Best humidifier without filter 2020

Looking for the best humidifier without filter? If you’re shopping around, read through our guide to learn about the different brands and models on the market and to find the best one for you.

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!

So which is the best humidifier without filter? Here are the top 5 we’ve found:

  1. Rosewill Ultrasonic Cool Mist Humidifier
  2. Honeywell HWM705B Filter Free
  3. Vicks Mini Filter Free Humidifier

We also answer some of the typical questions people have about buying a humidifier without filter:

-Can I use any humidifier without a filter?

-Do I need to use a humidifier in the summer?

-Which is the best humidifier without filter to buy

-Which is the best filter free humdifier for my baby?

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 humidifier without filter 2020

best filterless humidifiers


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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’s my list of the best humidifier without filters!

Filterless HumidifierFeaturesLatest Price
Pure Enrichment MistAire XL Ultrasonic Cool Mist Humidifier

1 gallon capacity
10 to 24 hours operation
Night light
Suitable for large rooms, nursery, office
Auto shut-off
Single or dual mist
5-year warranty
Check Latest Price
hOmeLabs Cool Mist Humidifier Diffuser
1 gallon capacity
Up to 30 hours operation
Suitable for baby room
Auto shut off
1h/4h/8h timer
High/low settings
Customizable humidity settings
Check Latest Price
Rosewill Ultrasonic Cool Mist Humidifier

1.3 gallon capacity
Up to 30 hours operation
LED night light
Suitable for rooms up to 250 sq feet
Auto shut-off
360 deg adjustable nozzle
Check Latest Price
Honeywell Filter Free Warm Moisture Humidifier

1 gallon capacity
Up to 24 hours operation
Check Latest Price
TaoTronics Humidifier

2 liter capacity
Up to 24 hours operation
Sleep mode
Suitable for baby nursery and bedroom
Auto shut-off
360 deg nozzle
High/Low settings
Check Latest Price

How to choose the best humidifier without filter

The most important thing to consider is that even though you don’t have to worry about buying and installing a filter, you need to clean a humidifier more often if it doesn’t use a filter.

The point of a filter is to keep the water and vapor as clean and germ-free as possible. The filter collects all the particles that can lead to bacteria and mold growth inside the unit. Not having a filter means that you don’t get this extra protection from allergens.

Does this mean you shouldn’t buy a filterless humidifier? No, it just means you need to take extra care when using one. Clean your humidifier at least once per week, and use filtered water if you have access to it.

Before choosing the best filterless humidifier, make sure you know the approximate size of the room you want to use the humidifier in. Will you be using the humidifier in a bedroom or in a living space? If it’s for a bedroom, you can get away with using a humidifier with a smaller water tank capacity. If it’s for a living room, I’d recommend a filterless humidifier with a larger water tank capacity.

Now let’s check out our best filterless humidifier reviews!


The HomeLabs cool mist humidifier is a great option for those wanting to use a humidifier in a baby’s bedroom.

I’ve chosen it as one of the best humidifiers without filters, because it has a very long run time of up to 30 hours! There is a water capacity of 1 gallon.

You can set a timer for 1 hour, 4 hours or 8 hours, and there are two variable mist options: high and low. There is also a sleep mode.

This is also a great humidifier for a baby or toddler’s nursery or bedroom because it has a child lock, great for added protection. There also isn’t a night light, which means that your child won’t be distracted by bright colored lights like the ones featured on other humidifiers.

If you like using essential oils, you can add a few drops of essential oils that will be diffused by the humidifier.

There is a water level indicator panel so that you can clearly see how much water is left in the tank.

The simple but elegant square design means that the humidifier suits any décor style.

Please contact the supplier directly for warranty information.

Features and Advantages:

Suitable for baby and toddler bedrooms

Has a timer with option for 1 hour, 4 hours or 8 hours

Has a water level indicator panel

Long run time of up to 30 hours

Has a childproof lock

Can be used with essential oils






Best cool mist humidifier without filter

Rosewill’s cool mist humidifier is one of the most popular on the market and is our best cool mist humidifier without filter!

I like it’s large capacity of 1.3 gallons, which, if run on the low setting, can operate up to 30 hours. It’s  best used in a room up to 250 square feet.

There’s an auto shut off feature which switches off the humidifier once it runs out of water, so you don’t have to worry about always having to check the water level.

The best feature of the Rosewill is that there is a 360 degree adjustable nozzle, so you can choose where you want the nozzle to point.

Contact customer service to find out warranty information.

Features and Advantages:

Can operate for up to 30 hours before needing to be refilled

Has auto shut off feature

Has a 360 degree adjustable nozzle






While most filter-free humidifiers are cool mist humidifiers, the Honeywell HWM705B is a warm mist humidifier that is filter-free.

It has a capacity of 1 gallon of water, and on the low setting can operate up to 24 hours.

There is no night light, however there is an illuminated power button, and a light that shines when it’s time to refill the water tank. The humidifier automatically switches off when the water tank is empty.

The Honeywell filterless warm mist humidifier is suitable for medium sized rooms, up to around 250 square feet.

There are two output settings available, so you can control the mist that is dispersed. The low setting means that the humidifier can run for longer before needing to refill it.

There is a 3-year limited warranty available.

Features and Advantages:

Is one of only a few warm mist humidifiers that don’t require a filter

Can operate up to 24 hours

Suitable for medium sized rooms

Two output settings available for better dispersion control

Limited 3 year warranty






Frequently Asked Questions

Filterless humidifier vs filter : What’s the difference 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.

Can I use a humidifier without a filter?

Yes you can, as long as the humidifier is one that’s made to be used without a filter. Not all humidifiers should be used without a filter. Most filterless humidifiers are cool mist humidifiers, because warm mist can create more allergens, mold and bacteria hence why they’re better used with a filter.

Do I need a filter for a humidifier?

Most humidifiers use a filter, but if you buy one of the humidifiers recommended in this post, you can use the humidifier without a filter.

Which brand of humidifier is the best?

This depends on a number of factors including the room size, your budget and the features you want. Most have an auto shut off feature, and many have a low or high speed function. Consider  how long the humidifier can operate for before needing to be refilled. For more information on choosing the best humidifier, read our post.

How do I pick a humidifier?

Read about humidifiers and the differences between them, and work out the room size that you want to humidify. Look at the budget you have available, the features of the different models and the warranty available.

Do cool mist humidifiers need filters?

No, most cool mist humidifiers don’t need filters. The cool mist humidifiers recommended in this post don’t use filters. You need to check each model to see if it requires a filter or not. Make sure you do your research on cool mist humidifiers.

Do you need to use a humidifier in the summer?

This depends on where you live- if you live in a dry climate with very hot, dry summers with little moisture in the air, you may want to use a humidifier in the summer. Humidifiers add moisture to the air and if the air in your home is very dry in the summer, you might want to use one. Humidifiers are also great for helping with asthma and allergy symptoms in the summertime.

Is it good to use a humidifier in the summer?

It’s great using a humidifier in the summer if you live in a very dry climate, as it can make the air less dry which helps if you have respiratory problems. It can make your home more comfortable.

What is the best cool mist humidifier to buy?

The best cool mist humidifier to buy is the one that has the features that you find important, holds enough water to keep the humidifier running for a decent amount of time, and has an auto shut off feature, which most do.

Can you sleep with a humidifier on?

Yes, you can sleep with your humidifier still running all night. If you want to buy a humidifier that can operate all night, make sure you choose one that has a high enough water capacity to be able to operate for longer hours.

Do cool mist humidifiers make the room cold?

Generally speaking, cool mist humidifiers don’t make the room cold. The amount of mist that is dispersed isn’t enough to make a room cold. However, some people prefer using a warm mist humidifier instead.

How do I clean my humidifier without filter?

You can use warm soapy water to wipe down your humidifier and also to rinse out the water tank and wipe down any dust. Vinegar is also a great natural ingredient to use when cleaning out your humidifier. Make sure your unit is unplugged from the electrical socket before cleaning, and do NOT immerse in water. Follow instructions in the manual you receive from your humidifier’s manufacturer.

Here’s a great video showing you how to clean your humidifier:


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.

Here are other blog posts that will help you with humidity in your home:

Best hygrometer to measure humidity levels in your home

Best humidifier for asthma

Best warm mist humidifier