According to our Pureguardian humidifier reviews, we were able to extract that the Guardian technologies are well known for their range of humidifier products released over the years, with a specialty in dealing with stuffiness and dryness in the home or immediate environment where it is used.

They are an Ohio-based manufacturer, and despite being relatively new in the market, they have managed to create a niche for themselves through cutting edge technologies and innovative designs.

This pureguardian ultrasonic humidifier reviews has therefore been written to cover the extent of their quality product. If you are familiar with the germguardian air purifiers, then you have had firsthand experience in seeing the type of quality level of the guardian technologies, as the germguardians itself comes out of their depth.

Well, they also offer an impressive range of ultrasonic humidifiers, which offers a good quality of performance as well as being cost effective. As you read on, you would come across the best pureguardian ultrasonic humidifiers reviews, which consist of our top pick from their range of ultrasonic humidifiers that have performed well in today’s market.

Getting to know the pureguardian family

The pureguardian family bear several ranges of products but only strictly in the ultrasonic humidifier class.

Ultrasonic humidifiers generally make use of a diaphragm that vibrates at an ultrasonic frequency to break water in the unit into to create water droplets, which releases it as a mist into the atmosphere. This mist in large quantity adds to the moisture in the atmosphere, therefore increasing the humidity level.

Ultrasonic humidifiers have a general problem of releasing white dust into the atmosphere alongside the mist been generated, but this can be avoided through several means, all of which would be unveiled as you read further in this article.

The general goal of the guardian technologies is to provide affordable solutions to everyday household problems like poor indoor air quality and low humidity.

Also Read: Air innovation humidifier reviews

Top 6 Best pureguardian ultrasonic Humidifier review 

1) PureGuardian H8000B 9L Output per Day Ultrasonic Warm and Cool Mist Humidifier

PureGuardian H8000B 9L Output per Day Ultrasonic Warm and Cool Mist Humidifier
Check the price of this product

Spanning about 7.2 x9.8 x 14.5 inches in dimension, this product is of medium size and would take quite an amount of space up in your home although not too much, and with the weight of about 6.17 pounds, we can’t exactly call it the most massive product we have seen.

The H8000B exists among the elite class of pureguardian humidifiers, possessing most of the modern humidifier features that have been developed over the ages.

The relatively large size of this humidifier is as a result of the large capacity of the water tank which is about two gallons, providing mist coverage for up to 120 hours on the lowest setting and when the cool mist is in use. In using the warm mist, it would average almost the same time, though, just falling a little less.

This ultrasonic humidifier is designed with an ultra-quiet technology, allowing the user peace from the quietness of nature while adding moisture to your room, or when you are asleep.

The water tank embedded in the unit is built with a unique silver clean protection surface, that performs efficiently in reducing the potential growth of mold and bacteria on the tanks surface over time.

It also has the option of making using of an extended reach wand which channels the mist to be released at the top level atmosphere where it can better effect a change for more comfort.

With a smart mist sensor, this unit can automatically work to either reduce or increase its mist output, maintaining a balanced humidity level which would be chosen by you. The timer feature possessed by the most digital humidifier is also available, allowing you to choose its working hours depending on your schedule.

To wrap things up about this humidifier, looking at the top side is a digital display interface with electronic touch control, removing the old button style. This display features several options, including a three fan speed setting and night light that would come in handy in darkness.

The unit works well and is designed to serve your large sized rooms (up to 500sqft), with a capacity output of up to 9 liters per day, while being very easy to use and operate giving you an option of choosing either a warm or cool mist.

Though flipping the water tank into the unit after refill could be tricky, the practice would make perfect. We advise you make use of distilled water only to avoid problems of white dust as a result of minerals in the water, or if you want a less expensive option, you can as well choose to go for the separately sold demineralization filter.


  • silver clean protection surface,
  • warm or cool mist option,
  • ultra quiet,
  • auto mode,
  • touch-sensitive digital display with night light,
  • timer,
  • low water indicator,
  • long runtime,
  • extended reach wand.


  • it is expensive,
  • white dust problems.

2) PureGuardian H7550 10L Output per Day Ultrasonic Warm and Cool Mist Humidifier

PureGuardian H7550 10L Output per Day Ultrasonic Warm and Cool Mist Humidifier
Check the price of this product

H7550 pureguardian humidifier unit is designed in a box-shaped manner, spanning just a few feet off the ground and weighing 5.45 pounds. This places it on a lighter scale than the H80000B, although they have just about the same dimension, which is 5.1 x 19.8 x 14 inches for the H7550.

The unit gives the option of making use of an extended reach wand which has two pointy outlets to the user, with a slightly protruded design at the top in which the wand would be attached.

It features the ever excellent auto mode, which automatically senses and maintains a set level of humidity chosen by the user, in the room. The unit makes use of no evaporating pads, wicks, or filters, which is a plus in terms of expenses, as you wouldn’t have to purchase frequently a replacement when they go wrong, though it has a disadvantage of leaving you more exposed to contaminations in your water.

The trademark silver coated tank surface, which helps to inhibit the growth of germs and molds in the tank over time before routine cleaning is required, is also present in this unit while it poses a fantastic choice option that allows you to choose between a cold and warm mist and is ultra-quiet while in operation.

With a silent, blinking indicator that signals when water runs out and an explicit slit by the side that displays the water level, it affords a dual option in notifying the user when the water runs out, while the unit stops to produce mist on a zero tank level, avoiding fire hazards.

The unit is easy to use, with a digital display at the top that shows the humidity level even when the device is in use, so you are never ignorant of the atmospheres present condition. The tank is relatively easy to fill and clean, having a handle that helps in easy lifting when it is time for easy refill. The unit can serve large sized rooms up to 450sqft and can put out a mist of up to 10L per day.


  • auto mode,
  • extended reach wands,
  • adjustable timer,
  • long runtime, warm and cool mist option,
  • low water level indicator,
  • silver clean protection surface,
  • auto shutoff,
  • timer.


  • the absence of filters,
  • it is expensive,
  • white dust problems.

3) PureGuardian H3200WCA Ultrasonic Cool Mist Humidifier

PureGuardian H3200WCA Ultrasonic Cool Mist Humidifier
Check the price of this product

This humidifier takes the towering type looks but doesn’t actually stretch in height as one may think. With dimensions of 10 x 10 x 23.3 inches, this unit doesn’t span as high as a regular cushion chair in the sitting room, but sure does great work in regulating the humidity level up.

It is designed for small to medium rooms precisely, and we would advise you look away if your room is a large size. The tower design though ensures the unit occupies less space than most of the bigger type.

It lacks a digital interface unlike the units reviewed before it, although it shares some similar qualities. One of the prominent ones is the silver clean protection surface, in which the inside part of the water tank is coated in silver to reduce the growth of slime, mold, and bacteria that causes contamination. The top of the unit is sectioned in two halves, with one side containing the multi-directional cool mist nozzle outlet, and the other accommodates the light touch buttons for easy control of the device.

There is an inbuilt protect system it could boast of in the automatic shutoff feature, when the water runs out, while a blinking light comes up to draw the attention of the user to the absence of water in the tank. The timer is another feature this device shares with the previous ones on our list so far, and it is a 12-hour duration allowing you to choose not just when to run but also for how long.

In all, it us very easy to use and although a little behind in technological advancement, it is easier to understand with an analog setup and light touch buttons to press, varying the fan speeds. It is also very easy to fill.


  • long runtime,
  • silver clean protection surface,
  • timer,
  • auto shutoff,
  • empty tank indicator light.


  • only suitable for small to medium-sized rooms,
  • lack of filters,
  • no digital interface,
  • cool mist only,
  • white dust problems.

4) PureGuardian H4810AR Ultrasonic Warm and Cool Mist Humidifier 

PureGuardian H4810AR Ultrasonic Warm and Cool Mist Humidifier 
Check the price of this product

Pureguardian H4810AR ultrasonic humidifier so far could boast of having the best looks on our list of reviewed products before it, featuring a curvy design on both sides. The unit is very small height wise but is a bit robust, but could be easily fit on a table top and is just slightly taller than a regular vase, adding a touch of beauty alongside its good humidifying properties. It can serve specifically small to medium-sized rooms only (up to 300sqft).

The ultrasonic humidifier possesses the quality of being discrete during operation, as it is almost not noticeable while releasing fine mist into the air. What stands out in this unit when compared to the previous products you’ve red so far is the presence of an aromatherapy chamber with the pads, which would add a soothing and pleasant smell to your home along with its mist.

A low water indicator is also present for signaling to the user when there is a need for a tank refill, while the tank’s surface is built with a clean silver protection which reduces the growth of bacteria and mold that could build up over time. The water tank has a capacity of 2 gallons, which provides enough back up to run for about 120 hours at the lowest setting.

The large water tanks of this humidifier and a lack of top refill option, makes it quite difficult to lift and place under the tap at least once daily, and is a really turn off about this unit (two tanks weigh about 17 pounds) though it has a cool or warm mist option you can choose from.  Using regular tap water too could result in white dust, which is why we recommend only distilled water be used with this product.


  • silver clean protection,
  • aromatherapy tray,
  • warm and cool mist option,
  • long runtime,
  • low water indicator,
  • timer


  • no auto mode,
  • hard to fill.

5) PureGuardian H1510 Ultrasonic warm and cool Humidifier

PureGuardian H1510 Ultrasonic warm and cool Humidifier
Check the price of this product

This model of humidifier is also among the range of ultrasonic pureguardian products that have have been released over the years, meaning it also possesses the universal tendency of all ultrasonic humidifiers to be ultra-quiet, in a nutshell, it is quiet during operation.

It poses a look that is exactly the same with the H4810AR, and one can easily confuse them for one another, with the only striking difference coming in the user interface section. The H1510 is very analog, possessing the old technology of knobs being used to vary the mist output and other preferences.

The mist outlet at the top is rather multi-directional and can be varied to face a specific location in the atmosphere. With a water tank that is relatively large in size (about 1.5 gallons), though smaller than the H4810AR which is two gallons, it affords a reasonably large amount of runtime depending on atmospheric conditions, though not up to the stated 100hours by the manufacturers, it is more than sufficient to keep you away from refill for a day.

This unit, as earlier said, is more analog than digital and for this reason, it lacks a display interface, timer feature or the very much desired auto mode. This leaves a lot begging about this product and could be a real turn off for users looking for maximum comfort alongside excellent humidifying capacities.

The unit possesses a decent option of wether a warm or cool mist, though the warm mist have been found not to achieve expected temperatures, and like the H4810AR, refilling could be difficult, always having to turn the blue portion of the unit upside down, then flip back up into the unit when you are done.

It also has the problem of white dust like most ultrasonic humidifiers when used without a mineralization cartridge, as you just have to purchase one or use distilled water to solve its issue. Asides from those, it is effortless to use.


  • multi-directional mist outlet,
  • water refill indicator,
  • warm or cool mist option,
  • silver-resistant clean surface.


  • no timer,
  • no auto mode,
  • resistant surface,
  • suitable for small to medium-sized rooms only.

6) PureGuardian H940 Ultrasonic Cool Mist Humidifier

Best no filter humidifiers
Check the price of this product

This model features a slim desktop design, being reasonably robust at the bottom, but slims down towards the top, whose part is transparent, allowing you to see the water level and easily monitor your refill schedule. It also comes with a water tank that is designed with a clean silver surface, which helps to prevent Bactria, slime, and mold growth.

The unit weighs just amount 2 pounds, which makes it relatively weightless when compares to humidifiers of similar features, and with a dimension of 7.3 x 1.3 x 15.3 inches, it wouldn’t take more than a regular portion on your table top. This build makes it easy to move around, depending on where it is needed, it is designed for small sized rooms though, which is could be a real turn off depending on the room it is intended to be used in.

The mist nozzle at the top is id designed directionally, helping the unit release mist more efficiently, though it lacks the option of allowing the user choose between cool or warm, as it is strictly cool mist. Its auto shutoff feature turns it off when the water level drops too low while turning the indicator color red.

This unit is rather analog in nature, requiring its user to press the power button several times to toggle between the several available options, which puts it among the analog humidifier type with no auto mode or timer features available. It is also advised you make use of distilled water to avoid problems of white dust.


  • cheap and affordable to maintain,
  • silver clean protection,
  • directional mist nozzle,
  • auto shutoff,


  • low runtime,
  • no auto mode,
  • no timer,
  • suitable for small sized rooms only.

Also Read: Boneco U200 reviews

Consideration for picking our best product

  • Humidifier capacity:

The capacity of humidifier being referred to in this case is the amount of room size it can serve. Several products amongst the pureguardian humidifiers have been reviewed from results gotten having being tested, due to the tendencies of manufacturers to over hype product performance. Depending on the size of your room, before purchasing any product, always check to see if the capacity fits your need.

  • Runtime:

The run time is another major consideration to keep in mind, as so many products out there might possess the good humidifying ability and would perform well even in large sized rooms, but requires the constant need of a refill. Over time, this could become really stressful and frustrating, which is why a product that can run for a long while performing its moisture control level well is of the essence.

Note that each product run time stated in this article were tested on the lowest setting condition and depends on atmospheric conditions. In very dry atmospheres, the machine could expend more mist, therefore consuming more water and reducing its normal runtime.

  • Automatic features:

The automatic features designed in recent humidifiers, are to help provide a better user experience and more comfort when using the unit. Features like the automatic mode and timer, are two of the significant options to look out for, as the auto mode helps relieve the stress of having going to manually set your preferred choices. And the timer saves money on energy bills.

  • Size:

Depending on the available space in the home, you should go for a unit that creating an area for wouldn’t be much of a headache. Being lightweight and mobile would also come as a plus, as it helps in moving it easily around the home.

Also Read: Boneco U350 reviews

Pureguardian ultrasonic humidifier not working: Troubleshooting

There are several reasons that could cause a humidifier to stop functioning, and if for any reason you encounter any, we have compiled a comprehensive summary of possible problems and solutions that would rescue you in such situations.

In carrying out this troubleshooting, you don’t really need technical know-how, as far as you are handy with a screwdriver then you are up for the task.

1) No water vapor being released

In such a situation, there are a few things that could cause this problem in the humidifier. The first step in troubleshooting is always to plug and unplug to rule out power failure issues, and when you are sure there is a power running into the unit, check to see if the tank is properly attached to the other part.

If there is a disconnection, it could lead to no mist being released although there is water present in the tank. Lastly, do well to clean the surface of the ultrasonic disc in case there is dirt causing a blockage.

2) The unit blows air only without the presence of mist.

In a case where you discover that the unit releases air only without mist being included, it could be as a result of too much water being poured into the water tank; we advise you to drain a little then fix It back to see the outcome.

If the condition persists after doing that, then it could be because the set humidity is currently below the current temperature, and in such case, you should increase the level of desired humidity.  Before trying this, you should also try changing to soft water if hard water was used initially, and also clean the ultrasonic disc in case of dirt accumulation.

3) Humidity released is very low

One thing is sure in this situation, and it is the fact that the surface of your ultrasonic disc is dirty. A thorough cleaning of the disc would do wonders in increasing the amount of mist it produces. Water in the unit might also be too cold, and such a situation, you replace with cool but not very cold water.

4) Warm mist is not produced.

For a unit to produce warm mist, it needs to heat up the water in the tank for about 10 to 15 minutes. Within that time, the mist may not feel very warm, since it is outstanding in nature and mixes with you remediate atmosphere, which tends to cool it.

In this situation, allow the unit to run for a while (about 30mins) on a warm setting, then you feel the base of the tank to know whether it is hot or not. If it is warm, then the unit is working well, and in a little while, the room would start to feel warm.

5) Bad smell accompanying the mist

There is only one explanation for this happening, which is bad maintenance of the unit. When you keep missing cleaning routines and other maintenance you should carry out, the bound result is pollution which would contaminate the water in the tank, giving it a bad smell that is released along with the mist by the unit. Thorough cleaning and rinsing with clean water would solve your problem.

6) Unit stopped working

The two primary reasons why a unit suddenly shuts down or stops working is due to a low water level or an empty tank. This is a built-in safety feature that helps conserve energy, there saving you cash on bills and also potential hazards.

7) Water accumulates outside the unit

The unit not being placed on a leveled surface could cause water to accumulate, eventually finding its way out to the floor. We recommend you place on a leveled surface and also point the output nozzle away from directly focused objects, as this could cause moisture to accumulate on it, leading to the water that would drip to wet the surrounding.

8) Water dripping while refilling

Dripping situations are always caused by loosed ends, and this one isn’t an exception. In case you find yourself in this situation, firstly always drain completely the remaining water in the tank before transporting for a refill and twist firmly the secure cap after the filling is complete.

9) Noisy operation

If the unit wasn’t noisy at the point of manufacture, then something has indeed gone wrong. It could be with loose ends making cranky noises, so we advise you to check and tighten up every end. The unit should also be placed on a hard leveled surface, as being placed on a soft, absorbent surface could cause a few problems including this.

Also Read: Aprilaire 800 reviews

How to clean pureguardian ultrasonic humidifier

The unit should be washed thoroughly, including the spray cap spray spout and water lid which is found by the side of or sometimes the bottom of the tank, after that dried. Leaving excess water at the base of the tank also contributes to mild and bacteria development when they become stale, breeding organisms over time.

The ultrasonic disc is another area that requires frequent cleaning, which could be done using diluted white vinegar after which rinse correctly to remove any residual vinegar odor. However, we recommend that you do not scrub while doing this, and drain remaining water/vinegar with a clean, dry cloth.

Also Read: Best Humidifier for dry Mouth

Pureguardian humidifier replacement parts

Though there are several generic product parts available on the free market today, we encourage you to only go for those recommended by the manufacturers.

The company possesses a responsive customer support that is always ready to take in your questions and requests. It could be sometimes hard to differentiate between parts of similar manufacturers, while a thin margin in looks exists between verified and counterfeit goods.

These products are most times cheaper and of low quality, but how they perform is what is most paramount, which is relatively poor. But with licensed products from germguardians, you get an exact fit with what was damaged.

Final thought 

With much consideration, and weighing the several pros and cons of the different products, the PureGuardian H8000B comes out as the best ultrasonic humidifier on our list.

Although all the humidifiers share a lot in common like the silver clean protection, this unit has more in the presence of a reach wand and much digitized manner of operation in the timer and auto mode.

You are never starved of choices in the cool or warm mist options and a pretty impressive runtime to cap it all up.

PureGuardian H7550 is the nearest in features and performance to the H8000B, also boasting the same extended wand reach and a cool or warm mist option while having the auto mode and timer feature.

Although they are both suitable for large sized rooms, the H8000B pips it in their share level of performance in regulating humidity in the home.

Related Post: