Best Filterless Humidifier Options

Best Filterless Humidifier Options
The best filterless humidifier is designed to remedy low humidity in your home or office.

Humidifiers are used to add moisture to the air to improve the humidity of a room, office or home.

The filtered design of early humidifiers worked well but over time consumers started moving away from them. The filters in filtered humidifiers became dirty and as a result, were considered unhealthy.

Filterless humidifiers were introduced in the marketplace as an alternative. What makes them attractive is that they can add moisture to the air and clean the air at the same time. They do this using an electrostatic charge to remove impurities from the mist it feeds into the air.

The improved humidity reduces dryness from the air you breathe, which can make the environment more pleasant and can reduce the number of skin and breathing issues.

Filterless Humidifier Comparison Table

There are a number of filterless humidifiers on the market, which makes it difficult to know which one is the best for your circumstances. Hence we have put together a list of some of the best on the market, which we also review later in this article.

In the table we outline:

  • Our selection of the best filterless humidifiers on the market
  • Images, including make and model
  • Most important features and specifications
  • Price – average price range you will see on Amazon –
    • $ = under $50
    • $$ = $50-$100
    • $$$ = more than $100
  • Customer ratings – average customer rating you will see on Amazon. This can be handy in making your decision.
ModelArea CoveredCapacityOperation TimeItem WeightWarrantyRatingPrice & More Info
Pure Enrichment 1.5 LPure Enrichment PEHUMIDIF250 sq. ft.1.5 L16 hours2.27 pounds2 years
4.0 out of 5 stars
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Pure Enrichment 1 Gallon Ultrasonic Cool Mist Humidifier XLPure Enrichment Ultrasonic Cool Mist Humidifier500 sq. ft.1 gallon20 to 24 hours2.55 pounds5 years
4.5 out of 5 stars
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Ultrasonic Diffuser & Essential Oil Set 400 MLUltrasonic Diffuser and Essential Oil Set10-13 sq. m.300 mLup to 6 hours2.05 poundsPlease contact the seller directly for warranty information for this product.4.6 out of 5 stars$
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ASAKUKI 500 MLASAKUKI 500ml Premium Essential Oil Diffuser270-320 sq. ft.500 mL10 to 16 hours1.6 pounds1 year4.5 out of 5 stars$
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Filterless Humidifier Types

If you are looking at purchasing a humidifier without a filter, there are a number of terms that you may come across to describe how they work. Although they generally fall into different price ranges, each type is built to be used in a specific application. These are listed below with a brief description of how each type of filterless humidifier is used. A full comparison, including price range, is in the table above.

1. Central Filterless Humidifier

This type of filterless humidifier is designed to be installed directly in your home’s heating or air conditioning unit.

2. Evaporators

The design of evaporators is simple – they are meant to do one job – they blow moisture into an area.

3. Impeller

Often referred to as a child-friendly device, impellers produce a cool mist.

4. Steam Vaporizers

Considered a choice for those on a budget, steam vaporizers use steam to improve humidity.

5. Ultrasonic

Using the same delivery method as impellers, ultrasonic vibration is used to produce the cool mist.

The Benefits of a Humidifier Without Filter

The obvious difference between filtered and filterless humidifiers is the filter. Not having to deal with regular filter replacements is one of the benefits of filterless technology.

Another is that, since these are cool mist humidifiers and there is no heater to heat the water and thus turn it into steam, the humidifier is quieter when operating.

Many filterless cool mist humidifiers contain antibacterial protection which combats the growth of bacteria which can be common in filtered models. As a result, a cool-mist humidifier can be better for your health. They are also equipped with different mist settings to provide maximum comfort.

Humidifiers – filtered or filterless – share one common benefit. They work to inject moisture into the air. What this does is improve humidity. Dry air, measured as having low humidity, can be hard on your health. Dry skin, difficulty breathing and itchiness can be caused and exacerbated by low humidity.

Do You Really Need One?

If your home or workspace is dry and it is causing you health problems, you may be much better off with a filterless cool mist humidifier. The conditions that can develop due to lack of moisture in the air include dry, itchy skin, cracked skin and lips, breathing issues and more.

Even if you do not have any of these issues, keeping your home or work area at a constant level of humidity can simply make your environment a more pleasant place to be. Not only will you feel good, normal humidity conditions are also good for your surroundings reducing the conditions that fungus and bacteria grow in.

What Features Should You Look For?

When you are shopping for the best filterless humidifier you need to first determine which type you require and can afford. You also need to consider the size of the space you are trying to regulate the humidity of. For a room or smaller area, you can use a portable tabletop style. For a home, you may have to have a unit installed with your heater or air conditioner for best results.

As for portable designs, you will want to look for ones that are child-friendly, easy-to-use with easy to read and understand controls and settings. Depending on your lifestyle you may want a unit that can run continuously but has an automatic shut off system. When water levels drop too low, an automatic shut off keeps the filterless humidifier from becoming damaged.

A large water tank, directional mist nozzle and multiple speeds may be useful features to consider for certain rooms or areas of your home. Timer settings or remote control may be options that can work for your specific setting as well.

One feature you should not compromise on is the warranty coverage. It is not uncommon to see 2-year warranties.

Review of Our Top Picks of Filterless Humidifiers

Pure Enrichment 1.5L Ultrasonic Cool Mist Humidifier

Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier

Using a 1.5-liter tank and ultrasonic cool mist technology, this filterless humidifier will provide continuous operation for up to 16 hours.

The mist nozzle can be pointed in any direction as it has a 360-degree design. There are also two different speeds to allow you to personalize where and how often you want the mist to be sent into the room or office you are using this product in.

When the water level reaches a certain point, this quiet humidifier will automatically shut off. It will also do this when the water tank is removed for refilling or cleaning.

There is an optional night light and Pure Enrichment has given this product a 2-year warranty.


Portable design allows it to be used in many different places
Mist volume released is a lot considering the size of the unit
Quiet operation
Designed with a stylish look that fits into any décor


Controls are not waterproof
Daily cleaning may be required in order to prevent mold formation
Nightlight may be too bright for some users

For more information on the Pure Enrichment Cool Mist Humidifier, click here.

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Pure Enrichment 1 Gallon Ultrasonic Cool Mist Humidifier

Pure Enrichment Ultrasonic Cool Mist Humidifier

Depending on the mist control setting used, this product will deliver between 10 and 24 hours of continuous operation using ultrasonic cool mist technology. The design of this filterless humidifier mister provides a longer mist stream which results in greater coverage and is rated for use in bedrooms or medium-sized rooms.

The manufacturer recommends using distilled water and mold growth is suppressed with an antibacterial material built into the unit. Quiet operation and automatic shut-off are handy features of this humidifier. The night light features a total of three different colors for mood enhancement (red, green, or blue).


Well built and leakproof
Quiet operation
Works well at increasing humidity levels in a room
Easy to assemble and operate


Some users that the unit has leaked
Can leave a residue
Distilled water is recommended for the best performance

For more information on the Pure Enrichment 1 Gallon Ultrasonic Cool Mist Humidifier, click here, and make sure you check out the short video below to see it unboxed…

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Ultrasonic Diffuser & Essential Oil Set

Ultrasonic Diffuser and Essential Oil Set

Using ultrasonic cool mist technology, this aroma diffuser can provide continuous operation, or use the 1, 3, or 6 hour timer options. It will hold a maximum of 400ml of water and can produce up to approx. 30ml of moisture each hour.

The unit has an automatic shut off which is activated when the water has been used up.

The visual design is unique in that a wood grain coating was used to give it a natural and rustic look that will fit well in any décor. This bundle also includes 10 essential oils which you will no doubt love to try.

The compact and portable design allows this diffuser to be used anywhere it is needed and the cap on top is easy to remove for refilling.

The quiet operation of this unit makes it a great companion for even the quietest of locations as it produces a fine and smooth mist.


Comes with two settings for increased coverage
Easy to operate
Works very well at adding moisture to the air and performs best with regular cleaning


Plastic wood covering may look cheap
Small capacity requires frequent refilling
Some consumers found the lid drips when removed for filling
Although promoted as having a quiet operation, some users find it a little loud at night

For more information on the Pure Daily Care Essential Oil Diffuser and Humidifier, click here, and also have a look at the video below to see it up close…

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ASAKUKI 500ml Premium Essential Oil Diffuser

ASAKUKI 500ml Premium Essential Oil Diffuser

This product uses the ultrasonic cool mist technology which improves air quality along with increasing the humidity. It has a 500ml water capacity which allows it to operate continuously for up to 10-16 hours.

There are settings for the seven different colors and each of the colors can be set for either bright or dim.

The timer has four different settings of operation. The oil diffuser automatically shuts off once the water has been used up.

The manufacturer also backs this product with a full 1-year warranty.


Compact size
Operates well at delivering mist into a room
Mist is delivered at an angle rather than straight up


The plastic construction makes it look cheap according to some consumers
Nighttime operation is louder than expected from a quiet humidifier

For more information on the ASAKUKI Essential Oil Diffuser, click here.

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Final Thoughts

There is no doubt that a filterless humidifier is good for your health and the health of others around you. If your home or workplace is dry during winter months or just has low humidity at all times, you can easily remedy that with a pick of the best filterless humidifier options we have outlined above.

If you intend to regulate the humidity in your entire home, you may want to consider a unit that is installed with your heating/air conditioning unit, such as a furnace humidifier.

If your plan is to just add comfort to a room or section of your living/working area, there are portable options available to you, as we have outlined above. These are not expensive and will pay dividends in a short period of time by improving the condition of the air you breathe.

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