10 Best Ultrasonic Humidifiers of 2021 Compared & Reviewed

Best Ultrasonic Humidifier
Photo: Homedics

The ultrasonic humidifiers are the types that will use ultrasonic vibrations to create some tiny water droplets using the water in the built-in tank. These machines then spread the water droplets to the surrounding air.

With the best ultrasonic humidifier, you will also get a quieter humidifier that will allow you to sleep peacefully even when in operation.

These humidifiers will deliver a visible mist instantly to ensure you can humidify your room fast, and they also don’t require filters, which makes them cheaper to operate.

If you are on the market for an ultrasonic humidifier, here we help you pick the best one with reviews and comprehensive buying guide.

What To Check Before Buying Ultrasonic Humidifier?

How to Buy the Best Ultrasonic Humidifier
Photo: Miro

1. Power of Ultrasonic Humidifier

Your ultrasonic humidifier needs to be powerful enough to ensure it can humidify your home or room adequately. An underpowered model will not only be inefficient but will also consume more energy without doing any significant humidification.

When looking at the power rating, you will also need to consider your current setup and choose a machine that can work with it. You do not want to have to spend more money working on your electrical installation just to be able to use a humidifier.

Most of these units will have a 110-220V, 50/60 Hz rating or something close to this, which should be good enough for use in any house.

2. Coverage Area

Besides being powerful enough, the best ultrasonic humidifier also needs to have a wide enough coverage to ensure your room will be humidified adequately.

The good news is that these machines will come in different models with varying coverage areas from 100 square feet to over 1,000 square feet.

If you want something for use in a small to medium room size, coverage of 250 square feet like you get with the Pure Enrichment PEHUMIDIF should be enough. But, for medium to large rooms, the 700 square feet coverage you get with the Air Innovations MH-901DAis perfect.

3. Ultrasonic Humidifier Tank Capacity

The tank capacity determines both the continuous runtime that the machine can deliver and the amount of moisture it can put into your air.

Models with larger tank capacity like the 1.6-gallon tank on the Air Innovations MH-901DA will provide longer run times as this particular unit will run for up to 100 hours on a single refill.

While still on the tank, you should also make sure that besides a more substantial capacity, the tank also has a wide opening for easy refilling and cleaning.

4. Build Quality

Overall build quality determines the durability of the humidifier and is hence also a crucial factor to take into account when shopping.

Although there are a few that will have a stainless steel housing, most have plastic ones. For the plastic units, it is essential to make sure that it is heavy-gauge enough for maximum durability and is BPA-free to make it safe.

Also, check the quality of other things like the control knobs, lid and other humidifier components and make sure they are durable enough.

5. Noise Level of Ultrasonic Humidifier

One of the most significant advantages of the ultrasonic humidifiers is that they run more quietly when compared to other types.

However, the level of noise still varies from one model to the other. Hence, it will be vital to consider the specific noise rating of the machine when shopping.

If you intend to use the device in your bedroom, you need something with a sleep mode or low setting with a noise rating of under 30 dBA. For other spaces in the house, a noise rating of under 60 dBA will be preferable.

Read More: The Best Quiet Humidifiers

6. Maintenance

Cleaning and maintenance are an essential part of owning a humidifier. With that in mind, any model that you choose should make things easy for you.

Those that will include an easy-to-remove water tank, have an easy to wipe clean surface and come with detailed maintenance instruction will be the best buy for you.

10 Best Ultrasonic Humidifiers Reviewed




Levoit LV600HH

1. Levoit LV600HH (Best Overall)

  • 753 square feet coverage
  • Warm and cool mist settings
  • Built-in sensors
  • Remote control
Crane EE-5301W

2. Crane EE-5301W (Best Budget)

  • Smaller price tag
  • Variable speed settings
  • Adjustable 360-degree mist lid
  • Easy fill tank
Vicks V4600

3. Vicks V4600 (Best Brand)

  • Efficient top brand humidifier
  • Adjustable mist control
  • Dual scent pad slots
  • Wide tank opening
Pure Enrichment PEHUMGRY

4. Pure Enrichment PEHUMGRY (Best Cool Mist Technology)

  • Ultrasonic cool mist technology
  • Sleep-friendly features
  • Touch button control
  • 360-degree mist nozzle
Pure Enrichment PEHUMIDIF

5. Pure Enrichment PEHUMIDIF (Best Compact)

  • 8 x 6 x 9 inches compact humidifier
  • Optional night light
  • 360-degree mist nozzle
  • Auto shut off
Air Innovations MH-901DA

6. Air Innovations MH-901DA (Best Large)

  • 1.6-gallon capacity tank
  • Up to 100 hours runtime
  • Antimicrobial tank
  • Dual direction nozzle
Pure Enrichment PEHUMLRG

7. Pure Enrichment PEHUMLRG (Top-Rated)

  • Highly rated humidifier
  • Dual mist nozzle
  • Variable mist control
  • Optional night light
Pure Enrichment HumeXL

8. Pure Enrichment HumeXL (Easy to Operate)

  • Simple touch button control
  • Up to 50 hours runtime
  • Two independent nozzles
  • Extra-large tank opening
Miro NR07G

9. Miro NR07G (Convenient Top-Fill Design)

  • Simple top-fill design
  • Elegant, modern style
  • 600 square feet coverage
  • Extremely quiet operation
Homedics UHE-CM65

10. Homedics UHE-CM65 (Versatile 2-in-1 Design)

  • 2-in-1 design for use as humidifier and purifier
  • 65-hour runtime
  • Antimicrobial technology
  • Built-in nightlight

1. Levoit LV600HH – Best Overall

Levoit LV600HH

Photo: Levoit

  • Power: 120V, 60Hz
  • Coverage Area: 753 sq. ft.
  • Tank Capacity: 1.5 gallons
  • Runtime: 36 hours

With more extensive coverage of up to 753 square feet and a relatively longer runtime of up to 36 hours, the Levoit LV600HH is our best overall ultrasonic humidifier.

Another thing that gives it an edge over most others on our list is that it has a setting that allows you to choose whether to use warm or cool mist. Cool mist helps keep your skin hydrated, while the warm will ensure the water is free of bacteria.

Because this machine has built-in sensors, it will sense the humidity levels and adjust automatically to ensure they are always optimal. And with the convenient remote control, the operation will be a breeze.

There is no carry handle on this machine, which can make it a little hard to grasp and carry. But, the good news is that it is relatively compact and not that heavy, and so it should be easy to move around.


  • Wider coverage
  • Has both warm and cool mist
  • Adjusts humidity automatically
  • Convenient remote control
  • Relatively longer run time


  • No carry handle

2. Crane EE-5301W – Best Budget

Crane EE-5301W

Photo: Crane

  • Power: 120V, 60Hz
  • Coverage Area: 500 sq. ft.
  • Tank Capacity: 1 gallon
  • Runtime: 24 hours

Crane EE-5301W is the perfect product for those looking for the best small ultrasonic humidifier and something more affordable as it is the cheapest model on our list.

But the lower price tag is not a reflection of inferior quality or smaller capacity as this model is still well-built and will cover up to 500 square feet, while also providing continuous operation of up to 24 hours.

With its 360-degree mist lid that is adjustable, it will diffuse the mist in all directions to ensure the entire room is covered. The tank is easy to remove and fits perfectly under the sink for easy refills while the adjustable speed settings provide easy customization.

Essential oil capability would have been excellent to allow you to diffuse your favorite essential oils, but for this budget model, its absence is still not a deal-breaker.


  • Relatively more affordable
  • Dispenses mist in all direction
  • Tank is easy to remove and refill
  • Speed settings can be adjusted


  • Not essential oil capable

3. Vicks V4600 – Best Ultrasonic Humidifier Brand

Vicks V4600

Photo: Vicks

  • Power: 120V, 60Hz
  • Coverage Area: 400 sq. ft.
  • Tank Capacity: 1.2 gallon
  • Runtime: 30 hours

Vicks is a top humidifier brand despite being more famous for its cough and congestion relief products. Over the years, they have carved out a significant market share, and hence if you want an ultrasonic humidifier from a top brand, their model V4600 will be a good pick.

Because the brand always aims to make it easy to breathe regardless of the weather and your health, this machine will accommodate two of their menthol VapoPads to help with congestion.

The unit has a wide enough tank opening to ensure refilling and cleaning are a breeze. And you can easily adjust the mist output for a more customized experience. Also, this humidifier will shut down automatically when the water level drops to the minimum point.

When you compare this humidifier to other ultrasonic models, it seems relatively louder. However, the sound it makes is still within acceptable levels and should not disturb you when sleeping.


  • Reliable product from a leading brand
  • Accommodates two VapoPads
  • Easy refilling and cleaning
  • Customizable mist output
  • Shuts off when the water level is at minimum


  • Can be a little noisy

4. Pure Enrichment PEHUMGRY – Best Cool Mist

Pure Enrichment PEHUMGRY

Photo: Pure Enrichment

  • Power: 100-240V, 50/60Hz
  • Coverage Area: 250 sq. ft.
  • Tank Capacity: 0.4 gallons
  • Runtime: 25 hours

The cool mist technology used on this humidifier not only makes it easy to breathe but will also be very useful at keeping your skin hydrated and ensuring you get a more restful sleep.

This machine has sleep-friendly features to ensure that you sleep even better. They include quite beeps when you turn it on and off. And the power light will always turn off after 10 seconds to ensure it does not distract you.

The 360-degree mist nozzle allows you to adjust the mist direction, and you also get high and low-speed settings to make this a highly customizable unit. With the one-touch button, control is simple, while the automatic shut off helps prevent accidents.

Although the 0.4-gallon tank is relatively smaller, this humidifier still provides up to 25 hours of runtime, and hence minimizing the refill frequency.


  • Cool mist technology allows you to breath easily
  • Simple one-button operation
  • Easily adjustable mist direction
  • Will not disturb your sleep
  • Shuts down automatically when empty


  • Relatively smaller tank capacity

5. Pure Enrichment PEHUMIDIF – Best Compact

Pure Enrichment PEHUMIDIF

Photo: Pure Enrichment

  • Power: 120V, 50Hz
  • Coverage Area: 250 sq. ft.
  • Tank Capacity: 0.4 gallon
  • Runtime: 16 hours

Pure Enrichment PEHUMIDIF measures 8 by 6 by 9 inches, which makes it one of the most compact units on our ultrasonic humidifier review. The compact size makes it easy to carry around and also ensures it will take up less space in the room.

Besides the smaller size, this is also an efficient humidifier with 360-degree mist nozzle to ensure the mist will come out in all directions.

With the soothing night light, this will be an excellent humidifier for use in the bedroom, and the easy to take apart design will make cleaning and refills a breeze. Because it has an automatic shut off function, you can set and forget it with no worries.

The 16 hours run time is one of the shortest on our list, and the 0.4-gallon tank is also one of the smallest. But the good news is that both are still good enough to ensure the machine can run at least all night long.


  • More compact and portable
  • Diffuses the mist in all directions
  • Includes a soothing night light
  • Shuts down automatically when the tank is empty
  • Easy to refill and clean


  • Relatively shorter run time
  • Smaller tank capacity

6. Air Innovations MH-901DA – Best Large

Air Innovations MH-901DA

Photo: Air Innovations

  • Power: 110-120 V
  • Coverage Area: 700 sq. ft.
  • Tank Capacity: 1.6 gallons
  • Runtime: 100 hours

If you have a larger room to cover and prefer not having to keep refilling your humidifier, the Air Innovations MH-901DA is an ideal model for you. It is one of the best large ultrasonic humidifiers as it has a 1.6-gallon tank that provides up to 100 hours of runtime and covers up to 700 square feet.

The mist output can be easily customized as this model has dual direction nozzles and five mist levels. And you will not need to worry about microbes growing under the tank as it is antimicrobial infused.

The digital LED display makes operating the machine more effortless, and there is an auto shut off function to ensure the unit switches off when empty.

For its price, one would expect this humidifier to have a remote control, but given that it is still quite easy to operate, lack of one should not stop you from buying it.


  • Large water tank capacity
  • Long runtime
  • Customizable mist output
  • Antimicrobial tank prevents the growth of microbes
  • Nice digital LED display


  • Does not have a remote
  • A little pricier

7. Pure Enrichment PEHUMLRG – Top-Rated

Pure Enrichment PEHUMLRG

Photo: Pure Enrichment

  • Power: 100-240V, 50/60Hz
  • Coverage Area: 500 sq. ft.
  • Tank Capacity: 1 gallon
  • Runtime: 24 hours

The Pure Enrichment PEHUMLRG is a top-rated ultrasonic humidifier that will ensure humidifying your rooms does not take a lot of effort. It is a cool-mist model that covers up to 500 square feet and will provide a runtime of up to 24 hours.

This will include dual nozzles that will ensure you get more mist stream options. And with the variable mist control knob, you can be sure you will be in complete control over the humidification process.

Sleeping will be more comfortable with the optional night light that includes several color options. And with this humidifier, you will get an automatic shut off function to ensure it will turn off automatically when it runs out of water.

The opening seems a little smaller, which can make fitting your hand when cleaning a little hectic. However, this unit comes with a cleaning brush to make it easy to reach all nooks and crannies.


  • Additional nozzle is convenient
  • Turns off safely when the tank is empty
  • Nightlight helps you sleep better
  • Mist output can be easily adjusted


  • Not the easiest to clean

8. Pure Enrichment HumeXL – Easy to Operate

Pure Enrichment HumeXL

Photo: Pure Enrichment

  • Power: 120V, 60Hz
  • Coverage Area: 270 sq. ft.
  • Tank Capacity: 1.3 gallons
  • Runtime: 16 to 50 hours

You can be confident that you will always have an easy time with the Pure Enrichment HumeXL as its touch-button control makes it one of the most straightforward models to operate.

At the lowest setting, this machine will provide up to 50 hours of runtime, and hence making it one of the longest-running on our list. This and the relatively larger 1.3 gallons tank will minimize the frequency of refills.

Controlling the mist output is precise and straightforward as this unit will include dual independent mist control nozzles. Because the tank has an extra-large opening, cleaning up this humidifier will be a breeze.

The provided directions are not the best as they can be misleading in some areas, but overall this is still an easy machine to figure out.


  • Easy to use buttons
  • Relatively longer runtime
  • Precise and straightforward mist direction control
  • Easy tank cleaning


  • Directions are not the best

9. Miro NR07G – Convenient Top-Fill

Miro NR07G

Photo: Miro

  • Power: 110-220V
  • Coverage Area: 600 sq. ft.
  • Tank Capacity: 1 gallon
  • Runtime: 8 to 24 hours

The top-fill design is the most convenient element of the Miro NR07G, and it will ensure that you can even refill it when the unit is running so that you never run out of water. And this 1-gallon tank will provide up to 24 hours runtime.

Overall, this is a more elegant and modern-looking appliance that will look fantastic in any space. And with the more sanitary design, cleaning it should be quick and effortless.

The 600 square feet coverage is wide enough to ensure this machine will work well for large rooms, and the nearly silent operation means you will hardly hear it running when sleeping.

Being the priciest unit on our ultrasonic humidifier review, some users might find it out of reach, but the style, quality and coverage make up for the extra bucks.


  • Top-fill designs more convenient
  • Highly attractive and modern design
  • Wide enough coverage
  • Nearly silent operation
  • Completely washable


  • More expensive

10. Homedics UHE-CM65 – Versatile 2-in-1

Homedics UHE-CM65

Photo: Homedics

  • Power: 120V
  • Coverage Area: 400 sq. ft.
  • Tank Capacity: 1.4 gallons
  • Runtime: 65 hours

With a versatile 2-in-1 machine like the Homedics UHE-CM65, you will get a reliable appliance that will both purify and humidify your air, and hence eliminating the need to have two separate machines for the two functions.

Another element that makes this one of the best ultrasonic humidifiers is that it will provide one of the lengthiest runtimes on our list. Its 1.4-gallon tank will allow it to run continuously for up to 65 hours.

The antimicrobial technology helps prevent the growth of mold and mildew on the tank, while the built-in nightlight is very soothing, and it will help you sleep better. Also, this model has a nice handle to make it easy to carry.

While this humidifier is not whisper-quiet and will produce more noise than most on our list, you will hardly hear it once you get used to using this machine.


  • More versatile and multifunctional
  • Easy to carry with handle included
  • Prevent mold and mildew growth on tank
  • Relatively longer runtime
  • Soothing nightlight


  • A little noisy


The whisper-quiet and filter-free design of the ultrasonic humidifiers will make them some of the most convenient types out there. And if you are on the market for the best ultrasonic humidifier, you can be sure there is something for you on our list.

But, to make your choice even more straightforward, the Levoit LV600HH is our best overall as it not only covers more space but also provides both warm and cool mist.

However, if you prefer to use less money on your ultrasonic humidifier purchase, the more affordable Crane EE-5301W is what we recommend.