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8 Best Filterless Humidifiers For Clean Air

No one wants dry air as it is the primary reason for issues like dry throat, dry skin, and chapped lips. But, no one wants a noisy humidifier as a solution to this problem. This is where filterless humidifiers come to the rescue. These units are much quieter and more convenient to maintain. On top of that, it maintains the humidity levels at your home and restores much-needed moisture.

There are some factors that one needs to consider to make the right choice when it comes to filterless humidifiers. In the following section, we have listed the basic factors that will help you select the best one for you.

  • Tank Capacity: The tank capacity is an important consideration as it determines the time required between two fillings of the humidifier. There are two capacities- small and large with their own set of pros and cons. The small tanks are suitable for those who need the humidifier to run for small intervals while the large ones are suitable for those who use the humidifiers for longer periods in time.
  • Mist Output: This factor shows the amount of mist that the humidifier produces in one hour. There are many models that allow you to customise the settings according to convenience. While considering this factor, you need to make sure that you choose a humidifier with mist output of eight ounces per hour or more as anything below that will not be as effective as you want it to be.
  • Auto Shutoff: The auto-shutoff feature is especially important when you are looking at filterless humidifiers due to their smaller tank capacity. This feature turns off the humidifier when it is no longer needed which prevents overheating and reduces power consumption.

More details on the factors to consider when buying filterless humidifiers are discussed in the “Buying Guide” given later in the article. To make your job easier, we have listed the best filterless humidifiers with notable features, pros, and cons. Check them out to make the best choice.

Best Filterless Humidifiers Table

Best Filterless HumidifiersFilter TypeCapacityRun Time (hrs)Buy Now
Pure Enrichment Filterless HumidifierFilterless1 gallon10-24Check On Amazon
Everlasting Comfort Filterless HumidifierFilterless1.6 gallons50Check On Amazon
Geniani Filterless HumidifierFilterless4 litres40Check On Amazon
Levoit Filterless HumidifierFilterless6 litres60Check On Amazon
Vicks Filterless HumidifierFilterless5 gallons20Check On Amazon
Raydrop Filterless HumidifierFilterless0.45 gallons9Check On Amazon
Rosekm Filterless HumidifierFilterless0.53 gallons10Check On Amazon
Okaysou Filterless HumidifierFilterless6 litres50Check On Amazon

Best Filterless Humidifiers Reviews

1. Pure Enrichment Filterless Humidifier

Pure Enrichment Filterless HumidifierPure Enrichment has come up with a filterless humidifier that features ultrasonic cool mist technology that has long-lasting relief from dry air. It enables the user to get restful sleep and helps to breathe easily for 10 to 24 hours continuously.

This humidifier has a large tank capacity of 1 gallon coupled with a strong steam output that offers suitable coverage for large areas up to 500 sq feet like offices, bedrooms, and other rooms. Also, it has an optional night light option for maximum operation in the dark and ultimate relaxation. The light also has several options like red, green, and blue. The automatic shutoff feature turns the humidifier off when the water tank is removed or if the water level signals low.

This package comes with an Air Conditioner power adapter, cleaning brush, and user manual. The brand also offers 5 years warranty and 24 hours customer support.

Best Features:

  • Filter Type: Filterless
  • Capacity: 1 gallons
  • Runtime: 10 to 24 hours


  • Large capacity tank of 1 gallon.
  • Night light option.
  • Automatic shutoff feature.
  • 24 hours operation.


  • Some people had problems with the mist speeds.

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2. Everlasting Comfort Filterless Humidifier

Everlasting Comfort Filterless HumidifierThe USP of this cool mist filterless humidifier is that it has a large tank of 6 litres which enables it to run without refill for 50 long hours. You can use it for a week during the nighttime if operated on low settings.

This humidifier features adjustable settings, which enables it to cover an area of around 500 square feet. Easy operation of just turning the dial can help to adjust the misting output. The 360-degree nozzle helps to select the direction you want the mist to be pointing at. Moreover, it functions on low noise less than 35 dB, allowing the user to sleep peacefully.

It also features an oil air tray that works as a diffuser and allows you to enjoy the aromatherapy of your preferred essential oil. The brand offers a 2-year warranty.

Best Features:

  • Filter Type: Filterless
  • Capacity: 1.6 gallons
  • Runtime: 50 hours


  • 50 hours of functioning.
  • Adjustable settings.
  • 360-degree nozzle.
  • Oil air tray.


  • The exterior gets very slippery.

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3. Geniani Filterless Humidifier

Everlasting Comfort Filterless HumidifierAre you looking for a dual-function air humidifier? Then, this is your perfect choice, offering aromatherapy, instant relief, and comfort within the area of 220 square feet.

This filterless humidifier features innovative smart sensors that maintain a healthy humidity level in the room automatically. It can adjust manually to the low, medium, and high mist output settings. Further, it is easy to refill with a separate essential oil tray which makes the process hassle-free. The silent operation under 30 dB enables the user to sleep peacefully at night.

The auto-shutoff feature helps to turn the humidifier off when the water levels are low. It is a perfect choice if you want to install it in a baby’s room for creating an ambient atmosphere.

Best Features:

  • Filter Type: Filterless
  • Capacity: 4 litres
  • Runtime: 40 hours


  • Dual function humidifier.
  • Smart sensors.
  • Auto adjusts the mist output.
  • Easy refill.


  • Some people noticed moulds after some months of use.

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4. Levoit Filterless Humidifier

Levoit Filterless HumidifierLevoit has come up with a filterless humidifier which is a fully-upgraded product and offers 4 times faster humidification with an area coverage of 505 square feet. This humidifier also allows you to control the settings through a mobile app.

The humidifier is very convenient for use as it raises the room humidity by 12% in just 30 minutes. It also allows voice controls like Alexa and Google Home to control it. The sleep mode provides the best sleep experience with soft night lights. The automatic mode helps to maintain the room humidity levels with ease. With all these, the plant-care programs enable plant humidity for their better growth and specialised plant management.

The large opening of the humidifier smoothens the refilling process and it also functions as a diffuser with the aromatherapy. Customer support is available 24/7 for help. Replacements for aroma pads and water filters are also very easily available.

Best Features:

  • Filter Type: Filterless
  • Capacity: 6 litres
  • Runtime: Up to 60 hours


  • 4 times faster humidification.
  • Convenient to use.
  • Large opening for easy refill.
  • Plant-care programs.


  • Some people faced issues understanding automation.

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5. Vicks Filterless Humidifier

Vicks Filterless HumidifierThis mini filterless cool mist humidifier is an important part of the family to ensure good sleep, especially if any of the members is sick or it is the season when the air is dry or allergies are on the rise.

It features a tank capacity of 5 gallons which allows you to run the humidifier without any hassle for 20 hours. For this product, the replacement filters are not required. This humidifier is particularly helpful during the flu and cold season as it eases the difficulty that you feel in the lungs. Additionally, it is suitable to be installed in a baby’s room to keep the humidity levels at the optimal.

Vicks is a trusted brand to provide the best kind of vaporizers, steam inhalers and humidifiers. It helps the user to get better sleep peacefully.

Best Features:

  • Filter Type: Filterless
  • Capacity: 5 gallons
  • Runtime: Up to 20 hours


  • Easy to use and quick.
  • Congestion and cough relief.
  • Suitable for allergy season.
  • Trustworthy brand.


  • Some people received used products.

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6. Raydrop Filterless Humidifier

Raydrop Filterless HumidifierThis is a vertical oval-shaped humidifier that occupies less space and is convenient to place in the room. You can fit it anywhere from the office desk to the bedroom nightstand or any other narrow space.

The product has a quiet operation and works at a noise level of 32 dB which does not disturb the baby’s sleep and can be kept on for the whole night. It is rated by the FCC as the perfect humidifier for a kid’s nursery and it is deemed safe for the baby. Plus, the easy knob control allows you to adjust the mist output level without hassle.

It also features additional powerful factors like the smart indicator and the auto-shutoff. The transparent design of the water tank enables one to see the water levels without needing to remove the lid.

Best Features:

  • Filter Type: Filterless
  • Capacity: 0.45 gallons
  • Runtime: 9 hours


  • Quiet operation.
  • Easy knob control.
  • Transparent water tank.
  • Additional features.


  • Some people had issues with the auto-shut-off feature.

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7. Rosekm Filterless Humidifier

Rosekm Filterless HumidifierThis filterless humidifier by ROSEKM has a run time of 10 hours on a single refill. The cool mist humidifier has a tank capacity of 2 litres or 0.53 gallons.

The auto-shutoff feature turns itself off when the water levels run low. It has a powerful output of 200ml/hour and enables quick relief in no time. It relieves you from troubles like dry skin, coughing, and congestion. This humidifier is compact in size and can humidify a room of 323 square feet, like a baby nursery, bedrooms, and offices. On top of that, a 360-degree nozzle allows the user to point the mist humidifier at a particular place.

The touch button allows ease of use. The transparent water tank, removable nozzle and water tank make it easy to maintain and clean.

Best Features:

  • Filter Type: Filterless
  • Capacity: 0.53 gallons
  • Runtime: 10 hours


  • Powerful output of 200ml/hr.
  • 360-degree nozzle.
  • Easy to use.
  • Easy to maintain.


  • Some users faced issues with the durability.

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8. Okaysou Filterless Humidifier

Okaysou Filterless HumidifierThis is a high-functioning filterless humidifier that has a tank capacity of 6 litres or 1.6 gallons that can run without interruption for 50 hours. It can easily dehumidifers a large room or the whole house.

The humidifier features two rotating mist outlets, which easily control the mist’s direction. The smart top-fill design allows tank refills easily and does cleaning and maintaining the product easier. Moreover, it also features an oil tray which enables it to work alternatively as a diffuser. This product also has a sleek panel that has touch buttons to adjust the mist output levels. Alternatively, it can also be controlled with a remote.

It also has additional functions like safety protection, a timer, and smart auto mode. The noise level during operation is lower than 24 dB. The auto-shutoff feature has a red light indicator and turns off the humidifier when the water level is low. The brand offers a 2-year warranty.

Best Features:

  • Filter Type: Filterless
  • Capacity: 6 litres
  • Runtime: 50 hours


  • 6 gallons tank capacity.
  • 2 rotating mist outlets.
  • Several additional features.
  • 24 dB noise level.


  • Several users faced leakage problems.

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Things to Consider When Buying a Filterless Humidifiers

There are several benefits of choosing a filterless humidifier but still you need to consider various things to choose your perfect humidifier. We have listed some of the basic factors that will help to make the choice easier. Read them all carefully before investing in the filterless humidifier.

1. Tank Capacity

This factor will decide the time your humidifier will work without needing to refill it. The tank capacity is the first factor that will allow you to use the humidifier peacefully without the hassle of refilling it. Both the large capacity and the small capacity tanks have their individual benefits and drawbacks. The large capacity tanks are suitable for the ones who need the humidifiers to run for a longer period in time, more suitable for regular home usage. While the small tank humidifiers are suitable for office use where you need the humidifier to run for just a few hours.

2. Mist Output

The mist output is determined by the ability of the humidifier to produce the amount of mist in one hour. This factor will let the user know the effectiveness of the humidifier and if it is suitable for you. There are several brands and models which specify the maximum and minimum mist output, which also depends on the settings of the humidifier as well. For the maximum output, the settings need to be adjusted to the highest mist output settings. The average mist output is around eight ounces in one hour. Make sure that you choose a humidifier that has a mist output of not less than seven ounces per hour as the product will not be as effective as you want it to be.

3. Auto Shutoff

This is an important factor as the filterless humidifiers are smaller in tank size as compared to the whole house humidifiers. Therefore, the water in the tank needs to be refilled earlier as it runs dry quickly. So, the auto-shutoff feature is a good consideration as it enables the humidifier to turn off when it is no longer required. This, in turn, helps to prevent overheating and unnecessary power consumption. This also saves it from being a fire hazard.

4. 360-Degree Nozzle

As filterless humidifiers are not sufficient as whole-house humidifiers; this factor becomes important when you are looking at direct mist production in some specific position. It is better to go for humidifiers with this feature as it would provide a better user experience. You would find yourself using this feature more than you plan to.

5. Maintenance

Cleanliness is the key when it comes to maintaining the filterless humidifier. As there is an absence of the filter, germs and bacteria can accumulate and pollute the tube and the tank. So, most of these humidifiers come with instructions as to how to clean them. However, cleaning these humidifiers is easier said than done. So, look at humidifiers with a broader opening, so it is easier to reach the insides of the product.

Filterless Humidifiers FAQs

1. How do filterless humidifiers work?

Ans: The filterless humidifiers work on the principle of ultrasonic technology, which enables it to convert water into vapour. It then emits the vapour out in the atmosphere. The diaphragm inside the humidifier vibrates at great frequency so that the water turns into vapour.

2. How can one clean the humidifier?

Ans: The easiest way to get a clean humidifier is by using white vinegar or hydrogen peroxide. You need to soak the humidifier in a solution of water and the solvent and keep it for one hour. After that, you can clean the inner parts with a brush.

3. How durable are the filterless humidifiers?

Ans: Filterless humidifiers are durable products and can last up to 10 to 15 years if you choose the correct product.

4. How long can the humidifiers work at a stretch?

Ans: There is no particular answer to this question. It depends on the tank capacity and run time of the humidifier. Therefore, it can last for any time between 10 hours to 50 hours.

5. What happens if you use an unclean humidifier?

Ans: An unclean humidifier can cause long-term problems like flu-type symptoms and even cause lung infection if used for a long time.


With this guide at your disposal, choosing the best filterless humidifiers will be like a walk in the park. We have listed all the criteria you need to know to buy filterless humidifiers. Therefore, you must apply these considerations when buying humidifiers. You can write to us in the comments section below if you still have doubts.

  • If you are here for the recommendations, we have listed the top three favourites from the list. The first recommendation for the best overall product is the Pure Enrichment Filterless Humidifier. It has a large tank capacity of 1 gallon with a night light option.
  • The second recommendation if you are on a budget is Everlasting Comfort Filterless Humidifier. It has 50 hours of non-stop functioning with adjustable mist output settings.
  • The third and final recommendation from the list is GENIANI Filterless Humidifier. It works as a dual-function humidifier and auto adjust the most output.

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