The Best Filterless Humidifier Reviews: Here’s Why You Need One

best filterless humidifier

Using a humidifier with an air filter often carries the risk of releasing minerals deposits, air pollutants, and white dust into your home. Thanks to technological advancements, we now have filterless options that reduce these risks.

Keep reading for our compilation of the 5 best filterless humidifiers and what you should be aware of when choosing between them!

5 Best Filterless Humidifier Reviews

1. Honeywell Designer Series Filter Free Cool Mist Humidifier

Honeywell Designer Series Filter Free Cool Mist Humidifier

The Honeywell designer series has a plethora of positive benefits as a cool mist humidifier; and because of this lands itself among the best. For starters, it doesn’t rely on filters to operate which saves you a considerable amount of money that would go towards filter replacement and maintenance.

The Honeywell is ideal for medium and large rooms, and thanks to its adjustable moisture settings it’s easy to set your preferred output release.

This humidifier runs great on silent mode without disrupting your sleep, and the rotating mist outlet lets you direct the moisture where you want it.


  • Cool mist.
  • No filter to replace or wash.
  • Variable mist control.
  • You can direct the mist anywhere you want it.


  • Low maintenance compared to humidifiers that uses filters.
  • Display blue light that lets you view the water level.


  • It’s a bit on the expensive side.
  • Does not feature automatic shut-off.

The Honeywell is suitable for either medium or large bedroom. Use the directional mist position to face wherever you want. It can run for up to 30 hours and operate with mild sound.

2. Homdox 1.6 Gallon Ultrasonic Warm and Cool Mist

How to choose the best filterless humidifiers

The Homodox humidifier comes with a series of robust features you won’t find in most filterless humidifiers. This unit delivers both cool and warm mist which is optimal for adjusting your preferences based on the time of year.

With a remote control, operating this unit becomes less toilsome and more convenient as you can operate it from six meters away. The dual mist system comes with a 1.6 gallon capacity that will last you through the night, and the shut-off function to protecst the unit whenever the tank becomes empty. This filter free unit also features a built-in water purifier to destroy any unwanted water organisms that may make their way into the reservoir.

You will also love the silent working mechanism of the Homodox Ultrasonic humidifer as it’s hardly audible above a whisper, allowing you to sleep soundly. For more features and customer reviews pertaining to the Homodox, check out the Amazon link below!

3. Ultrasonic Cool Mist Humidifier 1-Gallon Water Tank

 Ultrasonic Cool Mist Humidifier - Premium Humidifying Unit with Whisper-quiet Operation, Automatic Shut-off and Night Light Function

The ultrasonic cool mist humidifier XL disperses cool mist fast and efficiently. It can last for up to 10-24 hours at constant operation, depending on mist control settings, allowing you to breathe easy and get a good night’s rest.

It comes with optional night light that offers multi colored lights to add to your room’s scenic ambiance.

The one gallon tank capacity helps provide maximum coverage for large rooms up to 500 square feet, and it also comes equipped with an automatic shut off function.

The single and dual- mist nozzles helps you adjust the mist setting, and they are put in place to allow you to have extra control on over your comfort level.


4. Vicks FilterFree Humidifier

Vicks Warm Mist Humidifier

This is another warm mist unit without a filter produced by the folks at Vicks, but don’t be deceived by the similar appearance, it’s not the Honeywell piece we mentioned earlier.

The one gallon system boils water into vaporous steam before releasing the warm air into your atmosphere in a safe and bacteria free manner.

It comes with a convenient handle that facilitates easy carriage, and the featured bottom tank is able to drain out water completely preventing standing water when the unit is not in use.

With this unit you will enjoy warm moist air for up to 12 hours, a quiet operating mode and an automatic system shut-off when water level becomes too low. It also comes with a medicine cup where you can put Vicks vaporsteam to produce medicated mist if you so wish.


  • The machine provides cool mist.
  • Adjustable humidity control
  • No filter needed.
  • Has 1 gallon water tank.


  • One of the more affordable options on the market.
  • Good for both baby and adults.


  • No warning notifications about shutting down by itself when water level is low.

As previously mentioned, the Vicks humidifier is the least expensive but equally performs up to the standards of the rest. The cool mist it provides is great for babies and the grown ups, and it’s worth the consideration to invest in the Vicks FilterFree Humidifier


5. Honeywell Filter-Free Warm Moisture Humidifier

 Honeywell HWM-950 Filter Free Warm Moisture Humidifier

When hunting for the best humidifier without filter, you should definitely consider this 950 model from the household brand Honeywell.

With this unit, expect less cleaning and maintenance, due to the absence of a filter, and be ready to enjoy its great moisture output with virtually no disturbance.

It features a large water tank capacity which enables the filter free system to run up to 24 hours, and also a large tank opening which offers easy cleaning of the unit. This unit comes with two moisture settings to be adjusted at your preference. The Honeywell filter-less humidifier is ideal for medium room sized.

Other unique features include automatic shut-off, medicine port, and a refill indicator light, all with a great 3 year warranty!

6. Honeywell Easy to Care Cool Mist Filter Free Humidifier

Vicks FilterFree Humidifier

Here is another top rated filter-less humidifier to consider: the Honeywell HUT-220W, a great quality humidifier for small rooms and bedrooms.

This is another cool mist filter free humidifier designed with a circulating mist outlet. The HUT-220W works much the same way as watering the plants does as it evenly distributes and circulates moisture around the room.

With up to 46 hours working time, you won’t have to refill the humidifier very often, and it also comes with variable moisture settings just like the Honeywell Designer series above. And when its time for cleanup, the water bin is dishwasher safe making it all the more convenient.


  • Designed for small rooms like your bedroom.
  • Has a 1.0 gallon water tank.
  • Dishwasher safe
  • Has a variety of moisture settings.
  • 46 hours run time.
  • Automatic shut-off


  • Not pricey.
  • Worry free when a water tank is empty because the cool mist will turn off by itself.


  • It may not work efficiently in a larger room.

As a matter of comparison, the easy care cool mist has similar features like that of the designer series, but the auto-shut down function adds a perk in its favor. This unit is not suitable for bigger room sizes, and it’s use of evaporating mist means it does not produce white dust.

General Conclusion

We have successfully looked at 6 different filters less humidifiers along with each of their features, pros, and cons. You can now decide which filterless humidifier on this list meets your needs best and identify the one that falls into your budget.