best top fill humidifier

After cleaning, refiling a humidifier is arguably the most stressful task that humidifier users cannot avoid. For this reason, humidifiers with a top filling design are a gem and are extremely effective at making your experience more pleasant and seamless.

I put this article together after testing about a dozen of the most popular top fill humidifiers myself. Below, you will find my reviews of the best top fill humidifiers on the market today in order to help you make the right choice when selecting a product. Regardless of the ease of filling, a humidifier is still supposed to be able to do its basic job well, which is humidifying, so I made sure to keep that in mind.

My first place and most recommended product among the best top filling humidifiers is the Keecoon unit. Taking a quick look at some of its qualities, it has a neat top fill design and a 1500ml/h mist output with 4.2 gallons for over 24 hours of runtime.

On top of all this, perhaps its most impressive quality is being able to humidify up to 1000 sq. ft. of room size – much more than most users would ever need.

Check out my full-length reviews below:

4 Best Top Fill Humidifiers
Humidifiers Water tank capacity(Gallons) Space Coverage(sqft)Runtime(hr)Automatic ModeMist Output(ml/hr)
Keecon Top fill Large Humidifier 4.2100024YES1500
Elechomes warm and cool Top fill Humidifier 5.575540YES600
Honeywell Top fill tower Humidifier with digital Humidistat 1.25N/A36YES220
MOSFIATA 5L top fill warm and cool mist Humidifier 580040YES 300
GENIANI Top fill cool most Humidifier 122018YES N/A

A Brief Overview

Before I get to the full-length reviews, here’s a quick overview of my top pick, as well as four other humidifiers that qualified for my recommendation after testing.

Top Pick

1) KEECOON Top Fill Large Humidifier

KEECOON Top Fill Large Humidifier


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As previously mentioned, this Keecoon unit checked all of my boxes with ease. It has a huge capacity that will allow it to humidify continuously for 48 hours and the ability to humidify a huge space of 1000 sq. ft. or more.


It has a sleek design, a built-in air-purifier, and a range of neat controls to make sure it is perfect for your specific requirements. This is one of the very few top fill humidifiers that I tested that could humidify a whole house or greenhouse. It’s very impressive and should definitely be one of the first ones you consider.  

Other Notable Mentions


2) Elechomes Warm and Cool Mist Top fill Humidifier

Best humidifier for Sickness
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This unit takes the number 2 spot due to its sleek design, helpful remote control, and easy-to-use top fill design.

It is designed to humidify a slightly smaller area than the KEECOON unit but will still be more than powerful enough for most uses.

3) Honeywell Top Fill Tower Humidifier with Digital Humidistat

Best top fill Humidifier
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Automatic humidification is the standout feature of this Honeywell unit. I could easily set my preferred relative humidity and trust it to keep monitoring the space to ensure this level was reached.


It has a slightly lacking water capacity when compared to some of the others on the list, but it still gave me a solid runtime before I had to fill it up again.


4) MOSFiATA 5L Top Fill Warm and Cool Mist Humidifier

Bes Dehumidifier for large room


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I loved the large 5L water tank on this MOSFiATA unit, and the top fill design made it a pleasure to use. This one’s suitable for medium to large-sized rooms, and one of my favorite features was the ability to use it in combination with aromatherapy oils. 


5) GENIANI Top Fill Cool Mist Humidifier

GENIANI Top Fill Cool Mist Humidifier


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Finally, this GENIANI humidifier has a smaller water tank than most of the others that made it to the list, but it still performed well. It was very quiet when operating and also comes with the much-coveted aromatherapy feature!


5 Best Top Fill Humidifiers – My Full Reviews


1) KEECOON top fill Large Humidifiers

KEECOON Top Fill Large Humidifier


Awesome design

Let’s forget this is a humidifier for a minute; the looks of this device would blow anyone away. It resembles a blend of a slender aquarium and some portable digital display devices at the same time.

Now let’s come back to the fact that it is a humidifier. It has a transparent body that allows you to see through the tank to monitor the water level easily, and also a digital control soft-touch interface on the front side.

This interface makes it easy to interact with the humidifier and perform basic tasks like varying humidity or using its installed automatic functions, which are discussed in the latter part of this review.


In addition to its looks, the capacity of this unit did not disappoint. It has an incredible mist output rate of 1500ml/h on the highest setting. That’s just extraordinary and can conveniently cater to the needs of rooms up to 1000sq. ft. In the world of the best top loading humidifiers, this device is unmatched.

High capacity with poor water holding quality would put you through more stress than you can imagine. This is why I was extremely pleased with this KEECOON model’s 4.2-gallon water tank. After I had filled it up, I turned it onto its highest setting, and the water tank didn’t run dry until a full 47.5 hours later.

Top fill and energy saving

Of course, as I was only considering top fill humidifiers for this article, only top fill products made it to the list. This humidifier can be easily filled from the top by simply removing the cover and pouring in water. I could look through the transparent tank to easily gauge the water level and avoid an overflow.

For its size and capacity, energy consumption was something I was worried about. However, its energy-saving design ensures that you get this premium service at a low energy cost. It is energy-saving; therefore, that bill spike will not be a result of running this guy.

2-in-1 device

Aside from being primarily a humidifier, this unit also cleans the air while operating. Therefore, it is a 2-in-1 unit, where you get the effect of an air purifier and humidifier for the price of a humidifier. That’s one more reason why it claimed my top spot.

Automatic mode and easy mobility

This unit was also able to run intelligently. I could select a precise humidity range on the control panel and watch the humidifier increase or decrease its output accordingly. After choosing this, the unit continued to monitor the humidity and ensure it was in the target range – shutting off its output when it had achieved it.

One obvious appearance feature that we have not discussed is its wheels. It sits on 4 of them, allowing you to push it around depending on where you need it. I was very pleased with its mobility.

Remote control and safety auto-shutoff

Another digital convenience feature is seen in its remote control. With the 5-meter range remote, I could vary the settings of the humidifier from the comfort of my couch. The remote control covers just about every feature it possesses.

For safe running, the automatic shutoff is also in place to keep track of the water level. As soon as this drops too low, the unit goes off and only comes on when the tank is refilled. Handy!

What I Liked:

  • Awesome modern design
  • Responsive digital display and control panel
  • Suitable for large-sized rooms up to 1000 sq. ft.
  • High mist output of 1500mL/h at the highest speed.
  • Energy-saving with easy top fill design
  • It comes with wheels at the bottom for easy movement
  • A large water tank of 4.2 gallons for more than 24 hours of runtime, with dual 360 degrees output nozzles.
  • The automatic mode
  • 2-in-1 air purifier and humidifier with transparent water tank for easy monitoring
  • The product is easy to clean, and the package comes with an extra cleaning brush
  • 5-meter remote control and very quiet operation.
  • Auto shutoff on low water level and a 12-hour timer
  • Came with a 12-month warranty

What I Disliked: 

  • This unit seems to have everything but does lack an aromatherapy chamber for essential oil use, which is present on some other models

My Rating – 5/5

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2) Elechomes Warm and Cool Mist top fill Humidifiers

Best humidifier for Sickness


Cool and easy top fill design

Elechomes devices have a trademark box-shaped design with the front side bearing a screen that displays the atmosphere’s immediate humidity level. This digital display panel also harbors soft-touch buttons that make it easy to operate. All in all, the boxed shape design is cool and adds a touch of beauty to the home environment.

Also, its top is detachable for easy refills. This top fill design made it very easy to use and saved me the stress of detaching or taking the humidifier to a sink.

Easy to use with remote control

This humidifier possesses numerous features that make it super easy to use. All can be controlled through a set of soft buttons on the unit or through a remote control that works well. With the remote control, you can easily vary its settings from a distance.

Good capacity and high humidity output

One of the most important qualities of a humidifier is its capacity and flow rate, and this unit packs a lot of both. With six different humidity levels to choose from, this device produces enough mist to humidify up to 755 sq. ft. of space. It has a 600ml/h mist generation rate, and an amazing feature is the output medium is dual 360 degrees nozzles that allow you to control the mist direction precisely. This impressive mist output is coupled with a large 5.5L water tank which allows the humidifier to run for up to 40 hours before a refill.

2-in-1 warm and cool mist option

Elechomes designed this unit to remain relevant and effective in both cold and hot seasons. You can either select a warm or cold mist, depending on your immediate needs. This design saves you cost instead of purchasing a steam mist product or vaporizer along with a humidifier. This function worked well during my tests.

Safe use

Included safety features are an auto-shutoff and child-lock button. The auto-shutoff monitors the water level in the tank and turns the device off as soon as it drops too low. You can also turn on the child lock button to prevent kids or pets from toying with the unit by locking the buttons. When on, pressing the buttons did not affect the unit at all – perfect.

What I Liked:

  • Nice design with digital LED display and soft-touch control
  • Remote control option, which I found convenient
  • Easy to use top fill design
  • Large 5.5L water tank that gave me 39 hours of runtime
  • High humidity output of 600ml/h with dual 360 degrees mist spray nozzles
  • It is suitable for large rooms up to 755 sq. ft.
  • It produces only about 20 – 32dB of noise, which didn’t bother me at all
  • Warm and cool mist option with six levels of humidity control
  • Auto shutoff on low water level and child lock button – both worked great

What I Disliked:

  • It created a small amount of white dust when used with my hard water

My Rating – 4.8/5

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3) Honeywell Top Fill Tower Humidifier with Digital Humidistat

Best top fill Humidifier


Two-way top fill design

Although not the most appealing aesthetically, this Honeywell product is still a great humidifier for the price. It possesses a two-way top fill design that allows you to pour water from the tap for optimal convenience quickly. The tank’s top is exposed by slits, which allow water to pass through easily.

You can either fill it through that space or detach the tank completely from the unit and fill it elsewhere. I tried both, and filling it without detaching anything was totally fine.

Automatic humidification

Automatic humidification is the standout feature of this device, which allows you to choose a specific relative humidity level from a range of 30% to 69%. After selecting this, the unit ran automatically to increase or slow down to meet the set goal. It operated independently in this mode and did not need my input.

Automatic shutoff and 12-hour timer

It automatically monitors the amount of water left in the tank and shuts down as soon as it goes low for safe running. For more flexibility, Honeywell has also added a 12-hour timer, with which you can select the precise runtime of the humidifier. This way, you do not have to worry about over-humidification or excess running that could consume more power.


Now to the most important quality of a humidifier. This product has a 1.25-gallon capacity, allowing it to run for 36 hours on the lowest setting. With this unit, you can go for days before a refill. However, it is only suitable for small to medium-sized rooms, which will be a downside for some.

What I Liked:

  • Two-way top fill design with removable water tank and easy-grip handle
  • Digital humidistat (30% – 69% range) for automatic humidification
  • Auto shutoff on low water level with 12 timer feature
  • 1.25-gallon water capacity that gave me a runtime of 35 hours on a low setting

What I Disliked:

  • It is only suitable for small to medium-sized rooms
  • The filters do not seem to last as long as some of the other models I tested

My Rating – 4/5

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4) MOSFiATA 5L Top Fill Warm and Cool Mist Humidifier

Bes Dehumidifier for large room



This humidifier generates mist at a 300ml/h rate, therefore putting it at a suitable capacity for small to medium-sized rooms. When I ran it in my mid-sized kitchen, it performed just fine.

It also has a 5L water tank, which lasts up to 40 hours on the lowest setting. When testing, this stood out to me as one of its best features as I love to just forget about it and not have to worry about countless refills.

Cool and easy-to-use design

The design of this humidifier is next-level modern. With a simple box shape and curved edges, this product has a completely see-through water tank that allows you to monitor the amount of water left easily. More impressively, it has a wide digital display on the front side with soft-touch buttons. The screen displays the current timer setting and the mist speed that the unit is running on – everything you could ask for.

Dual warm and cool mist option

Once again, this is another humidifier that accommodates the warm and cool mist option. This affords you flexible use as temperature varies across the year. Cool mist for warm seasons, and warm mist for cold seasons, you remain satisfied and comfortable across climate changes. I tried it out during a colder time of the year, and the warm mist was a nice touch.

Aromatherapy and top fill design

The first product on our review list with this feature. Although this unit might not be the best top fill ultrasonic humidifier in this article, it possesses a feature that only one other product on my list has.

With aromatherapy support, you are provided with a chamber where you can add a few drops of essential oils. You can then enjoy the health benefits of aromatherapy while using it. I found this feature to work great, and I really enjoyed being able to change the oils based on my mood in the morning.

Also, refilling is totally easy. All you need to do is remove the top cap and pour in water. Your days of detaching a tank or having to drag the whole unit and then flip it over under a sink are long gone.

Auto shutoff with an 8-hour timer.

For self-protection and your protection, this unit has an auto-shutoff that prevents heating and other related hazards. The automatic shutoff kicks in when the water level drops too low. It also has an 8-hour timer for selecting the precise duration it would run and goes off after that.

What I Liked:

  • Cool digital display with soft-touch buttons and remote control
  • Large 5L water tank with 360 degrees mist output and up to 40 hours of runtime
  • 8-hour timer and six levels of humidity control
  • Good moisture output rate of 300ml/h
  • It is suitable for medium to large sized rooms
  • The top fill design made it easy to refill, and the transparent tank made it easy to monitor the water level
  • It supports aromatherapy oils
  • Long filter life that lasts up to 2 years before requiring replacement
  • Dual warm and cool mist options that worked well

What I Disliked:

  • Although I didn’t experience it, some customers have complained about the sudden pack up of the unit after a few uses

My Rating – 4/5

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5) GENIANI Top Fill Cool Mist Humidifiers

GENIANI Top Fill Cool Mist Humidifiers


Top fill design and easy to clean

I couldn’t make a review list of top fill humidifiers without adding a Geniani product. Known for its simple looks and easy-to-use nature, this humidifier also has a top fill design that makes the refill process as easy as possible. No removing the tank, no flipping it upside down, just pour in water through the slit at the top.

You can also remove the whole top cover for more refill convenience and also when it is time to clean it. I found cleaning it to be very easy because virtually all parts of the unit became accessible as soon as the top cover was lifted.

Automatic mode and quiet operation

For your convenience, this humidifier is built with a smart mode. In this mode, it maintains the humidity in your home at a healthy level through the help of an intelligent sensor. However, you can still manually adjust its moisturizing speed by choosing either low, medium, or high settings. It is also ultrasonic, which made it very quiet while testing, and I slept through the night without even knowing it was on.

2-in-1 design

Although I wouldn’t exactly call it a 2-in-1 device, it is the only other product in this review that supports aromatherapy and technically gives it a right to the title. It is essentially both a humidifier and diffuser in the same product because it can be used with essential oils. Enjoy the benefits of having a 2-in-1 product with this humidifier.


The unit is a little disappointing in capacity. Although it confidently humidifies the recommended room size, its capacity does not quite match that of others we have reviewed so far. It is only suitable for small rooms up to 220sqft in size and has a 1-gallon tank that doesn’t provide enough for running for a day. It averages about 18 hours on the lowest setting. This meant that I had to refill it more often than I would have liked.

What I Liked:

  • Easy top–fill design with inbuilt water gauge for monitoring the level
  • Automatic mode and three levels manual control option
  • Fairly large 1-gallon water tank that gives up to 18 hours of runtime
  • The ultrasonic design makes it very quiet while operating
  • Automatic shutoff on low water level, and easy to clean water tank
  • 2-in-1 humidifier and diffuser (it supports aromatherapy)
  • Came with a two-year warranty

What I Disliked:

  • It is only suitable for small-sized rooms up to 220sqft
  • It seems to lack durability and is prone to leakages according to some reviews
  • I experienced some white dust problems when used with my hard water

My Rating – 3.5/5

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Features to Consider When Choosing the Best Top Fill Humidifiers

Top fill design:

Products with top fill design make a humidifier easy to use and save you a lot of stress on refilling. This design is very common today and is seen across all categories of humidifiers. Purchase one with top fill rather than an equivalent product without it, and never have to fight with detachable water tanks ever again!


The capacity of a humidifier cannot be neglected either. Although this article focuses on the best top fill humidifiers, top filling does not humidify the air! A humidifier should have enough capacity to raise the relative humidity of your room for a long period of time. Details to look out for are the room size recommendation, mist output rate, and water tank capacity. My top 4 picks all performed very well in this area.

Automatic/ smart mode:

This is a mode that creates the best humidifier experience for users. In smart mode, a humidifier runs independent of your input and automatically manages relative humidity in the air.

Noise level:

Even the largest capacity and best top fill designs are no good if a unit emits a continuous loud noise. High noise levels can ruin the quality of a humidifier; therefore, it should always be considered before purchasing one.

What Are the Benefits of Using a Top Fill Humidifier?

Top fill humidifiers have two major benefits. They are:

  • Easy to clean:


With a top fill product, you can easily take off the top cover and gain unrestricted access to the humidifier’s internal parts. This zero restriction makes it possible to reach deep parts that might have been impossible to get to otherwise and makes it very easy to clean.

  • Easy to refill:


This is the most obvious benefit of using a top fill product. Many humidifiers require you to detach the water tank and fill it elsewhere, or worse, by carrying the whole unit. This process also involves lots of flipping upside down and messy water leakages.

With a top fill design, you can easily top up without any of these stresses. Simply pour water in through the opening at the top.

How Should You Fill a Top Fill Humidifier?

It is easy, detach the top cover, and pour in water. The major obstacle is in figuring out how to remove the top cover because different products have different designs and ways that it should be done.

Most of the time, the instructions can easily be found in the units’ instructional manual, do well to go through it, and you should not have any problem removing the top.

On the other hand, you do not have to remove the cover to refill some units (like the Geniani product). Units like that have a slit through which you pour in water; therefore, the top has to be removed only when cleaning.

Are Top Fill Humidifiers Better Than Non-top Fill Humidifiers?

Speaking in basic terms of what a humidifier should be (a moisture-producing machine), I cannot say that top fill products are better than non-top fill humidifiers.

However, for my purposes, the fact that you can fill them through the top makes them much easier and more convenient to use!

If there was a choice to make between a top fill humidifier and a non-top fill humidifier, I would always choose the top fill unit.

Note that this comparison does not consider other features like its room area capacity, mist output rate, run time, and other modern features. In this comparison, I assume that they both have all these in common and are on par with one another.

Final Verdict:

Any humidifier that you intend to run for long hours must have the top fill design if you want it to be easy to use. This makes your life healthier and easier when taking refills into account. The best top fill humidifier for me after I tested them all was definitely the KEECOON product. I would recommend it to absolutely anyone.

Aside from the top fill feature, it packs so much quality and modern design that makes it a pleasure to use and will allow it to be a viable humidifier for many years.

Its 1,500ml/h mist output rate is unmatched, and with a 1000 sq. ft. area capacity, it couldn’t get any better.

The Elechomes Warm and Cool Mist humidifier is also a good product that I would recommend as the next best to scale down a little bit. It possesses the warm and cool mist function that is not seen in the Keecoon unit and humidifies at 600ml/h.

It is suitable for large-sized rooms and comes with other automatic features that give you a great user experience.

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