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The Best Cool Mist Humidifiers in 2021

Cool mist humidifiers are best used for air moisturizing in hot days. This device can both cool down the heat and moistures the air. Check our review for the best cool mist humidifiers.

Best Cool Mist Humidifiers

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Should you experience itchy skin, sinus, cough, dry lips, and allergy issues, it would be better to purchase a humidifier to keep your house moist. You know, dry weather could lead to several difficulties of breathing, resulting in health problems. In this case, a cool mist humidifier could act as a helpful device to make the indoor air less dry.

Currently, cool mist humidifiers are available in two kinds, including evaporative and ultrasonic. To help you out in finding the most suitable product for you, we have compiled a list of the best cool mist humidifiers available now with complete reviews below.

Let’s check it out!

Quick Comparison Table

To provide you a quick look about our top three best cool mist humidifiers, we do a comparison table as follows. Check it out!

Product name
Water Tank Size Our Rating
Honeywell HCM350B Germ Free Cool Mist Humidifier1 gallon5.5-liter
Upgraded 2020 Top-Fill Humidifier 1 gallon4.3/5
Elechomes Warm and Cool Mist Humidifiers5.5-liter4.4/5
LEVOIT Humidifiers for Bedroom1.8-liter4.4/5
Pure Enrichment HumeXL 1.3-gallon4.5/5

Best Cool Mist Humidifiers in 2021

1. Honeywell HCM350B Germ Free Cool Mist Humidifier

Best Overall
Honeywell HCM350B Germ Free Cool Mist Humidifier

We consider the Honeywell HCM350B as the best overall cool mist humidifier at all. The first reason for this evaluation is that this device stands out with the ability to add mist to the dry indoor air at your house in a super silent way. You could hardly find a product that could beat this option when it comes to silent mode.

Besides, the machine could run up to 24 hours on low with a 1-gallon tank. It is an excellent choice for medium-sized rooms and bedrooms.

Plus, we are impressed with this humidifier because it features an exclusive technology that can kill 99.9 percent of bacteria in water. Additionally, it comes with three “easy-to” features – easy to carry, easy to fill, easy to clean, which enhances its customer experience when using this machine.

Furthermore, the Honeywell HCM350B also outweighs other products when it comes to the ability to keep the air humidity levels. This machine could remain 40-60% of humidity for your house, which brings various benefits. First of all, it could help relieve cough and congestion temporarily as it limits the presence of flu viruses in the air and surfaces.

Plus, this level of humidity could protect the wood furniture from losing moisture and shrinking. You might not know this, but significant changes can cause cracking and warping for your furniture.

Another benefit of this machine is that it can help you get a better breath and more comfortable sleep as reasonable humidity keeps nasal passages and throat hydrated.

Last but not least, by adding moisture to the dry air, the humidifier could cut down the risks of static shocks as well.

It is safe to say the Honeywell HCM350B is the best overall choice for children, babies, and adults. We do not have any complaints about this product.

2. TBI Pro 6L Ultrasonic Humidifier with Top-Fill

Best Quality
[2-IN-1] Top-Fill 6L Ultrasonic Humidifier for Large Room, Home, Baby Bedroom - Cool Mist 360° Air Nozzle - LED Display, Easy to Clean Portable Humidifiers & Upgraded Anti-Leak, Auto-Off (1.6 Gallon)

If you are into the market for a humidifier for big rooms, the Upgraded 2020 Top Fill might be the right choice for you. While the first option is suitable for medium-sized rooms, this machine can offer coverage of up to 750 sq ft with a tank capacity of up to 6 liters.

We believe that this product will not let you down when it comes to adding moisture to the air. Plus, the machine comes with three mist level settings, including low, medium, and high output, making it easy to change the mist’s speed based on your preference and offer free breathing.

Plus, the machine comes with a high-quality filter for water decarbonization, which helps prevent the salts in tap water from spreading in the rooms. Accordingly, you could breathe fresh air with no impurities and then have your health improved.

Similar to the first option, this product also delivers an indoor humidity level of 40-60 percent. You know, thanks to that, the humidifier could limit the number of flu viruses in the air and surfaces.

Another plus point that this product is better than many other machines is that it comes with a special sleep mode. It only creates a noise of less than 30dB. Thereby, you can rest assured that you can sleep well while it is still working.

If you are suffering from one of the following issues, including coughing, dry skin, and allergies, this machine might be the ideal choice for you, which can help you solve the problems mentioned above easily by maintaining the humidity level of under 43 percent.

Furthermore, you will love it as it comes with a timer. Accordingly, you will not need to do anything but pressing the start button. This timer could configure the machine for a particular time and turn it off automatically when the time ends.

Nevertheless, the machine appears not to be perfect at all. The first letdown of this humidifier is that its display only shows Celsius, which might be an inconvenient point for some users. Also, it doesn’t save previous settings as well. Therefore, when you turn it on, you will have to reset it again.

3. Elechomes SH8820 Top Fill 5.5L Humidifier

Best Warm And Cool Mist Humidifier
Elechomes Warm and Cool Mist Humidifiers, SH8820 Top Fill 5.5L Humidifier for Large Room Bedroom Plants with Remote Control, 20db Ultra Quiet, LED Display, 600ml/h Max Humidity, Auto Shut-off, White

The difference of the Elechomes Ultrasonic Humidifier from other products on our list is that it works as both a warm and cool humidifier. Therefore, you could use it for the whole year. While the machine unclogs sinuses and soothe scratchy throats in the winter, it can keep your skin moisturized, and your body cool in the summer.

Plus, this humidifier is designed for big rooms with a 5.5-liter tank. Therefore, you can rest assured that you will not have to fill it frequently and stay comfortable with this humidifier all day and night.

Another breakthrough feature of this product is its dual 360-degree rotatable spray nozzles, which could pump out to 600ml per hour.

Also, an internal humidity sensor that allows the precise control of humidity from 30 percent to 80 percent is a point that helps this humidifier rank higher than the rest products.

What we are also impressed with it is that in sleep mode, this machine only produces noise at 20db, which even outweighs the second option.

Last but not least, this product comes with filters that could be replaced easily. Therefore, you could install fast and reduce the white dust, guaranteeing cleaner and healthier air.

That said, this humidifier still needs to get improvements in several points. For instance, we find that it occasionally stops working suddenly for no reason, which is definitely a letdown for us. Also, it is slightly difficult to clean the humidifier. Therefore, you will need to put a little more effort into making it clear.

4. LEVOIT Dual 100 Humidifiers for Bedroom

Best Cool Mist Humidifier For Bedroom

If you are seeking an affordable humidifier to add moisture to the air in your house, the LEVOIT Ultrasonic humidifier might be the right choice for you.

The machine stands out with its smart sleep mode, which turns off lights and uses an in-built humidity sensor to keep a comfortable moisture level for your best sleep. Plus, it only generates little noise at under 28 dB. You might not know this, but this level is even more silent than a library.

Notably, thanks to an exclusive technology called Dual 100, the machine can work as a humidifier or a diffuser. Therefore, you could pair the mist of the humidifier and essential oils to spread your fragrances in the rooms.

Furthermore, you will love this humidifier as it allows you to add water into the tank directly. Also, it is easier to clean than other traditional humidifiers.

Besides, the LEVOIT ultrasonic humidifier is also different from other models with Spiral Air Duct tech. Thanks to this feature, the machine can turn water into an ultrafine mist that could spread in a big space in a short time with no wetting the floor or fogging the room.

Moreover, you can rest assured that it is entirely reliable and safe as it is both CA65 tested and BPA-free ETL listed. The machine could shut down automatically when the water level is low, and the tank is removed.

That said, the humidifier comes with a little small water tank. You might feel a bit irritated when having to refill it frequently. Moreover, it isn’t as powerful as the above models to deliver a humidity level of 40-60 percent in winter.

5. Pure Enrichment HumeXL Ultrasonic Cool Mist Humidifier

Best Cool Mist Humidifier For Large Rooms
Pure Enrichment HumeXL Ultrasonic Cool Mist Humidifier
Pure Enrichment

Our last pick, the Pure Enrichment HumeXL, is one of the high-end humidifiers of the brand Pure Enrichment. It is a dual mist ultrasonic machine that can serve big areas with a 1.3-gallon tank.

Plus, it also stands out among other machines with the ability to produce up to 50 hours of consistent mist output at the low setting and 16 hours at the high setting. Therefore, you will not have to worry about this machine’s performance as it offers complete comfort for your house and rooms all day.

Moreover, it can direct two 360-degree mist nozzles rotating in different directions for wide room coverage or in similar directions for stronger steam output.

Notably, it also features whisper quiet mechanism that could suppress noise significantly, which is a great choice for office and nursery.

Furthermore, you will be into it as it could provide you a great sleep thanks to night mode. All you need to do is to turn on the mode to dim LED lights, and it will turn the lights off while you are sleeping.

It is safe to say this product is a high-quality humidifier with high durability. That’s why the manufacturer is generous to provide customers a five-year warranty. Thereby, you could rest assured when using this product for your spaces.

Besides, you also get a remote control when buying the product, which further boosts its convenience.

Nevertheless, it is no surprise that the HumeXL is one of the most expensive models. In addition to its high price tag, this product also has several problems of leaking as well.

Top Brands For Cool Mist Humidifiers


Honeywell is a U.S company specialized in producing industrial products, engineering services, and especially aerospace systems. This is a prestigious and well-known business that is considered one of the Fortune 100 companies. Honeywell possesses many brands that customers might recognize, comprising of Garrett turbochargers and home thermostats. Additionally, Honeywell also produces sensors, air cleaners, dehumidifiers, and security alarm systems. The manufacturer licenses the brand name for use in numerous retail products produced by other providers, consisting of air conditioners, fans, heaters, home generators, and so on.


Elechomes is a high-end manufacturer of intelligent home appliances that provide an innovative lifestyle upgrade for better health, wellbeing, and comfort. The producer is famous for its award-winning innovation like Thermospread tech, Decade Katana titanium-made blades.

The value of the brand is defined by versatile technology and quality craftsmanship. It focuses on the production of humidifiers, air purifiers, kitchen appliances, and products for babies and parents. After years, the brand has gained much loyalty from customers who have used its products.


Another familiar name in the home appliance industry is LEVOIT. This US-based manufacturer stands out with incredible product design as well as breakthrough innovation. By providing durability, versatility, functionality, and elegant design in its products, the brand has been trusted by various customers around the world. Notably, LEVOIT’s popularity has been higher thanks to its award-winning air purifiers and new app introduction. The manufacturer is quite confident in providing its customers with a quality and comfortable environment at their home.

Pure Enrichment

It is safe to say Pure Enrichment is a top manufacturer of high-end home, wellness, personal care, and health products. This business commenced with unique air purifiers and has been growing from there. The brand is driven by the motto “Pure & Simple.” Along with air purifiers, Pure Enrichment also offers numerous series of products aimed to improve people’s daily life. The products of this manufacturer are crafted meticulously to meet the best quality and design standards from cosmetic care, purification systems, aromatherapy, and relaxation.

Buying Guide When Buying Cool Mist Humidifiers

Cool mist humidifiers are the most common humidifier selection on the current market. People intend to prefer them to warm mist humidifiers as they are more affordable, provide better coverage, and are quite easy to clean.

There are two main kinds of cool mist humidifiers, evaporative humidifiers, and ultrasonic humidifiers. They both have their pros and cons. Let’s see what they are.

Evaporative type

An evaporative cool mist humidifier gains the highest popularity as its price is reasonable and can work for a long time. It comes with a wick filter for absorbing the water as well as removing impurities to ensure clean air released.

It also requires frequent cleaning to avoid the presence of mold. Plus, you should keep in mind to replace filters, which, of course, adds to the overall cost of owning a machine. A drawback of an evaporative humidifier is that it is noisier than an ultrasonic one. This will somehow affect the sleep of people if they put it in their bedrooms.

Ultrasonic type

An ultrasonic humidifier is for those who want to avoid the noise generated by the evaporative humidifier. This type of humidifier comes with a diagram vibrating fast to turn water into mist. Thereby, you will not have to replace the filters frequently.

Yet you surely still need to get the water tank refilled and cleaned. Another plus point of this type is that it uses less energy than an evaporative machine.

Nevertheless, an ultrasonic humidifier’s main drawback is that its procedure used to generate mist also releases white dust, which could spread around your rooms. This will be a big problem for those who have asthma, allergies, and other respiratory problems.

What to Consider When Buying Cool Mist Humidifiers?

You have known our best cool mist humidifiers. Yet, there are several critical points that you should know before making the final decision. These factors could help you determine which device is the most suitable one for you.

1. Mist

The initial factor that you need to consider is how much mist a cool mist humidifier releases. Should you be buying it in a cold season, you might want it to release as much mist as possible in the heated areas. Meanwhile, if you only want a little office air to reduce the dryness, it would be best to seek portable humidifiers that release enough mist to maintain your indoor moisture.

2. Sound

Indeed, you would want your device to operate silently. If not, you could feel irritated when hearing the sound released by the humidifier. Thereby, you should check the product in question whether it features a silent mode so that you can use it in the bedrooms.

3. Water capacity

To ensure that you could use your humidifier all day, you should check whether it comes with a big enough water capacity to work in a day without any problems.

4. Durability

Another crucial factor that you should keep in mind when buying a humidifier is the durability of the device. We are pretty sure that you will not want to add any additional cost in repairing a device that breaks after a short time of use.

5. Price

Buying cool mist humidifiers could cost you a small fortune, especially when you want to remove the dryness for your whole house. Thereby, make sure the device in question comes with a reasonable price tag. If you do not have any budget restrictions, you could go for any products that you think are actually a true investment.

6. Maintenance

Irrespective of what kind of humidifiers you’re using, it still requires maintenance to operate accurately. It is crucial that you should clean the device to avoid the growth of mold and bacteria. Also, you will need to get the water tank refilled every time it runs out of water.

Plus, for an evaporative humidifier, you should keep in mind to change the filter to limite dirty mist to the minimum level. Meanwhile, for an ultrasonic humidifier, you should do more cleaning around your rooms to handle white dust produced by the machine. You should think about what kinds of maintenance you are more likely to handle rather than others.

7. Space

Most affordable cool mist humidifiers are designed to add mist to small spaces. Therefore, to cover big areas, you need to seek devices that could provide enough moisture for big spaces. To know whether the humidifier in question is able to cover large rooms, you should check its specifications carefully. In this care, if it comes with a coverage of 500 – 1,000 sq ft, it might be an ideal choice for your big rooms. And should you want to buy a product that could cover your whole house, you should buy a humidifier that tackles more than 1,000 sq ft.

8. Adds-on


If you do not want your machine running every time, it would be best to set a timer that will turn the humidifier on and off automatically in specific times of a day.

Auto Shutoff

Some machines will shut off automatically when the water in the tank is too low or when the humidity level in the room is desirable.

Combination model

You can buy a humidifier that offers both cool mist and warm mist settings. Therefore, you could easily use it in different seasons.

Adjustable output

This feature will allow you to decide the level of humidity you want your space to get. If you are worried about your machine to make everything too humid, this feature will help a lot.


What is white dust?

White dust refers to the mineral content found in tap water or hard water used in an impeller or ultrasonic humidifier. When the mist from the machine using tap water lands on surfaces of the rooms, it leaves a thin white film called white dust.

For healthy people, it does not cause any problems. But, it might be a trouble for those suffering asthma, allergies, and other respiratory conditions.

How can I prevent white dust?

To avoid the white dust, it would be best to use demineralized or distilled water for the humidifier. However, it might cost you an arm and a leg. Another choice is to buy a demineralization cartridge for the humidifier as it can trap minerals before they are released to the air. On the other hand, you could go for an evaporative humidifier that comes with the wick filter removing minerals from the water before producing it into the room.

What is an ideal water tank?

This depends on the preference and demand of each person. That said, in general, a 1-gallon tank capacity would be best. With this capacity, the humidifier could run for 30 hours before being refilled. Certainly, the duration also depends on the brand and the model of your humidifier. That’s why you should check these numbers before making the buying decision.

What is the difference between a bottom-fill and a top-fill water tank?

While you need to turn upside down a bottom-fill tank to refill as the opening is in the bottom, a top-fill tank allows you to refill directly as its opening is at the top.

Final Thoughts

So that’s all we want to share with you in today’s article about the best cool mist humidifiers. In a nutshell, cool mist humidifiers play a crucial role in making your space more comfortable by providing moisture to the air.

Have you decided to go for any humidifier? If yes, we hope you would have a great time with it. If not, we suggest you consider our first option – the Honeywell HCM350B Cool Mist Humidifier. Not only does it provide ideal humidity to your rooms, but it could also kill 99.9 percent of bacteria in the air. Plus, it comes with a super silent operation so that you could put in your bedroom for a night of better sleep.

By the way, if you have any other ideas, do not hesitate to let us know in the comment box below. Thank you for reading!

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