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Reviews of the Best Small Room Humidifiers of 2022

Updated on March 29, 2022 by Joseph D. Nielson

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Dry air in small rooms can be a real nuisance. Not only can dry air at home or the office can create uncomfortable and unhealthy conditions for cold sufferers, allergy sufferers, and insomniacs, but it can also damage household items like furniture and musical instruments. Whether you’re dealing with breathing problems, chapped lips or cracked leather, a small room humidifier is a great way to add moisture to the air and resolve some of those issues.

The best small room humidifier does more than just moisturize the air. High-quality room humidifiers with warm mist also improve the air quality by decreasing the risk of germs and bacteria. With more moisture in the air comes relief from cold and allergy symptoms, including nasal congestion, dry cough, sinus pressure, and headaches. Additionally, with improved air quality comes peace of mind for health-conscious families. 

Our small room humidifier reviews include cool mist, warm mist, and oil diffusing humidifiers for summer months, winter months, and all year round. These are the humidifiers with the best features, best prices, and best output among humidifiers suitable for small rooms such as bedrooms, nurseries, and office cubicles. 

Have a look at our review of the seven best small room humidifiers and you’re sure to find one that fits the needs and style of your home or office.

Product ImageProduct NameTypeIdeal Room SizeWorking TimeTank CapacityView Latest Price
InnoGear Essential Oil Diffuser Cool Mist Humidifier
InnoGear Essential Oil Diffuser Cool Mist HumidifierCool Mist
Aroma
6 hours in intermittent mode, 3 hours in continuous mode 100 mLView Price
Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier
Pure Enrichment MistAire Ultrasonic Cool Mist HumidifierCool Mist250 sq feetUp to 25 hours1.5 LView Price
Everlasting Comfort Ultrasonic Cool Mist Humidifier for Bedroom
Everlasting Comfort Ultrasonic Cool Mist Humidifier for BedroomCool Mist
Aroma
Up to 500 sq feetUp to 50 hours6 LView Price
AquaOasis Cool Mist Humidifier for Bedroom
AquaOasis Cool Mist Humidifier for BedroomCool MistOver 24 hours2.2 LView Price
GENIANI Cool Mist Humidifier for Bedroom & Essential Oil Diffuser
GENIANI Cool Mist Humidifier for Bedroom & Essential Oil DiffuserCool Mist
Aroma
Up to 220 sq feet4 LView Price
LEVOIT Humidifier for Bedroom Essential Oil Tray
LEVOIT Humidifier for Bedroom Essential Oil TrayCool Mist
Aroma
Up to 376 sq feetUp to 40 hours4 LView Price
Portable Mini Cool Mist Humidifier
Portable Mini Cool Mist HumidifierCool Mist6 hours continuously, 12 hours intermittently500 mLView Price

7 Best Small Room Humidifier Reviews

Main Features:

  • 100 mL tank
  • Adjustable mist mode— 6-8 hours of intermittent use, 3-4 hours of continuous use
  • Whisper-quiet ultrasonic operation
  • Filter-free

The InnoGear essential oil diffuser and cool mist humidifier proves you can add moisture to the air, scent a room, and make a design statement all at once. This is hands down our favorite for most aesthetic humidifier and essential oil diffuser for small spaces. Its seven colored light options allow you to pick the color that best suits your space or alternate through all seven options for a fun, changing design. This cool-mist humidifier is a great choice for anywhere you want to add moisture, fragrance, style, and the benefits of aromatherapy to a room. 

This humidifier is elegant, easy to use, and includes great features, including intermittent and continuous mist settings and ultrasonic vaporizing diffusion technology. This technology diffuses without heat to keep all the incredible healing properties of your favorite essential oils intact so you can reap all the benefits of aromatherapy. 

Simply add a couple drops of essential oil to 100mL of water and enjoy up to 6 hours of fragrant mist. This humidifier and oil diffuser combo makes a great addition to living rooms, bedrooms, hotel rooms, wellness spaces, home offices, and workout spaces, as well as college dorms. This budget-friendly device makes for a great addition to any home and is also a great housewarming present or gift idea for a health-conscious friend, or anyone who loves a fresh, clean home.

nnoGear Essential Oil Diffuser Cool Mist Humidifier Small Powerful Design

Additional Features:

  • 7 color LED changing lights (green, dark blue, red, yellow, pink, light blue, white)
  • Automatic shut off 
  • Bright and dim light modes 
  • Two mist options: intermittent (30 seconds on/30 seconds off) or continuous 

Great Humidifier For:

  • Home Offices
  • Bedrooms
  • Nurseries
  • Spa or wellness studio
  • Workout Room
  • Living spaces
  • Dorm rooms
  • Hotel rooms and AirBNBs

Cons/Cautions:

This is a small humidifier, that while great, is not as powerful as some of the other humidifiers we’ve reviewed. It is really best for small rooms and spaces. Also, essential oils are not included and are not always suggested for shared workspaces. If your office is a scent-free environment, then you should opt for one of the other high-quality humidifiers we’ve reviewed that are suitable for offices.

Main Features:

  • Ultrasonic cool mist 
  • Up to 25 hours of continuous operation
  • 360-degree mist nozzle
  • 1.5L water tank

The Pure Enrichment MistAire cool mist humidifier is our top pick for adding moisture to the air year-round. The 360-degree nozzle makes it easy to direct the mist exactly where you need moisture and away from areas you don’t. This feature is excellent for directing moisture away from plants, fabrics, and electronics.

The tank is small enough that it will fit under the nozzle at your bathroom or kitchen sink, making it extremely easy to fill. The 1.5L tank holds enough water to run for up to 25 hours, meaning it can get you through the entire night. Additionally, it won’t disrupt you while you sleep since it runs so quietly. Choose to sleep in darkness or turn on the MistAire’s nigh light feature for a gentle, soothing glow. The device will automatically shut off once it’s run out of water, so you don’t have to worry about a thing. 

The device disassembles easily, so you can easily clean it between uses. Simply use the included disk cleaning brush to remove debris that can build up.

Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier Different Parts

Additional Features:

  • Quiet operation
  • Automatic shut-off
  • Night light function
  • BPA-free
  • High and low-speed settings
  • 5-year warranty
  • Comes with disk cleaning brush

Great Humidifier For:

  • Bedrooms
  • Offices
  • Nurseries
  • Rooms up to 250 square feet
  • Year-round use

Cons/Cautions:

This humidifier does not have an aromatherapy option. Adding essential oils to the tank will damage the device. If you are looking for a humidifier that can double as an essential oil diffuser, check out one of our many picks for the best humidifier for small rooms with essential oil trays or features.

Main Features:

  • 6L water tank
  • Filter-free
  • Up to 50 hours of continuous use
  • Cool mist
  • 30dB whisper quiet
  • Adjustable mist output

If your priority is creating a comfortable home environment and improving your overall well-being with a high-quality humidifier, then the Everlasting Comfort Ultrasonic cool mist humidifier is your answer! With this humidifier, you can also enjoy the benefits of aromatherapy by adding drops of your favorite scent to the essential oil tray for a soft fragrance that fills the room. 

It’s a hardworking home gadget with a 360-degree rotating nozzle and high mist output that effectively adds moisture to dry air for up to 50 straight hours before needing refilling. With this device, you can say goodbye to continually having to refill your tank! Its long run time combined with whisper-quiet operation makes this the perfect device for improving your quality of sleep. Light sleepers, babies, and pets can rest easily and undisturbed by loud humming or the sound of water drops, and the night light helps them see the home gadget and other surroundings at night. 

The Everlasting Comfort Ultrasonic humidifier is available at a mid-range price that offers great value for top features, and since it is a filterless humidifier, you will not have the ongoing cost of replacement filters.

Everlasting Comfort Ultrasonic Cool Mist Humidifier for Bedroom Features

Additional Features:

  • Essential oil tray
  • Automatic shut-off
  • LED night light
  • 2-year replacement policy

Great Humidifier For:

  • Nurseries
  • Bedrooms
  • Offices
  • Living rooms
  • Rooms up to 500 square feet
  • Health-conscious families

Cons/Cautions:

While this device is fantastic at humidifying the air, it doesn’t double as an air purifier. If you’re looking for an air purifier and humidifier combo, check out our reviews on those devices.

Main Features:

  • Cool mist
  • 360 ° rotating nozzle
  • 2.2L water tank
  • Over 24 hours of continuous use
  • Filter-free

If you live in a part of the country that experiences harsh winter weather, you’ve likely experienced the chapped lips, itchy skin, stuffiness, and static electricity that seems to persist when the temperature is cold, and the air is dry. Using a humidifier is essential for keeping the relative humidity in your environment above 43% to help you fight colds and stay healthy throughout the winter. 

The AquaOasis Cool Mist Humidifier is your one device solution for better sleep, easier breathing, and more comfortable living. With this one device you can say goodbye to your congested nose, snoring, dry cough, dry throat, and dry skin. By adding humidity to dry air, everything in your home will feel much more comfortable all year round.

The 2.2 litre tank holds enough water to keep running for more than 24 hours, meaning it can get you through your entire workday and throughout the whole night. Its quiet operation also means it won’t disturb you as you go through your daily tasks.

AquaOasis Cool Mist Humidifier for Bedroom In a Room

Additional Features:

  • Ultra-quiet— No humming, whistling, or crackling 
  • Multiple mist settings
  • Automatic shut-off
  • Comes with cleaning brush

Great Humidifier For:

  • Rooms up to 400 square feet

Cons/Cautions:

This humidifier does not contain an oil diffuser feature. Adding essential oils to the tank can damage the device.

Main Features:

  • 4L water tank
  • Humidifier and diffuser
  • 4 mist settings
  • Built-in sensor to automatically adjust humidity levels
  • 38dB noise level
  • Up to 18 hours
  • Filter-free

This is a high-end humidifier that will be effective for your small rooms. GENIANI users appreciate that the humidifier helps to alleviate allergy symptoms, congestion, sinus headaches, eye irritation, sore throats, and dry skin. 

This sleek and powerful design includes an easy top-fill tank that can hold up to 4 litres of water. The user-friendly top-fill design also makes it extremely easy to clean. Its design has even won awards for its ability to combine modern technology with a classic design. 

One of the best features of this device is its built-in intelligent sensor that automatically adjusts to keep your space at an optimal humidity level. You can also control the moisture speed automatically by choosing between the low, medium, or high settings. On top of being a highly effective humidifier, this device also doubles as an essential oil diffuser. Simply add a few drops of your favorite oil to the oil tray to fill your space with a fresh scent that can help you relax and relieve stress. 

This is one of the more expensive humidifiers that we reviewed, but it’s well worth the price for a humidifier that delivers so many features. This is a humidifier you’ll use and love for small rooms and offices all year long.

GENIANI Cool Mist Humidifier for Bedroom & Essential Oil Diffuser Feature

Additional Features: 

  • Low, medium, and high settings
  • LED night light
  • Top fill
  • Night light feature
  • Automatic shut-off
  • 2-year warranty

Great Humidifier For:

  • Nurseries
  • Bedrooms
  • Living spaces
  • Home offices
  • Rooms up to 220 square feet

Cons/Cautions:

As a more expensive humidifier, this may exceed your need and budget. Although this device is great for alleviating allergy symptoms, for individuals with extreme allergies or severe asthma, consider checking out the benefits of air cleaner vs air purifier.

Main Features:

  • Ultra-fine cool mist
  • Dual 360° nozzle
  • 40-hour continuous mist 
  • Aromatherapy feature
  • 25dB noise level
  • 4L water tank
  • Filter-free
  • Handle for easy transportation

If you’re in the market for a trusted, efficient humidifier that doesn’t leak and that is safe and easy to use at home, this ultrasonic humidifier is a great choice. It’s one of our favorite humidifiers for small to medium size rooms.

Set the humidifier on top of your desk or nightstand, turn the dual nozzles wherever you want the air to go, choose your mist setting, then sit back and enjoy clean air at home and breathe easier at the office. In addition to adding moisture to dry air with one touch of a button, you can also enjoy fresh-smelling rooms by adding a drop of essential oil to the essential oil tray. This unit runs for up to 40 hours and is a very quiet humidifier, so you won’t even notice it’s running. 

This humidifier has all the standard features you’ve come to expect from our reviews of humidifiers for small spaces. The large tank opening makes it easy to refill and easy to clean with the provided cleaning brush. The safety features and warnings make sure the unit doesn’t burn and that the air inlet is not blocked. This way, you can have the peace of mind that nothing will happen while you’re sleeping or if you have to leave the room. 

LEVOIT Humidifier for Bedroom Essential Oil Tray Spread Quick and Smoothly

Additional Features:

  • BPA-free
  • Quiet 
  • Easy to clean
  • Ultrasonic technology
  • Automatic shut-off
  • Comes with cleaning brush

Great Humidifier For:

  • Nurseries and children’s rooms
  • Home offices
  • Small to medium bedrooms 
  • Rooms with a square footage of up to 376 square feet

Cons/Cautions:

It’s not recommended to put this humidifier on the floor so if you’re not able to place the device on an elevated surface like a desk, tabletop, or nightstand, it may not be the right option for you.

Main Features:

  • Cool mist
  • 6 hours intermittent use, 12 hours continuous use
  • 500mL water tank

Tired of clunky humidifiers that take up tons of space and ruin the aesthetic of your space? Then the Portable Mini Humidifier is perfect for you! Its small design makes it easy to take anywhere so any and every space you’re in is perfectly humid. Because of its size, this device is easy to fill and clean. It’s also easy to store away when you’re not using it, so you don’t always have to be staring at a clunky device.

Though it may be small, this humidifier packs a punch. With two mist settings, it can run continuously for 12 hours or intermittently for 18 hours. Once the water tank is empty, the device will shut off automatically, so you don’t have to worry about the device overheating. 

This mid-price humidifier will make the perfect addition to your work-from-home setup. 

Portable Mini Cool Mist Humidifier Features

Additional Features:

  • Portable
  • Super quiet
  • Two mist modes— continuous and intermittent 
  • Automatic shut-off
  • USB plug-in

Great Humidifier For:

  • Travel
  • Bedrooms
  • Offices
  • Nurseries
  • Living rooms 
  • Kitchens

Cons/Cautions:

This humidifier does not double as an oil diffuser. Adding essential oils to the water tank can damage the device.

Buying Guide: Humidifier FAQs

white air humidifier spreading steam houseplant humidification dry air selective focus

Is a cool mist or warm mist humidifier better?

You may have seen reviews of cool mist and warm mist humidifiers and are wondering which humidifier is better. Whether a cool mist or warm mist humidifier is better depends on the climate you live in and the seasons you experience. 

A cool mist humidifier adds moisture to dry air but does not increase the temperature. A cool mist humidifier is also useful if the air is warm and dry. It’s a great choice for places with a warm or moderate climate year-round. 

On the other hand, a warm mist humidifier adds moisture and heat to cold, dry air. A humidifier with warm mist is useful during the colder winter months.

There are also humidifiers on the market that produce both cool and warm mist. These humidifiers are a great choice if you live in a city where you experience all seasons of cold, moderate, and warm weather. 

Is a filter or filterless humidifier better?

Our reviews of the best small room humidifiers include mainly filterless humidifiers. Filter-free humidifiers are an economical and sustainable choice in the long run but aren’t the best humidifiers for people with asthma as germs and bacteria are not filtered from the air. A humidifier with a filter will trap dust, germs, smoke, pet dander, and bacteria but will also be louder and require more cleaning than a filterless humidifier. Check out our reviews of the best air purifiers for smoke.

Ultimately, both options are great, it just depends on your needs and preferences. If you are looking for a humidifier with a filter, check out our best HEPA air filter reviews

How do you humidify a small room?

Humidifying a small room is very easy with one of the small room humidifiers we’ve reviewed. All you have to do is fill the water tank, plug in your device, and turn on the humidifier to feel the relief of moisturized air. 

You may also be wondering, will a small humidifier work in a large room? Each humidifier is a bit different and will be able to cover various sized rooms. Check your device’s manual to see how many square feet it can cover to determine whether your device will also be able to work in a larger room. 

If you’re not sure whether the air in your home is causing your allergies to act up or your skin to dry out, consider getting an air quality monitor. The importance of an air quality monitor cannot be overstated for ensuring you are in an environment with good indoor air quality.  

What causes fine dust from humidifiers and how can you avoid it?

A complaint that many people have about humidifiers is that they can cause a fine layer of dust to settle across your room. This problem, however, is extremely easy to solve. Because most of the humidifiers we’ve reviewed are filter-free, they’re not able to filter out the particles that are in hard tap water. If you find that your humidifier is causing dust, try using filtered water in your device instead of tap water. 

What’s the difference between a humidifier and a vaporizer? 

You may have seen both terms and are wondering what the difference is between a humidifier and a vaporizer. The difference is essentially the same as that between a cool mist and warm mist humidifier. A vaporizer is a humidifier that uses boiling water or steam to warm the air. Since a vaporizer, or warm mist humidifier, boils water, it’s better at eliminating germs and bacteria than a humidifier that only emits cool mist. Vaporizers are generally preferred by allergy and asthma sufferers. [1]

How do you clean a humidifier? 

It’s always best to follow the cleaning instructions provided with your appliance. Our humidifier reviews include mainly filter-free humidifiers that are easy to clean with the tools supplied. You can also use a simple cleanser of household vinegar which effectively dissolves calcium. It’s important to clean the humidifier regularly to avoid the buildup of mineral deposits that result from the use of hard tap water. [2]

Is a humidifier with aromatherapy good? 

Aromatherapy has many benefits. A humidifier that has the dual function of diffusing essential oils is a great way to get the health benefits of aromatherapy with one handy home gadget. Adding fragrance to your home or office with different essential oils can help you relax, focus, energize, and even produce positive memories. [3]

Joseph and Family
About Joseph D. Nielson

Former journalist and editor for various press groups, I now dedicate my time to reviewing products for the home and family life. When I get time to myself, I enjoy rock climbing, taking my dirt bike for a rip, and most importantly providing my family with the best home possible!