Best Filterless Humidifiers

If you are someone who’s struggling with allergies or asthma, you probably already know all the benefits of owning a humidifier. If you don’t have one, it’s most likely because you think they are hard to maintain or that the filters are expensive. However, did you know that when you buy some of the best filterless humidifiers, you won’t have to deal with these issues?

There are plenty of filterless humidifiers on the market in 2020. They are useful because they have many advantages compared to humidifiers that require filters, while still having most of the additional features. Sure, the more features, the higher the cost, but some of the best filterless humidifiers aren’t even that expensive. 

Below we have given you the list of top 7 best filterless humidifiers, as well as a short buying guide. We hope this article will help you find the best humidifier for all your needs and requirements.

Why Buy the Best Filterless Humidifiers?

A lot of people probably think that filters make your humidifier safer to use. The truth is, however, that modern technology has made filters unnecessary. They are usually just a way to make you spend more money.

For example, if you buy a warm mist humidifier, the heat that generates the steam will kill off any bacteria. This makes the mist perfectly sterile and safe. Even with the cool mist humidifiers, the filter is usually used simply to avoid that white mineral residue. This too can easily be avoided by only using distilled water or demineralization tablets or drops.

Also, all humidifiers should be cleaned weakly, so the cleanliness of the device isn’t affected by not using a filter. Keep in mind that most modern humidifiers are made of an antibacterial plastic that prevents the growth of any germs or bacterias.

What Features Should You Look for?

Not all filterless humidifiers are the same. Just like with any other product, some models are better than the others. As there isn’t a simple way to make one single product stand out, you should always make a list of features you want your humidifier to have. Here are some of the features all best filterless humidifiers should have.

Tank Size

Tank size is something that entirely depends on the customer. If you want to humidify a large room, or if you want your unit to work for a long time, it’s best to search for a model that has a larger tank. Also, larger tanks are usually easier to clean. However, large tanks are heavy, and this can be a downside.


When you spend your money on something, you’d probably want it to last for a long time. This is why you should always look for reliable models made with high-quality materials that can last for years. An extended warranty is always an excellent way to be sure that the desired model won’t break easily.

Built-in Humidistat

A built-in humidistat is one of the most important features any humidifier should have. This perhaps sounds like a reach, but the truth is, a humidistat is usually what allows you to set the humidity level. At the same time, this will allow the humidifier to maintain the chosen humidity level by turning off and back on.

Easy to Use

Typically, any humidifier is easy to use. You fill it with water, plug it into an outlet and turn it on. However, some humidifiers can have programmable stuff, which might complicate everything. The simpler the humidifier, the easier it is to use.

Easy to Clean

The whole point of having a filterless humidifier is not to have to maintain it as much as models with filters. This is why the best filterless humidifiers should be easy to clean. In other words, look for the ones that have a simple shape, without any nooks or corners that are hard to reach. The tank especially should be simple, as you don’t want any residue that you can’t reach and clean. Also, the tank opening should be broad, so you can reach your hand inside of it.


You’ll survive without a timer. It depends on you whether or not this is something you’d need. While timers can be useful features, if they are noisy or hard to use they might be a hindrance.

Essential Oils

This is another optional feature that might change your overall experience. Some people love essential oils; others don’t mind it. Most humidifiers aren’t suitable to be used with essential oils. Keep in mind that if you have a device that isn’t made to be used with oils or scented pads, you can seriously damage it if you add something for aromatherapy in it.


A nightlight is another feature that isn’t a necessity. Still, it can make the device more or less desired by most customers. It can come in handy if you want a beautiful decor or if you’re trying to find your way at night. On the other side, if the light can’t be turned off, you can’t use the device in your bedroom.


Last but not least, everyone has a certain budget when buying the best filterless humidifier. A lot of filterless humidifiers come at affordable prices, but there are some more expensive models. Luckily, when you buy a filterless humidifier you won’t have additional expenses, such as buying filters every few weeks. Never go overboard and try to be as close to the original financial plan you’ve made.

Top 7 Best Filterless Humidifiers

1. Honeywell HUL520L Mistmate Cool Mist Humidifier

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If you want to humidify a smaller room, this might be the right device for you. It can humidify up to 150 square feet, which isn’t a lot but it’s usually enough. This makes it an excellent device for personal use. Also, it can hold up to half a gallon of water, and it can run for 20 hours of continuous use. This is quite long-lasting for a personal humidifier.

This unit is reasonably silent, and only the most sensitive sleepers will find themselves annoyed with it. The tank has a wide opening so you can clean and refill it easily. The mist amount can be adjusted with a knob, and there is no self-timer or night light. It cannot be used with essential oils

Another useful feature of this device is that you can buy it in various colors.


  • Large tank opening
  • Quiet
  • The runtime of 20 hours


  • Small coverage

2. Everlasting Comfort Ultrasonic Humidifier for Bedroom

Amazon link

If you are looking for a large humidifier that can refresh the entire living room or the office, you might be satisfied with this product. This humidifier has some of the longest-lasting runtimes, and it can work for up to 50 hours! In other words, you can use this device for two days without refilling it.

It has a 1.6-gallon tank, which is a lot, but it is heavy, and it can be hard to clean. However, if you have some cleaning brushes, you won’t have too many issues with it. Also, this device is completely silent, and you can use it even for your bedroom.

The device has an optional nightlight that can be turned off, which is excellent. You can use it to get by at night, while also turning it off to sleep. At the same time, it has an essential oils tray so that you can use it for aromatherapy as well. All in all, this is one well-rounded model.


  • Quiet
  • Really long runtime (50 hours)
  • Has a nightlight that can be turned off
  • Can be used with essential oils


  • Hard to clean
  • It can leak

3. Vicks Filter-Free Ultrasonic Cool Mist Humidifier

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Believe it or not, Vicks is a company that is also famous for manufacturing humidifiers. In fact, its products are considered to be some of the best filterless humidifiers on the market. They come with that easily recognized Vicks menthol smell, so they are great if you are looking for a product that can make you breathe more easily when you’re sick.

This particular humidifier is excellent for smaller to medium-sized rooms, and it can work for up to 30 hours if set at lower misting settings. It has a 1.2-gallon tank, which is quite a lot. If you want to use it with essential oils, you should purchase Vicks’ scented pads, so that might be an expense. However, it’s easy to use, and it will work quietly so that you can place it in your bedroom.

In short, if you want to buy from a reliable brand, this might be the right device for you.


  • Quiet
  • Doesn’t have any leakage
  • Durable
  • Works with Vicks Vapor pads
  • Affordable


  • Can’t be used with essential oils, other than Vapor pads
  • Can’t cover larger rooms

4. LEVOIT Ultrasonic Warm and Cool Mist Air Humidifier

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The LEVOIT Ultrasonic humidifier is one of the largest products on the market. It has a capacity of 6 litres, and it can work continuously for up to 36 hours! A 12-hour timer can additionally measure this. You can also choose whether you’d want warm, soothing mist or cool, refreshing one. It has a built-in humidistat with a large, LED display, so you can continuously monitor the humidity levels.

If you are a fan of aromatherapy, you’d be happy to hear that this particular device also comes with a tray for essential oils. You can add scents in it for a completely relaxing experience. This unit is unique as it has a remote control, which means you can turn it on and off from the comfort of your bed.

The only downside is that this model isn’t as durable as some similarly priced ones. Leaks are common, but luckily you get a 2-year warranty so that you can fix all those issues for free.  


  • Can produce both warm and cool mist
  • Remote control
  • Built-in humidistat
  • Can be used with essential oils


  • Loud
  • Leaks are common

5. Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier

Amazon link

If you suffer from dry skin, this might be an excellent product for you. It has a simple design and a relatively small capacity of 1.5 litres, but it can work for up to 25 hours. Also, surprisingly, this model can cover up to 250 square feet of space, which makes it great for larger rooms such as bedrooms and living rooms.

If the design looks like it’s hard to clean, don’t worry. You’ll get special cleaning brushes with it so that you can reach every part of the tank easily. The model is simple and doesn’t have many features, but it does have a night light and two humidity settings. Also, it comes with an automatic turn off feature, so you can fall asleep knowing that it will stop working once the desired humidity levels are reached. At the same time, this keeps it safe from overheating or malfunctioning.


  • 5-year warranty
  • Easy to use
  • Comes with brushes for easier cleanup


  • Can’t turn off the nightlight
  • Can’t be used with any essential oils

6. Anypro Ultrasonic Cool Mist Humidifier

Amazon link

This filterless humidifier is one of the best selling models currently on the market. It is made of a high-quality plastic that has antibacterial features so that it can have a lot of health benefits. It has a large water tank of 2 litres, but the device still manages to be compact. It can run continuously for around 16 hours, which is decent, especially as it is made for humidifying larger rooms. Also, it has a rotating nozzle that can turn around for 360 degrees.

The device has an automatic turn-off feature, which makes it rather safe. As it is quiet as well, you can use it during the night without any disturbance. The model comes with a cleaning brush to ensure that everything is cleaned and mold-free. However, you cannot use essential oils with it, and it doesn’t have a night light or an internal hydrometer.


  • Compact
  • Good for larger rooms
  • Rotating nozzle
  • Durable and high-quality


  • Can’t be used with essential oils
  • Doesn’t have any special features

7. Rosewill RHHD-14002 Cool Mist Humidifier

Amazon link

If you are looking for some of the best filterless humidifiers at an affordable price, this might be the right model for you. It has a large water tank that can hold up to 5 litres of water. It is quiet and has an automatic shut-off feature, so it’s safe to use during the night. It has a two-sided rotating nozzle so that you can place it at any spot in the room and it can still cover everything.

The model comes with a nightlight, and the misting is adjustable. This allows you to have perfect control over the humidity levels. It is quiet, so you can even place it inside your bedroom. However, keep in mind that the nightlight can’t be turned off, which is a great turn-off. At the same time, it’s made of cheap materials, so you’d have to clean it regularly. For such an affordable price, though, this model has a great value-for-price balance.


  • Great for larger rooms
  • Automatic turn-off feature
  • Affordable
  • Quiet


  • The nightlight can’t be turned off  

Bottom Line

Finding the best filterless humidifier can help you with a lot of health issues. Also, with the help of essential oils, it can give you a truly relaxing experience. There aren’t many downsides to owning a filterless humidifier, so it is up to you to find the product that would work the best to satisfy your desires and requirements.

Keep in mind that everyone is unique and that what works for your friends might not work for you. Always have your own needs in mind when choosing best filterless humidifiers.

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