Best Filterless Humidifiers

The ongoing cost of replacing filters for humidifiers can put many people off buying a humidifier. If you’re wanting to buy a humidifier without filter, the great news is that it’s possible! No more having to replace filters every few months!

Home Health Living has researched filterless humidifiers that are currently on the market and have come up with a top 3 list. We share with you our reviews of the best cool mist humidifiers without filters to help you make the best choice. If you’re wanting to read more information or check prices for these humidifiers, please click on the product links.


Best Filterless Humidifiers

A humidifier in your home helps to alleviate many health problems associated with dry air. Adding moisture to the air in your home helps prevent dry skin, nose bleeds, dry coughs, and alleviates snoring. With some humidifiers, you can add a few drops of essential oils for extra health benefits and a pleasant aroma.

Here are our top 3 of the best humidifiers without filters.


SereneLife Cool Mist Ultrasonic Humidifier for Home and Office – No Noise, Filter Free and Adjustable Vapor – 2.5L

Home Health Living recommends the SereneLife cool mist ultrasonic humidifier, not only because it is filter free but also because it has quiet operation. This is important for people who are light sleepers and cannot sleep with noise in a room.

The unit has a capacity of 2.5 liters, and it has a water tank that can be easily refilled once the water runs out.

The amount of cool mist that is dispersed can be controlled via the control knob on the unit. You can have a strong or gentle mist.

The unit shuts off automatically once the water has run out, but it lets you know with a red light indicator instead of the beeping sounds that other humidifiers make.

Rosewill Black Quiet Operated Filterless Ultrasonic Humidifier with 360° Adjustable Dual Nozzle Mist Outlet (RHHD-14002)

The Rosewill ultrasonic humidifier does not have a filter, and it’s 5 liter water capacity makes this humidifier great to use overnight.

It has a blue light which stays on while the unit is operating. Ultrasonic technology means that it is very quiet, which is great for those who prefer to sleep in complete silence.

What we like about this humidifier is that it has a 360 degree adjustable nozzle, so that you can choose which direction the mist will flow out.

There is an auto shut-off feature which means that when the humidifier runs out of water, it shuts off automatically.

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

Pure Enrichment’s ultrasonic cool mist humidifier is a long-running humidifier that works without a filter.

It has a 1.5 liter water tank capacity and can run up to 16 hours, making this an ideal unit for those wanting long operation. It shuts off automatically once the water runs out.

It has a dual control so you can choose the amount of mist that is dispersed. You can also rotate the nozzle 360 degrees to choose the direction of the mist.

The Pure Enrichment humidifier has a night light that can be switched off. If you are wanting a quiet operating humidifier, then this is a great option for you.

What are the differences between a humidifier with a filter, and a humidifier without a filter?

The main difference between a humidifier with a filter and a humidifier without a filter is the ongoing cost. A humidifier without a filter means you don’t have the ongoing cost of replacing filters. But you will usually pay more to purchase a humidifier without a filter than one with a filter.

While not having a filter in your humidifier will save you money in the long run, you need to ensure that you clean your humidifier on a regular basis. It is recommended that you change the water inside the humidifier each day.

Once a week you should clean the unit using vinegar, to remove any potential mold, germs or dust.

Humidifiers with filters do not have to be cleaned as often as those without filters.

Another difference is that humidifiers without filters tend to disperse more dust and other contaminants into the air. This is because there is no filter within the humidifier to filter the contaminants before they are dispersed.

As discussed in our post HERE, our water contains many different particles and contaminants. One way to remove these is to filter your drinking water. If you do not use a filter for your drinking water, then the water that you put into your humidifier will contain these particles. In a humidifier without a filter, they will be dispersed into the air. Sometimes this results in a white dust from the mineral deposits found in the water.

This will not be an issue if you already use a water filter that can filter out minerals and other fine particles. If you are interested in finding out more about water filters or want to purchase one, you can do so via THIS LINK.

One final difference between a humidifier with a filter and a humidifier without a filter is the operation noise. Most humidifiers with filters use a fan within them to cool the water down, and so are noisier than those without. Most humidifiers without filters do not have this fan, and so are quieter.

A Humidifier With A Filter Or A Humidifier Without A Filter: Which Is Better?


A humidifier with a filter is better for those with respiratory problems who do not use a water filter in their home. This is because the mold, bacteria, germs and dust is filtered out before the mist is dispersed. This is not an issue if you already use a water filter in your home.

A humidifier without a filter is better suited to those who prefer a quiet operation, such as when it is being used in a baby’s nursery or a child’s bedroom. It is also better suited to those who do not want to pay the ongoing costs associated with replacing filters. The negative aspects of having a humidifier without a filter can be eliminated by using a water filter in your home.

Disclaimer: This post contains affiliate links. If you make a purchase via these links, we may be paid a small commission at no extra cost to you. Thank you for supporting our family!


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