control section and a top cover containing the mist nozzle. 

The controls are varied by using an analog knob for choosing between different speeds, while the water level can be easily monitored by the user through the transparent tank.

Basically, the Honeywell humidifier is very similar to the Crane one in its design and even controls. 

An auto-shutoff feature is also present for times when the water in the tank runs out, putting off the device with immediate effect in order to avoid overheating and hence fire hazards and when it is time to actually refill the tank. 

I didn’t have any problem filling up the tank. The humidifier has a wide opening at the top side where I could easily pour water in and attach it back to the other part of the unit.

It should only be used with distilled water due to the absence of a filter and being an ultrasonic type; it is most likely to produce fine dust when used with hard water.

Cleaning overall was easy to carry out, too, mainly due to the opening at the top and its design that can be taken apart quickly,.

Common Problems and How to Deal with Them

Honeywell seems to be a budget version of the Crane humidifier but no less reliable. The Honeywell device lacks nightlight as well as aromatherapy. Apart from that, if these features aren’t of priority, you will surely enjoy the humidifier. 

Key Features

• Auto shut-off when empty 
• Directional mist outlet 

Basic Parameters 

My Rating: 4.5/5

5) Vicks Mini Filter Free Cool Mist Humidifier

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them

Its size is probably the biggest problem in this device. Expect to refill it frequently and keep it on charge more often than you can use it. On the positive side, it is portable, and you can always use it whenever you work or study, 

Key Features

• Easy to use 
• Simple design 
• Auto shut-off
• Vapo Pads available for soothing vapors 

Basic Parameters 

My Rating: 4.2/5

6) Pureguardian H940 Ultrasonic Cool Mist Humidifier

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Factors to Consider When Choosing the Best Filter–Free Humidifiers

Room Capacity

The area of the room that the unit can serve should always be taken into consideration, as smaller units would always lead to poorer performances. Therefore, I have included this very important detail in each review I’ve written here. 

Auto Shutoff

Since filterless humidifiers are mostly small and have smaller tanks compared to regular whole-house humidifiers, the water in the tank would certainly run dry faster. Hence the need for the auto-shutoff feature, which turns the unit off to avoid unnecessary power consumption and overheating that could lead to fire hazards.

360-Degree Nozzle

This is useful in homes when you want to direct mist produces to a specific position, and since they aren’t whole-house humidifiers, you would most likely do that more often than none, hence having a humidifier with this feature would make for a better user experience.

My Final Verdict: Picking the Best Humidifier without Filter

My recommendation on the best filterless humidifier for you is actually the LEVOIT Ultrasonic Smart Humidifier for large rooms, mainly due to its ability to serve rooms of large sizes for a device that is small. It also possesses digital and automated features that make using the unit pretty convenient, while its compatibility with essential oils makes it worth the buy.

On the other hand, the Everlasting Comfort humidifier is also a good choice, being able to run for a really long time and possessing a 360–degree nozzle with an auto-shutoff function, to mention a few. It can also serve rooms of large sizes.

And if you want a portable and small unit with a cool mist feature with aromatherapy, I recommend scrolling through my picks to find the device suitable for your needs.

Related Posts:

• Best Humidifier for dry mouth
• Boneco U200 reviews
• Boneco U350 review
• Aprillaire 800 reviews
• Best Humidifier for desert climate
• Best Humidifier for croup
• Best Humidifiers for asthma and allergies

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them

Its size is probably the biggest problem in this device. Expect to refill it frequently and keep it on charge more often than you can use it. On the positive side, it is portable, and you can always use it whenever you work or study, 

Key Features

• Easy to use 
• Simple design 
• Auto shut-off
• Vapo Pads available for soothing vapors 

Basic Parameters 

My Rating: 4.2/5

6) Pureguardian H940 Ultrasonic Cool Mist Humidifier

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Factors to Consider When Choosing the Best Filter–Free Humidifiers

Room Capacity

The area of the room that the unit can serve should always be taken into consideration, as smaller units would always lead to poorer performances. Therefore, I have included this very important detail in each review I’ve written here. 

Auto Shutoff

Since filterless humidifiers are mostly small and have smaller tanks compared to regular whole-house humidifiers, the water in the tank would certainly run dry faster. Hence the need for the auto-shutoff feature, which turns the unit off to avoid unnecessary power consumption and overheating that could lead to fire hazards.

360-Degree Nozzle

This is useful in homes when you want to direct mist produces to a specific position, and since they aren’t whole-house humidifiers, you would most likely do that more often than none, hence having a humidifier with this feature would make for a better user experience.

My Final Verdict: Picking the Best Humidifier without Filter

My recommendation on the best filterless humidifier for you is actually the LEVOIT Ultrasonic Smart Humidifier for large rooms, mainly due to its ability to serve rooms of large sizes for a device that is small. It also possesses digital and automated features that make using the unit pretty convenient, while its compatibility with essential oils makes it worth the buy.

On the other hand, the Everlasting Comfort humidifier is also a good choice, being able to run for a really long time and possessing a 360–degree nozzle with an auto-shutoff function, to mention a few. It can also serve rooms of large sizes.

And if you want a portable and small unit with a cool mist feature with aromatherapy, I recommend scrolling through my picks to find the device suitable for your needs.

Related Posts:

• Best Humidifier for dry mouth
• Boneco U200 reviews
• Boneco U350 review
• Aprillaire 800 reviews
• Best Humidifier for desert climate
• Best Humidifier for croup
• Best Humidifiers for asthma and allergies

This is a humidifier with catchy looks, as the overall transparent water tank gets much of the attention, while the front side carries the digital displays and buttons, acts as a human-machine interface, for easy communication and control.

Feelings After Using the Product

The digital display shows the reading of the immediate humidity level in the atmosphere at every point in time. Its water tank is built with a capacity of up to 6 liters, which is pretty large, affording the unit a runtime of up to 60 hours at the lowest mist output rate.

Another reason why I liked this humidifier is due to the fact that it is capable of detecting plants nearby and adjusting humidity to their level. 

The humidistat in the device takes the measurements of humidity and automatically adjusts the level. So, I could choose a set humidity level in which I wanted the unit to run.

Another thing that I found particularly convenient is the app. I could remotely control the humidifier without forcing myself to pause from work (especially when you’re in the middle of a meeting).

While operating, the noise level is really low, too. The humidifier is an ultrasonic type, and it is also compatible with aromatherapy. All I needed to do was to lift the cap and add a few droplets of oil – that simple.

I tested the humidifier in the living room, which is quite spacy. Glad to say the humidifier performed well, and I can surely say the device can serve any large-sized room or office. 

Common Problems and How to Deal with Them

During my experiment with the device, there was one problem that nobody can really avoid – cleaning. I’ve tested aromatherapy and night modes, and throughout the whole time, I used either purified or distilled water as suggested by the manufacturer. 

I had to clean the humidifier only once a month – however, if you plan on using regular water, you may need to clean the device more often. 

Key Features

• Transparent water tank
• Digital display with sensitive touch buttons
• Sleep mode
• Aromatherapy
• Plant health

Basic Parameters 

My Rating: 5/5

This vaporizer–type cool mist humidifier has been specially built to counter the effects of low moisture problems alongside its ability to combat allergies, sinuses, and cough.

Feelings After Using the Product

A larger portion of the unit’s body constitutes the water tank, which makes the tank really large with about 6 liters in capacity, therefore giving the device enough backup to run for up to 6 days before a refill is needed. The bottom side, though, is where you would find the controls, as it features the old system but is easy to use an analog knob, whereby it allows the user to vary several preferences according to their choice.

The mist output rate of this unit is pretty high, averaging up to 270ml/hr. I found it pretty impressive. The device also has enough capacity to increase or maintain the humidity level in the environment it is placed in. 

My living room was once again the testing room where I placed the humidifier. Just like LEVOIT, Everlasting Comfort did a pretty good job. So, this could be your second option for large-sized rooms. 

The humidifier performed well without the use of a filter which obviously saved me the extra cash spent on filter replacements and maintenance.

Using the device was pretty straightforward with the controls. Refilling the tank was as simple as it could be. The opening at the top is exactly where I poured water into the tank. As with any humidifier in my review, I only use distilled or purified water. 

When refilling, I would suggest using a towel to cover the bottom part in order to avoid condensation during the process of the refill.

The mist output nozzle at the top is designed with a 360–degree rotational capacity, hence is able to point out mist at different locations in the home. 

It also supports aromatherapy, so my fragrance oil came in handy here, too. The nice smell and quiet operation were very calming. I ran it a few times in the late evening and let the device automatically turn off as soon as all the water is vaporized. 

Common Problems and How to Deal with Them

Apart from once-a-month cleaning, I would recommend being a bit careful when filling up the tank. Once full, it becomes quite heavy to carry around. 

Key Features

• Aromatherapy
• Night light
• Large water tank
• Auto shut-off feature

Basic Parameters 

My Rating: 5/5

3) Crane Ultrasonic Cool Mist Humidifier

Special features: award-winning design, item dimensions: 8.6 x 13.4 x 8.6, item weight: 4.5 pounds.

Well known for its award-winning design and ability to effectively increase the moisture content in the atmosphere, this crane ultrasonic humidifier helps in good night sleep by relieving cough, cold, and flu symptoms.

Feelings After Using the Product

The teardrop design of this device is a real beauty to behold, with curves around the sides, slanting to a pinpoint top side where the 360–degree mist nozzle exists, which gives the user the option of deciding the mist direction.

Like all other filters on my list, this unit is filter-free, hence an assured reduction in operating costs since you wouldn’t have to purchase any replacements, alongside an easier maintenance schedule. 

The unit has been designed to serve rooms of really large sizes, up to 500 sqft, and considering the size of this unit, it is a pretty impressive feat. This time, my living room was too big for the humidifier, so I placed it in my bedroom. And unlike other devices in my list, this one operated exceptionally silently. I set it at night with some fragrance oil and a soothing nightlight to help me sleep. 

When it comes to learning how to use the device, there is an analog control knob. It may look simple and basic with ON/OFF buttons and humidity control, but the price was right, too. 

A major portion of the water tank is transparent, doubling as both a fine design and an easy way to help monitor the water tank level. With a 1-gallon capacity, the unit can run for up to 24hrs without needing a refill.

The device overall is easy to clean and maintain and has the auto-shutoff feature for protection in case the tank runs dry, while refilling the water tank isn’t much of a fuss. Yet again, my reminder to everyone wanting to buy any humidifier without a filter is to use distilled water only in order to avoid problems of white dust.

Common Problems and How to Deal with Them

Since I placed the humidifier in my bedroom, I realized that in winter it could get a bit cold with the device running. So far, this is the only downside of the device – not having a warm mist feature. 

Key Features

• Award-winning design
• 360-degree mist lid
• Night light 
• Easy to use

Basic Parameters 

My Rating: 4.8/5

4) Honeywell HUL535b Cool Mist Humidifier      

This is a compact–sized humidifier with a really small footprint and wouldn’t take up space around the home. It is suitable to be used as a tabletop type, doing a good job of increasing the moisture content level of the atmosphere. Although it can run for up to 24 hours on the lowest setting, the water tank is pretty small compared to most, and on the highest setting, it would last only about a few hours.

Feelings After Using the Product

The mist production system of this humidifier supports only cool mists, which isn’t exactly the best out there and could be a real drag during winter periods.

It features a good design, though, having similarities with the crane type, with a transparent water tank stacked between the bottom control section and a top cover containing the mist nozzle. 

The controls are varied by using an analog knob for choosing between different speeds, while the water level can be easily monitored by the user through the transparent tank.

Basically, the Honeywell humidifier is very similar to the Crane one in its design and even controls. 

An auto-shutoff feature is also present for times when the water in the tank runs out, putting off the device with immediate effect in order to avoid overheating and hence fire hazards and when it is time to actually refill the tank. 

I didn’t have any problem filling up the tank. The humidifier has a wide opening at the top side where I could easily pour water in and attach it back to the other part of the unit.

It should only be used with distilled water due to the absence of a filter and being an ultrasonic type; it is most likely to produce fine dust when used with hard water.

Cleaning overall was easy to carry out, too, mainly due to the opening at the top and its design that can be taken apart quickly,.

Common Problems and How to Deal with Them

Honeywell seems to be a budget version of the Crane humidifier but no less reliable. The Honeywell device lacks nightlight as well as aromatherapy. Apart from that, if these features aren’t of priority, you will surely enjoy the humidifier. 

Key Features

• Auto shut-off when empty 
• Directional mist outlet 

Basic Parameters 

My Rating: 4.5/5

5) Vicks Mini Filter Free Cool Mist Humidifier

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them

Its size is probably the biggest problem in this device. Expect to refill it frequently and keep it on charge more often than you can use it. On the positive side, it is portable, and you can always use it whenever you work or study, 

Key Features

• Easy to use 
• Simple design 
• Auto shut-off
• Vapo Pads available for soothing vapors 

Basic Parameters 

My Rating: 4.2/5

6) Pureguardian H940 Ultrasonic Cool Mist Humidifier

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Factors to Consider When Choosing the Best Filter–Free Humidifiers

Room Capacity

The area of the room that the unit can serve should always be taken into consideration, as smaller units would always lead to poorer performances. Therefore, I have included this very important detail in each review I’ve written here. 

Auto Shutoff

Since filterless humidifiers are mostly small and have smaller tanks compared to regular whole-house humidifiers, the water in the tank would certainly run dry faster. Hence the need for the auto-shutoff feature, which turns the unit off to avoid unnecessary power consumption and overheating that could lead to fire hazards.

360-Degree Nozzle

This is useful in homes when you want to direct mist produces to a specific position, and since they aren’t whole-house humidifiers, you would most likely do that more often than none, hence having a humidifier with this feature would make for a better user experience.

My Final Verdict: Picking the Best Humidifier without Filter

My recommendation on the best filterless humidifier for you is actually the LEVOIT Ultrasonic Smart Humidifier for large rooms, mainly due to its ability to serve rooms of large sizes for a device that is small. It also possesses digital and automated features that make using the unit pretty convenient, while its compatibility with essential oils makes it worth the buy.

On the other hand, the Everlasting Comfort humidifier is also a good choice, being able to run for a really long time and possessing a 360–degree nozzle with an auto-shutoff function, to mention a few. It can also serve rooms of large sizes.

And if you want a portable and small unit with a cool mist feature with aromatherapy, I recommend scrolling through my picks to find the device suitable for your needs.

Related Posts:

• Best Humidifier for dry mouth
• Boneco U200 reviews
• Boneco U350 review
• Aprillaire 800 reviews
• Best Humidifier for desert climate
• Best Humidifier for croup
• Best Humidifiers for asthma and allergies

This is a compact–sized humidifier with a really small footprint and wouldn’t take up space around the home. It is suitable to be used as a tabletop type, doing a good job of increasing the moisture content level of the atmosphere. Although it can run for up to 24 hours on the lowest setting, the water tank is pretty small compared to most, and on the highest setting, it would last only about a few hours.

Feelings After Using the Product

The mist production system of this humidifier supports only cool mists, which isn’t exactly the best out there and could be a real drag during winter periods.

It features a good design, though, having similarities with the crane type, with a transparent water tank stacked between the bottom control section and a top cover containing the mist nozzle. 

The controls are varied by using an analog knob for choosing between different speeds, while the water level can be easily monitored by the user through the transparent tank.

Basically, the Honeywell humidifier is very similar to the Crane one in its design and even controls. 

An auto-shutoff feature is also present for times when the water in the tank runs out, putting off the device with immediate effect in order to avoid overheating and hence fire hazards and when it is time to actually refill the tank. 

I didn’t have any problem filling up the tank. The humidifier has a wide opening at the top side where I could easily pour water in and attach it back to the other part of the unit.

It should only be used with distilled water due to the absence of a filter and being an ultrasonic type; it is most likely to produce fine dust when used with hard water.

Cleaning overall was easy to carry out, too, mainly due to the opening at the top and its design that can be taken apart quickly,.

Common Problems and How to Deal with Them

Honeywell seems to be a budget version of the Crane humidifier but no less reliable. The Honeywell device lacks nightlight as well as aromatherapy. Apart from that, if these features aren’t of priority, you will surely enjoy the humidifier. 

Key Features

• Auto shut-off when empty 
• Directional mist outlet 

Basic Parameters 

My Rating: 4.5/5

5) Vicks Mini Filter Free Cool Mist Humidifier

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them

Its size is probably the biggest problem in this device. Expect to refill it frequently and keep it on charge more often than you can use it. On the positive side, it is portable, and you can always use it whenever you work or study, 

Key Features

• Easy to use 
• Simple design 
• Auto shut-off
• Vapo Pads available for soothing vapors 

Basic Parameters 

My Rating: 4.2/5

6) Pureguardian H940 Ultrasonic Cool Mist Humidifier

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Factors to Consider When Choosing the Best Filter–Free Humidifiers

Room Capacity

The area of the room that the unit can serve should always be taken into consideration, as smaller units would always lead to poorer performances. Therefore, I have included this very important detail in each review I’ve written here. 

Auto Shutoff

Since filterless humidifiers are mostly small and have smaller tanks compared to regular whole-house humidifiers, the water in the tank would certainly run dry faster. Hence the need for the auto-shutoff feature, which turns the unit off to avoid unnecessary power consumption and overheating that could lead to fire hazards.

360-Degree Nozzle

This is useful in homes when you want to direct mist produces to a specific position, and since they aren’t whole-house humidifiers, you would most likely do that more often than none, hence having a humidifier with this feature would make for a better user experience.

My Final Verdict: Picking the Best Humidifier without Filter

My recommendation on the best filterless humidifier for you is actually the LEVOIT Ultrasonic Smart Humidifier for large rooms, mainly due to its ability to serve rooms of large sizes for a device that is small. It also possesses digital and automated features that make using the unit pretty convenient, while its compatibility with essential oils makes it worth the buy.

On the other hand, the Everlasting Comfort humidifier is also a good choice, being able to run for a really long time and possessing a 360–degree nozzle with an auto-shutoff function, to mention a few. It can also serve rooms of large sizes.

And if you want a portable and small unit with a cool mist feature with aromatherapy, I recommend scrolling through my picks to find the device suitable for your needs.

Related Posts:

• Best Humidifier for dry mouth
• Boneco U200 reviews
• Boneco U350 review
• Aprillaire 800 reviews
• Best Humidifier for desert climate
• Best Humidifier for croup
• Best Humidifiers for asthma and allergies

This is a humidifier with catchy looks, as the overall transparent water tank gets much of the attention, while the front side carries the digital displays and buttons, acts as a human-machine interface, for easy communication and control.

Feelings After Using the Product

The digital display shows the reading of the immediate humidity level in the atmosphere at every point in time. Its water tank is built with a capacity of up to 6 liters, which is pretty large, affording the unit a runtime of up to 60 hours at the lowest mist output rate.

Another reason why I liked this humidifier is due to the fact that it is capable of detecting plants nearby and adjusting humidity to their level. 

The humidistat in the device takes the measurements of humidity and automatically adjusts the level. So, I could choose a set humidity level in which I wanted the unit to run.

Another thing that I found particularly convenient is the app. I could remotely control the humidifier without forcing myself to pause from work (especially when you’re in the middle of a meeting).

While operating, the noise level is really low, too. The humidifier is an ultrasonic type, and it is also compatible with aromatherapy. All I needed to do was to lift the cap and add a few droplets of oil – that simple.

I tested the humidifier in the living room, which is quite spacy. Glad to say the humidifier performed well, and I can surely say the device can serve any large-sized room or office. 

Common Problems and How to Deal with Them

During my experiment with the device, there was one problem that nobody can really avoid – cleaning. I’ve tested aromatherapy and night modes, and throughout the whole time, I used either purified or distilled water as suggested by the manufacturer. 

I had to clean the humidifier only once a month – however, if you plan on using regular water, you may need to clean the device more often. 

Key Features

• Transparent water tank
• Digital display with sensitive touch buttons
• Sleep mode
• Aromatherapy
• Plant health

Basic Parameters 

My Rating: 5/5

This vaporizer–type cool mist humidifier has been specially built to counter the effects of low moisture problems alongside its ability to combat allergies, sinuses, and cough.

Feelings After Using the Product

A larger portion of the unit’s body constitutes the water tank, which makes the tank really large with about 6 liters in capacity, therefore giving the device enough backup to run for up to 6 days before a refill is needed. The bottom side, though, is where you would find the controls, as it features the old system but is easy to use an analog knob, whereby it allows the user to vary several preferences according to their choice.

The mist output rate of this unit is pretty high, averaging up to 270ml/hr. I found it pretty impressive. The device also has enough capacity to increase or maintain the humidity level in the environment it is placed in. 

My living room was once again the testing room where I placed the humidifier. Just like LEVOIT, Everlasting Comfort did a pretty good job. So, this could be your second option for large-sized rooms. 

The humidifier performed well without the use of a filter which obviously saved me the extra cash spent on filter replacements and maintenance.

Using the device was pretty straightforward with the controls. Refilling the tank was as simple as it could be. The opening at the top is exactly where I poured water into the tank. As with any humidifier in my review, I only use distilled or purified water. 

When refilling, I would suggest using a towel to cover the bottom part in order to avoid condensation during the process of the refill.

The mist output nozzle at the top is designed with a 360–degree rotational capacity, hence is able to point out mist at different locations in the home. 

It also supports aromatherapy, so my fragrance oil came in handy here, too. The nice smell and quiet operation were very calming. I ran it a few times in the late evening and let the device automatically turn off as soon as all the water is vaporized. 

Common Problems and How to Deal with Them

Apart from once-a-month cleaning, I would recommend being a bit careful when filling up the tank. Once full, it becomes quite heavy to carry around. 

Key Features

• Aromatherapy
• Night light
• Large water tank
• Auto shut-off feature

Basic Parameters 

My Rating: 5/5

3) Crane Ultrasonic Cool Mist Humidifier

Special features: award-winning design, item dimensions: 8.6 x 13.4 x 8.6, item weight: 4.5 pounds.

Well known for its award-winning design and ability to effectively increase the moisture content in the atmosphere, this crane ultrasonic humidifier helps in good night sleep by relieving cough, cold, and flu symptoms.

Feelings After Using the Product

The teardrop design of this device is a real beauty to behold, with curves around the sides, slanting to a pinpoint top side where the 360–degree mist nozzle exists, which gives the user the option of deciding the mist direction.

Like all other filters on my list, this unit is filter-free, hence an assured reduction in operating costs since you wouldn’t have to purchase any replacements, alongside an easier maintenance schedule. 

The unit has been designed to serve rooms of really large sizes, up to 500 sqft, and considering the size of this unit, it is a pretty impressive feat. This time, my living room was too big for the humidifier, so I placed it in my bedroom. And unlike other devices in my list, this one operated exceptionally silently. I set it at night with some fragrance oil and a soothing nightlight to help me sleep. 

When it comes to learning how to use the device, there is an analog control knob. It may look simple and basic with ON/OFF buttons and humidity control, but the price was right, too. 

A major portion of the water tank is transparent, doubling as both a fine design and an easy way to help monitor the water tank level. With a 1-gallon capacity, the unit can run for up to 24hrs without needing a refill.

The device overall is easy to clean and maintain and has the auto-shutoff feature for protection in case the tank runs dry, while refilling the water tank isn’t much of a fuss. Yet again, my reminder to everyone wanting to buy any humidifier without a filter is to use distilled water only in order to avoid problems of white dust.

Common Problems and How to Deal with Them

Since I placed the humidifier in my bedroom, I realized that in winter it could get a bit cold with the device running. So far, this is the only downside of the device – not having a warm mist feature. 

Key Features

• Award-winning design
• 360-degree mist lid
• Night light 
• Easy to use

Basic Parameters 

My Rating: 4.8/5

4) Honeywell HUL535b Cool Mist Humidifier      

This is a compact–sized humidifier with a really small footprint and wouldn’t take up space around the home. It is suitable to be used as a tabletop type, doing a good job of increasing the moisture content level of the atmosphere. Although it can run for up to 24 hours on the lowest setting, the water tank is pretty small compared to most, and on the highest setting, it would last only about a few hours.

Feelings After Using the Product

The mist production system of this humidifier supports only cool mists, which isn’t exactly the best out there and could be a real drag during winter periods.

It features a good design, though, having similarities with the crane type, with a transparent water tank stacked between the bottom control section and a top cover containing the mist nozzle. 

The controls are varied by using an analog knob for choosing between different speeds, while the water level can be easily monitored by the user through the transparent tank.

Basically, the Honeywell humidifier is very similar to the Crane one in its design and even controls. 

An auto-shutoff feature is also present for times when the water in the tank runs out, putting off the device with immediate effect in order to avoid overheating and hence fire hazards and when it is time to actually refill the tank. 

I didn’t have any problem filling up the tank. The humidifier has a wide opening at the top side where I could easily pour water in and attach it back to the other part of the unit.

It should only be used with distilled water due to the absence of a filter and being an ultrasonic type; it is most likely to produce fine dust when used with hard water.

Cleaning overall was easy to carry out, too, mainly due to the opening at the top and its design that can be taken apart quickly,.

Common Problems and How to Deal with Them

Honeywell seems to be a budget version of the Crane humidifier but no less reliable. The Honeywell device lacks nightlight as well as aromatherapy. Apart from that, if these features aren’t of priority, you will surely enjoy the humidifier. 

Key Features

• Auto shut-off when empty 
• Directional mist outlet 

Basic Parameters 

My Rating: 4.5/5

5) Vicks Mini Filter Free Cool Mist Humidifier

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them

Its size is probably the biggest problem in this device. Expect to refill it frequently and keep it on charge more often than you can use it. On the positive side, it is portable, and you can always use it whenever you work or study, 

Key Features

• Easy to use 
• Simple design 
• Auto shut-off
• Vapo Pads available for soothing vapors 

Basic Parameters 

My Rating: 4.2/5

6) Pureguardian H940 Ultrasonic Cool Mist Humidifier

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Factors to Consider When Choosing the Best Filter–Free Humidifiers

Room Capacity

The area of the room that the unit can serve should always be taken into consideration, as smaller units would always lead to poorer performances. Therefore, I have included this very important detail in each review I’ve written here. 

Auto Shutoff

Since filterless humidifiers are mostly small and have smaller tanks compared to regular whole-house humidifiers, the water in the tank would certainly run dry faster. Hence the need for the auto-shutoff feature, which turns the unit off to avoid unnecessary power consumption and overheating that could lead to fire hazards.

360-Degree Nozzle

This is useful in homes when you want to direct mist produces to a specific position, and since they aren’t whole-house humidifiers, you would most likely do that more often than none, hence having a humidifier with this feature would make for a better user experience.

My Final Verdict: Picking the Best Humidifier without Filter

My recommendation on the best filterless humidifier for you is actually the LEVOIT Ultrasonic Smart Humidifier for large rooms, mainly due to its ability to serve rooms of large sizes for a device that is small. It also possesses digital and automated features that make using the unit pretty convenient, while its compatibility with essential oils makes it worth the buy.

On the other hand, the Everlasting Comfort humidifier is also a good choice, being able to run for a really long time and possessing a 360–degree nozzle with an auto-shutoff function, to mention a few. It can also serve rooms of large sizes.

And if you want a portable and small unit with a cool mist feature with aromatherapy, I recommend scrolling through my picks to find the device suitable for your needs.

Related Posts:

• Best Humidifier for dry mouth
• Boneco U200 reviews
• Boneco U350 review
• Aprillaire 800 reviews
• Best Humidifier for desert climate
• Best Humidifier for croup
• Best Humidifiers for asthma and allergies

This vaporizer–type cool mist humidifier has been specially built to counter the effects of low moisture problems alongside its ability to combat allergies, sinuses, and cough.

Feelings After Using the Product

A larger portion of the unit’s body constitutes the water tank, which makes the tank really large with about 6 liters in capacity, therefore giving the device enough backup to run for up to 6 days before a refill is needed. The bottom side, though, is where you would find the controls, as it features the old system but is easy to use an analog knob, whereby it allows the user to vary several preferences according to their choice.

The mist output rate of this unit is pretty high, averaging up to 270ml/hr. I found it pretty impressive. The device also has enough capacity to increase or maintain the humidity level in the environment it is placed in. 

My living room was once again the testing room where I placed the humidifier. Just like LEVOIT, Everlasting Comfort did a pretty good job. So, this could be your second option for large-sized rooms. 

The humidifier performed well without the use of a filter which obviously saved me the extra cash spent on filter replacements and maintenance.

Using the device was pretty straightforward with the controls. Refilling the tank was as simple as it could be. The opening at the top is exactly where I poured water into the tank. As with any humidifier in my review, I only use distilled or purified water. 

When refilling, I would suggest using a towel to cover the bottom part in order to avoid condensation during the process of the refill.

The mist output nozzle at the top is designed with a 360–degree rotational capacity, hence is able to point out mist at different locations in the home. 

It also supports aromatherapy, so my fragrance oil came in handy here, too. The nice smell and quiet operation were very calming. I ran it a few times in the late evening and let the device automatically turn off as soon as all the water is vaporized. 

Common Problems and How to Deal with Them

Apart from once-a-month cleaning, I would recommend being a bit careful when filling up the tank. Once full, it becomes quite heavy to carry around. 

Key Features

• Aromatherapy
• Night light
• Large water tank
• Auto shut-off feature

Basic Parameters 

My Rating: 5/5

Well known for its award-winning design and ability to effectively increase the moisture content in the atmosphere, this crane ultrasonic humidifier helps in good night sleep by relieving cough, cold, and flu symptoms.

Feelings After Using the Product

The teardrop design of this device is a real beauty to behold, with curves around the sides, slanting to a pinpoint top side where the 360–degree mist nozzle exists, which gives the user the option of deciding the mist direction.

Like all other filters on my list, this unit is filter-free, hence an assured reduction in operating costs since you wouldn’t have to purchase any replacements, alongside an easier maintenance schedule. 

The unit has been designed to serve rooms of really large sizes, up to 500 sqft, and considering the size of this unit, it is a pretty impressive feat. This time, my living room was too big for the humidifier, so I placed it in my bedroom. And unlike other devices in my list, this one operated exceptionally silently. I set it at night with some fragrance oil and a soothing nightlight to help me sleep. 

When it comes to learning how to use the device, there is an analog control knob. It may look simple and basic with ON/OFF buttons and humidity control, but the price was right, too. 

A major portion of the water tank is transparent, doubling as both a fine design and an easy way to help monitor the water tank level. With a 1-gallon capacity, the unit can run for up to 24hrs without needing a refill.

The device overall is easy to clean and maintain and has the auto-shutoff feature for protection in case the tank runs dry, while refilling the water tank isn’t much of a fuss. Yet again, my reminder to everyone wanting to buy any humidifier without a filter is to use distilled water only in order to avoid problems of white dust.

Common Problems and How to Deal with Them

Since I placed the humidifier in my bedroom, I realized that in winter it could get a bit cold with the device running. So far, this is the only downside of the device – not having a warm mist feature. 

Key Features

• Award-winning design
• 360-degree mist lid
• Night light 
• Easy to use

Basic Parameters 

My Rating: 4.8/5

4) Honeywell HUL535b Cool Mist Humidifier      

This is a compact–sized humidifier with a really small footprint and wouldn’t take up space around the home. It is suitable to be used as a tabletop type, doing a good job of increasing the moisture content level of the atmosphere. Although it can run for up to 24 hours on the lowest setting, the water tank is pretty small compared to most, and on the highest setting, it would last only about a few hours.

Feelings After Using the Product

The mist production system of this humidifier supports only cool mists, which isn’t exactly the best out there and could be a real drag during winter periods.

It features a good design, though, having similarities with the crane type, with a transparent water tank stacked between the bottom control section and a top cover containing the mist nozzle. 

The controls are varied by using an analog knob for choosing between different speeds, while the water level can be easily monitored by the user through the transparent tank.

Basically, the Honeywell humidifier is very similar to the Crane one in its design and even controls. 

An auto-shutoff feature is also present for times when the water in the tank runs out, putting off the device with immediate effect in order to avoid overheating and hence fire hazards and when it is time to actually refill the tank. 

I didn’t have any problem filling up the tank. The humidifier has a wide opening at the top side where I could easily pour water in and attach it back to the other part of the unit.

It should only be used with distilled water due to the absence of a filter and being an ultrasonic type; it is most likely to produce fine dust when used with hard water.

Cleaning overall was easy to carry out, too, mainly due to the opening at the top and its design that can be taken apart quickly,.

Common Problems and How to Deal with Them

Honeywell seems to be a budget version of the Crane humidifier but no less reliable. The Honeywell device lacks nightlight as well as aromatherapy. Apart from that, if these features aren’t of priority, you will surely enjoy the humidifier. 

Key Features

• Auto shut-off when empty 
• Directional mist outlet 

Basic Parameters 

My Rating: 4.5/5

5) Vicks Mini Filter Free Cool Mist Humidifier

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them

Its size is probably the biggest problem in this device. Expect to refill it frequently and keep it on charge more often than you can use it. On the positive side, it is portable, and you can always use it whenever you work or study, 

Key Features

• Easy to use 
• Simple design 
• Auto shut-off
• Vapo Pads available for soothing vapors 

Basic Parameters 

My Rating: 4.2/5

6) Pureguardian H940 Ultrasonic Cool Mist Humidifier

Finally on my list is the PureGuardian H940, which is a pretty okay device with good looks and really portable enough to serve as a desktop unit, without taking up much space around the home.

Feelings After Using the Product

It features a bottle–like looking shape, with just a single button down below for powering the unit, while the top side accommodates a transparent water tank with the mist outlet at the top.

The water tank in itself is very small in capacity (just only 0.5 gallons). It isn’t a humidifier for small rooms even, but rather to place nearby on the desk or by the bed. So, if you’re looking for a portable and compact device – this is it! 

Yes, it only holds 0.5 gallons of water, but the device can run up to 30 hours. This is truly impressive, but you will have to refill the water frequently. 

The water tank, though, comes with a specially treated silver clean protection surface, which fights the growth of microorganisms like molds and mildew on the tank’s surface, hence reducing the amount and frequency of maintenance that would be carried out over time. 

For soothing relief, there is an option of using a night light, depending on the preference of the user, and it can be turned off.

Pertaining to compatibility with hard water, the unit should only be used with distilled water to avoid the problems of white dust, but they also exist an option to purchase a decalcification cartridge which works to remove impurities like minerals in hard water, hence making it suitable to be used with the unit.

Like most humidifiers on my list, this product also contains the auto-shutoff feature, which turns off the device in a case of an empty water tank, after which the water refill indicator light comes on to alert the user.

The unit, in all, has a pretty impressive moisture output rate, being able to push out up to 6 liters of moisture per day, and it is pretty easy to use, with less cleaning, unlike most other types. 

Common Problems and How to Deal with Them

A major letdown of this device is its suitability for only small-sized rooms. If you’re searching for a humidifier for a large room, I recommend you have a look at my top three picks. 

Key Features

• Auto shut-off
• Nightlight
• Simple to use

Basic Parameters 

My Rating: 4/5

Factors to Consider When Choosing the Best Filter–Free Humidifiers

Room Capacity

The area of the room that the unit can serve should always be taken into consideration, as smaller units would always lead to poorer performances. Therefore, I have included this very important detail in each review I’ve written here. 

Auto Shutoff

Since filterless humidifiers are mostly small and have smaller tanks compared to regular whole-house humidifiers, the water in the tank would certainly run dry faster. Hence the need for the auto-shutoff feature, which turns the unit off to avoid unnecessary power consumption and overheating that could lead to fire hazards.

360-Degree Nozzle

This is useful in homes when you want to direct mist produces to a specific position, and since they aren’t whole-house humidifiers, you would most likely do that more often than none, hence having a humidifier with this feature would make for a better user experience.

My Final Verdict: Picking the Best Humidifier without Filter

My recommendation on the best filterless humidifier for you is actually the LEVOIT Ultrasonic Smart Humidifier for large rooms, mainly due to its ability to serve rooms of large sizes for a device that is small. It also possesses digital and automated features that make using the unit pretty convenient, while its compatibility with essential oils makes it worth the buy.

On the other hand, the Everlasting Comfort humidifier is also a good choice, being able to run for a really long time and possessing a 360–degree nozzle with an auto-shutoff function, to mention a few. It can also serve rooms of large sizes.

And if you want a portable and small unit with a cool mist feature with aromatherapy, I recommend scrolling through my picks to find the device suitable for your needs.

Related Posts:

• Best Humidifier for dry mouth
• Boneco U200 reviews
• Boneco U350 review
• Aprillaire 800 reviews
• Best Humidifier for desert climate
• Best Humidifier for croup
• Best Humidifiers for asthma and allergies

This is a humidifier with catchy looks, as the overall transparent water tank gets much of the attention, while the front side carries the digital displays and buttons, acts as a human-machine interface, for easy communication and control.

Feelings After Using the Product

The digital display shows the reading of the immediate humidity level in the atmosphere at every point in time. Its water tank is built with a capacity of up to 6 liters, which is pretty large, affording the unit a runtime of up to 60 hours at the lowest mist output rate.

Another reason why I liked this humidifier is due to the fact that it is capable of detecting plants nearby and adjusting humidity to their level. 

The humidistat in the device takes the measurements of humidity and automatically adjusts the level. So, I could choose a set humidity level in which I wanted the unit to run.

Another thing that I found particularly convenient is the app. I could remotely control the humidifier without forcing myself to pause from work (especially when you’re in the middle of a meeting).

While operating, the noise level is really low, too. The humidifier is an ultrasonic type, and it is also compatible with aromatherapy. All I needed to do was to lift the cap and add a few droplets of oil – that simple.

I tested the humidifier in the living room, which is quite spacy. Glad to say the humidifier performed well, and I can surely say the device can serve any large-sized room or office. 

Common Problems and How to Deal with Them

During my experiment with the device, there was one problem that nobody can really avoid – cleaning. I’ve tested aromatherapy and night modes, and throughout the whole time, I used either purified or distilled water as suggested by the manufacturer. 

I had to clean the humidifier only once a month – however, if you plan on using regular water, you may need to clean the device more often. 

Key Features

• Transparent water tank
• Digital display with sensitive touch buttons
• Sleep mode
• Aromatherapy
• Plant health

Basic Parameters 

My Rating: 5/5

This vaporizer–type cool mist humidifier has been specially built to counter the effects of low moisture problems alongside its ability to combat allergies, sinuses, and cough.

Feelings After Using the Product

A larger portion of the unit’s body constitutes the water tank, which makes the tank really large with about 6 liters in capacity, therefore giving the device enough backup to run for up to 6 days before a refill is needed. The bottom side, though, is where you would find the controls, as it features the old system but is easy to use an analog knob, whereby it allows the user to vary several preferences according to their choice.

The mist output rate of this unit is pretty high, averaging up to 270ml/hr. I found it pretty impressive. The device also has enough capacity to increase or maintain the humidity level in the environment it is placed in. 

My living room was once again the testing room where I placed the humidifier. Just like LEVOIT, Everlasting Comfort did a pretty good job. So, this could be your second option for large-sized rooms. 

The humidifier performed well without the use of a filter which obviously saved me the extra cash spent on filter replacements and maintenance.

Using the device was pretty straightforward with the controls. Refilling the tank was as simple as it could be. The opening at the top is exactly where I poured water into the tank. As with any humidifier in my review, I only use distilled or purified water. 

When refilling, I would suggest using a towel to cover the bottom part in order to avoid condensation during the process of the refill.

The mist output nozzle at the top is designed with a 360–degree rotational capacity, hence is able to point out mist at different locations in the home. 

It also supports aromatherapy, so my fragrance oil came in handy here, too. The nice smell and quiet operation were very calming. I ran it a few times in the late evening and let the device automatically turn off as soon as all the water is vaporized. 

Common Problems and How to Deal with Them

Apart from once-a-month cleaning, I would recommend being a bit careful when filling up the tank. Once full, it becomes quite heavy to carry around. 

Key Features

• Aromatherapy
• Night light
• Large water tank
• Auto shut-off feature

Basic Parameters 

My Rating: 5/5

3) Crane Ultrasonic Cool Mist Humidifier

Special features: award-winning design, item dimensions: 8.6 x 13.4 x 8.6, item weight: 4.5 pounds.

Well known for its award-winning design and ability to effectively increase the moisture content in the atmosphere, this crane ultrasonic humidifier helps in good night sleep by relieving cough, cold, and flu symptoms.

Feelings After Using the Product

The teardrop design of this device is a real beauty to behold, with curves around the sides, slanting to a pinpoint top side where the 360–degree mist nozzle exists, which gives the user the option of deciding the mist direction.

Like all other filters on my list, this unit is filter-free, hence an assured reduction in operating costs since you wouldn’t have to purchase any replacements, alongside an easier maintenance schedule. 

The unit has been designed to serve rooms of really large sizes, up to 500 sqft, and considering the size of this unit, it is a pretty impressive feat. This time, my living room was too big for the humidifier, so I placed it in my bedroom. And unlike other devices in my list, this one operated exceptionally silently. I set it at night with some fragrance oil and a soothing nightlight to help me sleep. 

When it comes to learning how to use the device, there is an analog control knob. It may look simple and basic with ON/OFF buttons and humidity control, but the price was right, too. 

A major portion of the water tank is transparent, doubling as both a fine design and an easy way to help monitor the water tank level. With a 1-gallon capacity, the unit can run for up to 24hrs without needing a refill.

The device overall is easy to clean and maintain and has the auto-shutoff feature for protection in case the tank runs dry, while refilling the water tank isn’t much of a fuss. Yet again, my reminder to everyone wanting to buy any humidifier without a filter is to use distilled water only in order to avoid problems of white dust.

Common Problems and How to Deal with Them

Since I placed the humidifier in my bedroom, I realized that in winter it could get a bit cold with the device running. So far, this is the only downside of the device – not having a warm mist feature. 

Key Features

• Award-winning design
• 360-degree mist lid
• Night light 
• Easy to use

Basic Parameters 

My Rating: 4.8/5

4) Honeywell HUL535b Cool Mist Humidifier      

This is a compact–sized humidifier with a really small footprint and wouldn’t take up space around the home. It is suitable to be used as a tabletop type, doing a good job of increasing the moisture content level of the atmosphere. Although it can run for up to 24 hours on the lowest setting, the water tank is pretty small compared to most, and on the highest setting, it would last only about a few hours.

Feelings After Using the Product

The mist production system of this humidifier supports only cool mists, which isn’t exactly the best out there and could be a real drag during winter periods.

It features a good design, though, having similarities with the crane type, with a transparent water tank stacked between the bottom control section and a top cover containing the mist nozzle. 

The controls are varied by using an analog knob for choosing between different speeds, while the water level can be easily monitored by the user through the transparent tank.

Basically, the Honeywell humidifier is very similar to the Crane one in its design and even controls. 

An auto-shutoff feature is also present for times when the water in the tank runs out, putting off the device with immediate effect in order to avoid overheating and hence fire hazards and when it is time to actually refill the tank. 

I didn’t have any problem filling up the tank. The humidifier has a wide opening at the top side where I could easily pour water in and attach it back to the other part of the unit.

It should only be used with distilled water due to the absence of a filter and being an ultrasonic type; it is most likely to produce fine dust when used with hard water.

Cleaning overall was easy to carry out, too, mainly due to the opening at the top and its design that can be taken apart quickly,.

Common Problems and How to Deal with Them

Honeywell seems to be a budget version of the Crane humidifier but no less reliable. The Honeywell device lacks nightlight as well as aromatherapy. Apart from that, if these features aren’t of priority, you will surely enjoy the humidifier. 

Key Features

• Auto shut-off when empty 
• Directional mist outlet 

Basic Parameters 

My Rating: 4.5/5

5) Vicks Mini Filter Free Cool Mist Humidifier

Small and simple to use, this humidifier is a reliable device for a small-sized room. Vicks mini-filter humidifier runs without a filter but instead makes use of Vicks VapoPads, which will be discussed as you go on.

Feelings After Using the Product

The unit carries a similar teardrop design, aside from the fact that the top side isn’t pointy but rather flat and accommodates the mist outlet.

The water tank is very small in capacity, being just about 0.5 gallons in capacity. Although it affords a runtime of up to 20 hours on the lowest setting, that wouldn’t make much of an impact on the atmospheric moisture content level.

The water tank is completely transparent, so it was easy to monitor the water level. Even if you get occupied with important tasks and forget about the device, it automatically shuts off. 

The Vicks humidifier was straightforward to use. I simply adjusted the mist with an analog control knob. 

The device offers just one mist output type in the cool mist and a non-rotatable output nozzle, which doesn’t exactly speak well compared to other units here, while during operation, it can barely be heard due to its very quiet mode.

I’d like to focus more on the additional feature that competitors don’t offer – Vapo Pads. Vapo Pads are actually an equivalent of the regular aromatherapy pads seen in other units. I’ve purchased one pack and frankly enjoyed the cool mist with a fragrant scent. 

In the case of zero water supply from the tank to the unit, the auto-shutoff feature kicks in, effectively turning down the complete operations of the unit to prevent hazards.

Overall, the unit is easy to use, refill, and maintain, although it cannot serve large or medium room sizes. You can place the humidifier next to your bed or desk or take it with you to the office, where it sits nicely next to you. 

It is recommended that you make use of distilled water only in order to avoid white dust problems in the home,

Common Problems and How to Deal with Them