7 Best Ultrasonic Humidifiers – Pros, Cons and How To Buy One

Last Updated: August 31, 2024

For the problem of low humidity, ultrasonic humidifiers are an efficient, and advanced solution.

When it comes to tackling the beast that is low humidity, proper humidification is the only good solution. left unchecked, low humidity can affect your house and your health.

Dealing with this problem requires the aid of a good humidifier. Humidifiers have been in use for a long time now, and with time, the technology has been evolving. There are different types of humidifiers, based on the working mechanism, and the most popular among these are – evaporative humidifiers and ultrasonic humidifiers.

Best Ultrsonic Humidifiers	Water Tank Capacity	Mist Volume	Buy Link
Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier	1.5 liters	150 ml/hr	Buy
URPOWER MH501 Humidifier	5 liters	350 ml/hr	Buy
Everlasting Comfort Ultrasonic Cool Mist Humidifier	6 liters	270 ml/hr	Buy
LEVOIT Humidifier	6 liters	500 ml/hr	Buy
TaoTronics Ultrasonic Humidifier	3.5 liters	30 Hours of Moisturiz	Buy
Vicks Filter-Free 1.2 Gallon Cool Mist Humidifier	1.2 gallon	10 hrs of continuous mist without refilling	Buy

What is an Ultrasonic Humidifier and How does it work?

Ultrasonic humidifiers are devices used by many around the world, for efficient humidification of their space.

Using a ceramic diaphragm that vibrates on an ultrasonic frequency, an ultrasonic humidifier creates water droplets that exit in the form of cool fog, silently. The humidifier may or may not have a fan, based on the model. Humidifiers that don’t have the fans are usually compact and preferable for personal use.

A piezoelectric transducer creates a high-frequency mechanical oscillation in a film of water and as a result, a fine mist of droplets (one micron in diameter) is quickly evaporated in the air flow.

Generally, the quality of the mist generated depends on the water that is used. If the water used contains any impurities, they’ll be added to the mist. Any other contaminants in the water tank, or the water, are mixed with the formed mist. That’s why regular cleaning and use of fresh or distilled water is recommended for ultrasonic humidifier users. This will keep you safe from any bacterial contamination.

Distilled water or special disposable demineralization cartridges can be used to reduce the amount of airborne material. Mineral dust is not preferable and can have negative effects on your health.

An ultrasonic humidifier is a great option for anyone who’s looking for a humidification solution. However, many people also go for evaporative humidifiers.

Ultrasonic and evaporative humidifiers are different. The common thing about both types is that, they can humidify your space. Here are some of the noteworthy differences between these two types of humidifiers –

Ultrasonic Vs Evaporative humidifier

Performance –

Depending on the model, the performance can vary in both cases. However, generally speaking, ultrasonic humidifier are a little more efficient than evaporative humidifiers. Evaporative humidifiers have been in use for a long time, and use wick and fan for the evaporation process, whereas in case of an ultrasonic humidifier, a ceramic diaphragm which vibrates on an ultrasonic frequency is used to create cool fog.

Maintenance –

Maintaining an ultrasonic humidifier is more of a task than an evaporative humidifier. Mostly, the ultrasonic design doesn’t involve a wick which means that the water constituents such as minerals or other contaminants can end up in the resulting fog. This is why regular cleanups are a must with ultrasonic humidifiers. Also, using  distilled water helps

With evaporative humidifiers, this is not such a big issue. Since evaporative humidifiers use wick filters, all the contaminants are trapped by these filters and you get fresh and pure air. However, these filters need to be changed on a regular basis, so it can get expensive.

Noise –

Generally speaking, ultrasonic humidifiers are known for their noiseless functioning. Although there are many evaporative humidifiers that produce very little noise while operating, mostly, they are heard, unlike ultrasonic humidifiers.

If you’re looking for the humidifier that makes the least amount of noise among the two, it’s ultrasonic humidifier.

Cost –

Mostly ultrasonic humidifiers are a bit pricier than the evaporative humidifiers. This is due to the difference in their design, working, and features. Ultrasonic humidifiers are costlier because of their modern design, and added features.

These are a few of the top differences between the two. Considering the overall factors, ultrasonic humidifiers are a good option for your home.

Things To Check When Buying an Ultrasonic Humidifier

If you’re thinking of buying an ultrasonic humidifier for your house, there are certain factors you should consider such as –

The Manufacturer –

Get your products from trusted sources. In case of any issue, it is easier to contact a well-known manufacturer, than a no-name brand. It also ensures the quality of the product that you’re going to bring home.

Coverage –

Another thing that you should consider when you’re in the market for an ultrasonic humidifier is, the space you want to cover. For a small room, you can go for a small unit. There are whole house humidification units available as well if you want one unit for the whole house. Whatever your requirement, a unit is available for you.

Performance –

Different models offer different output, and you should get the one that generates the right daily amount. This depends on the tank size and the daily capacity of the unit. Also, there are a lot of different features that different models provide. By making a list of the essentials, can help you in making a decision. For example, ultrasonic humidifiers with features like a night light, and auto shut off, are preferred by most people. You have to make your own criterion.

You’re looking for a well-designed, efficient unit, that is effective and durable.

Cost –

Ultrasonic humidifiers can be a bit pricey. But, there are plenty of nice and affordable options available for you. If you’re on a strict budget, you can opt for a unit without the excessive features. Even without them, most unit provide excellent service.

These are a few things that you should consider before making a decision.

To make things easier for you, we have comprised a list of top ultrasonic humidifiers for 2020 you can check out, to find the one that’s perfect for you. In this list, we’re going to review the units by discussing their pro and cons. Here are our top picks-

7 Best ultrasonic humidifiers 2020

1. Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier

This is an ultrasonic humidifier from pure enrichment. It is an excellent overall option for homeowners. This humidifier can provide sixteen hours of continuous operation. It has an aesthetically pleasing design that makes it a great addition to any room.

Here are the noteworthy pros and cons of this unit –

PROS –

Ultrasonic cool mist technology-

Using the ultrasonic cool mist technology, this humidifier moisturizes the air safely for up to sixteen hours, continuously. There are high and low-speed options available, and you can set the speed according to your preference.

Good Output and coverage-

The unit has a 1.5-liter water tank that easy to fill and provides sixteen hours of powerful mist output on high mist setting. It delivers the moisture output of 150 milliliters per hour. This is ideal for covering bedrooms, offices, and other medium-sized rooms.

360-degree mist nozzle –

The unit features a 360-degree mist nozzle, which efficiently directs the mist towards the areas that need it, and away from areas that don’t. This ensures even distribution of mist all around the room.

Automatic shut off & night light (Optional)-

Whenever the water level is too low, or the water tank is removed, the unit automatically shuts off. This is to make sure that the unit doesn’t overheat. This keeps you, and the unit safe.

There is also an optional night light, which glows soothingly to provide you maximum comfort.

Quiet Operation-

This humidifier gives a quiet performance that is perfect for a restful sleep, and for a quiet daily routine.

Specifications-

• The unit weighs only 2.27 lbs, and it’s dimensions are 10.9 x 9.2 x 6.9 inches.
• The water tank has a capacity of 1.5 liters.
• It can produce 150 milliliters of moisture output per hour for sixteen hours on high setting.

And, here are the

CONS –

• It can only cover small to midsize rooms.
• Only lasts for sixteen hours on high setting.

Final review –

It is a unit for small to a midsized room. The unit is carefully designed, and tested, and has an aesthetic appeal as well. It is compact and can easily be placed to suit any environment. Not for large rooms. This unit is quite affordable and provides good value for your money.

2. URPOWER MH501 Humidifier

This beautifully designed, highly efficient unit from URPOWER is also a good option for you. It is an excellent addition to any space, and has a modern design. Here are the pros and cons of this unit –

PROS –

Great design –

The unit has simple and efficient design, and is aesthetically pleasing in any space. It has a really beautiful matt black body, and is designed to give you a great experience. It includes many features for safety, and efficiency.

Easy operation –

This humidifier is very easy to use. With only one power button, you can easily control the unit. No complicated procedures to follow. By short pressing the power button, you can choose from different mist outputs – Low, Middle, or High.

Large capacity –

This humidifier comes with a five liter water tank that can emit cool water vapor into air all night. The overall working time of the unit is from fourteen to seventeen hours, depending on the speed mode.

Auto shut off –

For added safety, the humidifiers has an auto shut off feature in case the water runs out, or the water tank is removed. This ensues there’s no overheating or short circuit.

Sleep mode –

For a good night’s sleep, the unit features a sleep mode. You can switch to sleep mode by long pressing the power button. It’s has the middle mist output, and all the indicator lights are turned off.

Quiet operation –

Unit’s whisper quiet functioning is a really great feature.

Specifications –

• The unit weighs 4.55 pounds, and the overall dimensions are 16.2 x 10.1 x 7.8 inches.
• The water tank has the capacity of 5 liters.
• Unit’s max mist volume is 350 ml/h and the typical working time of the unit is between fifteen to seventeen hours.

CONS –

• You cannot put essential oils in the unit.
• Water cannot be added to the base, or directly via the top.
• Requires regular cleaning.

Final review –

This humidifier is a good option for small to midsized spaces. Tank has good water capacity, and the moisture output is also really good. The unit is safe, and also features night mode for added comfort. Very easy to operate, this unit is affordable, and a good purchase.

3. Everlasting Comfort Ultrasonic Cool Mist Humidifier 

Everlasting has some of the best ultrasonic models available for you, and this one is definitely one of the best ones. Slick design, great performance, and capacity; these are just few of the attractive things about this model.

Here are the pros and cons –

PROS –

Compact economical Design –

This humidifier is compact, and has an economic design. There are no filters used, so no add on charges you need to worry about. This makes it economical, and more sustainable. Of course, to avoid white dust formation, distilled water is recommended.

Large capacity –

This humidifier has a water tank with the capacity of six liters (1.6 Gallon), and can provide an moisture output of 270ml/hr.. The unit is ideal for rooms up to 400 sq. feet, and can last up to fifty hours between refills.

Essential oil tray –

With the built in essential oil tray, you can enjoy the benefits of aromatherapy. With the emission of mist, you get the scent of your favorite essential oils making you more relaxed and fresh.

Auto shut off –

For safety purposes, this humidifier has an auto shut off option. This ensures the machine doesn’t overheat or short circuit when it’s out of water.

Quiet Functioning –

This unit provides you a noiseless functioning, so you can relax and enjoy your day, and night, undisturbed.

Specifications –

• The unit weighs only 4.2 pounds.
• It has the water capacity of six liters and can produce 270ml of  moisture hourly.
• It can run for about six days before refilling.
• Ideal for spaces up to 400 sq. ft.

CONS –

• This unit is not for large rooms.

Final review –

This unit is ideal for small to midsized rooms. It can last up to six days before refilling, thanks to the six liter water tank. It is also safe, and features the auto shut off option. This compact humidifier is also economical, and doesn’t require the use of filters. With the essential oil tray, you can get the benefits of aromatherapy.

4. LEVOIT Humidifier

This warm and cool mist ultrasonic humidifier from Levoit is a great solution for humidifying your space. This ultrasonic hybrid humidifier has many features that make it worthy of consideration.

Here are the top pros and cons of this unit for you to consider –

PROS-

Modern design –

The humidifier has a modern touch to its design and features touch control, and remote control. The humidifier has a special leak proof design and is a great addition to any space.

Easy to operate –

The unit is very easy to operate, thanks to its excellent design. The sensitive touch control, and the remote control make it easy to operate. With auto mode, you can leave it to the humidifier to produce the appropriate amount of mist according to the room’s humidity level. Wide tank is easy to open, and refill. It is also very easy to clean and maintain.

Great performance –

It provides great performance. It has a 1.5 gallon tank , which can provide 36 hours of continuous functioning  in mist level one. It can produce a mist output of about 50 ml/hr. You can use it for your bedroom, living room, or the office. The tank is made from ABS plastic, and is very hard to break.

Aroma Box –

The humidifier also features an aroma box, using which you can enjoy the benefits of aroma therapy. You can get clean and fresh aroma with the mist. Make sure to put the essential oils in the aroma box, instead of in the water directly.

Hybrid warm and cool mist –

The humidifier provides you with warm and cool mist at three different levels. Along with cool mist, you can get warm mist using the warm mist mode. Using the warm mist ensures that all the bacteria in the water are killed. Be careful while using warm mist mode, especially around kids, as it produces warm mist.

Quiet functioning –

The unit functions quietly, without disturbing your sleep, or daily routine.

Specifications –

• This humidifier weighs 4.92 pounds and its overall proportions are 11.3 x 7 x 10.5 inches.
• The water capacity of the unit is 6 liters and it can produce about 500 ml of moisture per hour.

CONS –

• It isn’t ideal to put the unit directly on wooden floor.
• Requires regular cleaning.
• Should be placed on elevated surfaces for maximum output.

Final review –

This humidifier is great for mid to large rooms. You can switch between cool and warm mist modes, and get your desired humidity level. This unit also features a aroma box for aromatherapy. It provides excellent performance and has a modern design. For those looking for the ease of use, and good features, this is a good option.

5. TaoTronics Ultrasonic Humidifier

TaoTronics is a wwell-knownname in the humidifier arena, and this model is a good option for homeowners.

Here are the pros and cons –

PROS –

For small to midsized spaces-

This humidifier is designed to give you ease of control. It features 3.5 liter water tank which is perfect for small to midsized bedrooms, bathrooms, kitchen, offices, etc. It is a great humidifier for spaces from 107 to 322 sq ft. This humidifier can provide you with ten hours of continuous mist without refilling.

Built in filter –

The humidifier has a built in ceramic filter that helps in purifying tap water; reducing harmful bacteria and bad odor. Filters can last you four to five months.

Double 360 degree rotatable mist Nobbles –

The unit has a 360 degree rotatable nobbles and easy dial knob controls using which you can precisely adjust the mist output direction, and volume to achieve a comfortable humidity level.

Quiet Operation –

The unit performs very quietly, and doesn’t interfere with your daily routine, or your sleep.

Auto shut off –

When the water level is too low, a red LED light turns on and the unit automatically shuts off. This makes sure that the unit doesn’t overheat or short circuit in your absence.

Specifications –

• The total weight of the unit is 2.5 pounds and its overall dimensions are 8.7 x 8 x 12.2 inches.
• The water tank has the capacity of 3.5 liters and can function for ten hours straight, producing mist.  
• It is perfect for areas up to 107 to 322 ft.

CONS –

•  Only good for small to midsized rooms.

Final review –

Ideal for small to midsized rooms, this is an efficient humidifier that comes with inbuilt ceramic filter. It features auto shutoff settings, and is quite affordable.

6. Vicks Filter-Free 1.2 Gallon Cool Mist Humidifier

Vicks is a well-known household name, and this is an excellent choice for you. This humidifier reduces the survival of the flu virus on the surface, and air, and keeps you safe. It is preferred by a number of people, and is one of the best ultrasonic humidifiers in the market.

Here are the –

PROS –

Low maintenance

This humidifier is effective, and requires very little maintenance.

It delivers cool, visible mist, and can run up to thirty hours per filling. It has a translucent water tank that has the water capacity of 1.2 Gallon. It can effectively humidify areas up to 100-400 sq. feet. It has wide tank opening for easy refilling, and cleaning.

Adjustable mist control

For customized output, the unit has adjustable mist controls. You can easily set the output to your desired setting.

Filter free

The unit is filter free, and doesn’t require any replacement filters, which is very convenient. It also has dual scent pad slots that fit Vicks VapoPads to provide soothing vicks vapors.

Quiet Operation

The humidifier operates very quietly. It is perfect for bedrooms, baby’s room, or your living room.

Auto shut off

In case of water shortage, the unit automatically shuts off to avoid overheating.

Specifications

• The humidifier weighs 4 pounds and its overall dimensions are 10.9 x 9.4 x 13.5 inches.
• The water tank can hold 1.2 gallon of water and the unit can run for thirty hours before refilling.
• It can cover areas from 100 to 400 sq. feet.

CONS –

• It is compact.
• Ideal only for small to medium rooms.

Final review –

This humidifier from vicks is a good solution for small to medium sized rooms. It is very low maintenance,  and works very quietly. It is also very affordable. It saves you the cost of replacement filters since its filter free.  Good for your bedroom, bathroom/kitchen, living room, or baby’s room.

7. Allin Exporters Ultrasonic Humidifier

This humidifier is from Allin Exporters, and is an aesthetically pleasing, efficient unit. With this, you can keep air fresh for breathing all day in your rooms.

Here are the pros and cons –

PROS –

Three in one action

The humidifier performs three functions. It humidifies, purifies, and ionizes the air. This ensures that the air you’re breathing is properly moisturized, and free of any bacteria and unwanted particles.

High performance

It delivers high performance. It can work up to twelve hours under highest mist mode, and about twenty four hours under minimum output setting. It has a large 2.4 liter water tank that can help the operation up to 12 hours on high setting. On minimum setting, the unit can perform for 24 hours. It operates on lesser energy, and is very cost efficient.

Germproof water tank

The water tank is covered with an antimicrobial coating. It helps in preventing the growth of mold and mildew, and provides clean cool mist.

Adjustable mist spray

You can adjust the output of moisture to your liking. The highest mist capacity is 370 ml. per hour.

Quiet functioning

This unit operates very quietly. It is ideal for people who prefer noiseless operation.

Auto shut off

In case of water shortage, the unit automatically shuts off thanks to the auto shut off feature.

Specifications

• The humidifier weighs only 200 grams.
• The tank can hold 2.4 liters of water and can operate for 12 hours (high setting), and 24 hours (minimum output setting).
• The highest mist capacity is 380 ml. per hour.

CONS –

• Does not come with an oil diffuser.
• A bit difficult to clean.
• Suitable for small rooms.

Final review –

This is a good option for small rooms. The output is good, and auto shut off option keeps the unit safe from overheating in case of water shortage. The humidifier can perform for a period of 12 to 24 hours, based on the output mode. The water tank has an antimicrobial coating for added safety. Affordable and efficient option for small to midsized rooms.

These are few of the top ultrasonic humidifiers you can buy in 2020. Hopefully you’ll find the one that’s perfect for your space.

Buying the humidifier is the first step towards taking care of yourself, and you house, in the face of low humidity. To ensure that you reap the benefits of your ultrasonic humidifier for a long time, you need to take good care of the device. Here is how you do that –

Tips – Taking care of Your Humidifier

Like any other humidifier, your ultrasonic humidifier also requires care. To keep it in good shape, you need to –

• Clean the humidifier regularly – You need to make sure that the unit is clean. To do that, you need to first unplug it. Fill the water tank with lukewarm water, mixed with either two table spoons of white vinegar, or one table spoon of bleach. Shake the mixture and let it sit for twenty to thirty minutes. This will disinfect the interior. Afterwards, empty the tank and rinse it with fresh water and dry it off. Do the same to disinfect the basin. Make sure to be careful and do not immerse the water basin or power cord in the water.
• Use distilled water – Using distilled water, instead of normal tap water can go a long way in ensuring the durability of your ultrasonic humidifier. Normal water contains a lot of mineral content which can produce a lot of white dust. Since many ultrasonic humidifiers don’t feature a filter, it is likely to end up on top of your furniture. Distilled water helps with that.
• Check on water level – If your humidifier doesn’t have the auto shut off option, you should keep a watch on the water level. In case of water shortage, the unit can overheat, which can lead to a short circuit. Be safe!
• Empty the unit after use – After the use, make sure to empty the tank. Sitting water can cause mineral buildup, which is not good for the interior.
• Store the unit in a safe place- Always store the unit in a safe, dry place when not using. This will ensure the durability of the humidifier.

FAQ’s

Question 1 – Can I add essential oils to my ultrasonic humidifier?

Answer 1 – Yes you can, but only if your ultrasonic humidifier features an inbuilt diffuser, or an aroma box. So do not mix essential oils directly with water. This can damage the interior of your humidifier.

Question 2 – Is it okay for the humidifier to operate all day?

Answer 2 – Yes, it is typical. Humidifiers can operate all day and night. You do need to keep an eye on the water level.

Question 3 – Is it normal if I don’t see the mist?

Answer 3 – Yes. In some ultrasonic humidifier, the mist is invisible. It is very normal. You can check the humidity level with the help of the humidistat and determine if it’s working.

Question 4 – How long before I need to change my filter?

Answer 4 – It depends. Generally, filters can last up to three- four months. Just observe, and change when you feel they’re not giving the normal results.

Question 5 – What should I use disinfect the humidifier?

Answer –You can use water, mixed with white vinegar, or bleach. If you’re using white vinegar, two table spoons, and if you’re using bleach one spoon is okay.

Question 6 – Is it normal for the humidifier to produce white dust?

Answer 6 – No. But that depends on the mineral level of the water. Normal tap water has higher level of minerals. So, if your humidifier does not have a filter, tap water can produce white dust. Also, if you are not cleaning the unit regularly, mineral build up inside the unit can also produce white dust. Use distilled water as it has low amount of minerals. Also, keep cleaning the humidifier on a regular basis.