Ultrasonic Humidifiers: 18 Reviews

Having a humidifier is a must for certain people. When the heat turns on, dry air may come. Dry air in your home can be the cause of itchy or dry skin and breathing problems in some, so adding a little moisture to the air just makes sense. You do not, however, have to make use of a traditional device. If you’d prefer a humidifier that doesn’t use the traditionally noisy fan, you might have better look using an ultrasonic humidifier. 

Finding the best ultrasonic humidifier takes more than a quick search online, though. That’s why we’ve put together this list of the best ultrasonic humidifiers on the market today, complete with information about all of their best features as well as links to where they can be found. If your goal is to find a great ultrasonic humidifier that is going to help you to make your home or office a little more comfortable, you’ll find exactly what you need on our list. 

Top Ultrasonic Humidifiers In 2021

While there are definitely a set of factors that go into making one ultrasonic humidifier better than another, the importance of each of these factors can differ from person to person. While our top pick may be best for most households, requirements can vary from person to person. That’s why our list of the best humidifiers has a range of different humidifiers, each with their own selling points. No matter what you need from one of these devices, you’ll be able to find the perfect match for controlling the humidity levels of the air in your home from our selection of today’s best humidifiers.

Best Overall: Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier

Some of the best overall ultrasonic humidifiers out there right now are the easiest to use. It’s not that they’re short on features by any stretch of the imagination, but rather that they are set up so that they work right out of the box. These units work in ways that keep them successfully in the background, allowing users to work and live without ever really having to think about the fact that a humidifier is on. If you’re looking for a best-quality unit that will stay out of the way and still keep working, this might be the best choice for you. 

This unit is our top pick because it really covers all of the bases when it comes to basic utility. It has a water tank that provides for 16 hours of continuous mist output, so you can fill the tank up with water at the beginning of your day and not have to worry about refilling it with water when you go to sleep. The unit will automatically turn itself off when it gets low on water, allowing you to feel comfortable with the safety of using the device. It even has a nightlight function so that you can put it in a child’s room in order for him or her to feel a little more comfortable.

In addition to all of this, the unit is even easy to clean, which can be particularly helpful if you have hard water that will lead to white dust formation. It comes with its own special cleaning brush so that you can ensure that the unit won’t grow mold, accumulate scale or white dust from hard water, or have other unpleasant additives spewing into the air. Simply knowing that you’re going to be able to use this unit regularly without having to take it apart every time you clean it is enough for many users, especially when they prioritize ease of use above all else. If you’re in the market for a simple ultrasonic humidifier, our top pick might be the best cool mist humidifier for you.

Everlasting Comfort Humidifier for Bedroom

If you’re the kind of person who really likes having an ultrasonic humidifier running in your room for dry skin or otherwise, it can be fairly annoying to see one of these units run out of water. While you certainly aren’t ever going to find a type of humidifier that can run forever, finding something with an exceptional capacity is a great way to ensure that you can keep your humidifier running as long as possible. If you’d rather not have to make repeated trips to fill up your humidifier tank with water during the day, this ultrasonic model might be the best humidifier for your needs.

Perhaps the biggest selling point for this unit is that it has a six-liter water tank. This water tank is large enough to ensure that it keeps running for up to fifty hours. That means that you can safely keep this unit running for over two days without a water tank refill - something that most other units cannot match. The unit can keep that output going in spaces up to five hundred square feet, making it one of the best choices for living rooms, bedrooms, and even dorm rooms. It’s an incredibly versatile piece of technology.

The unit also has some fun extra features. You can use aromatherapy products with this humidifier, helping you to keep your room smelling fresh even while you control the humidity in the space. The unit is also surprisingly quiet for something its size, allowing you to still feel comfortable leaving it plugged in when trying to study or even having important conversations. If you’re looking for an excellent ultrasonic humidifier that will let you take control of the humidity of your space for a very lengthy period of time, this might be the right product for you. 

LEVOIT Humidifier for Large Room Bedroom

Essential oils are incredibly important to many people. Whether they use them for medical reasons or just to put a hint of a good scent in the air, these oils have become popular enough that they have a range of different devices that can help aerosolize them. While this can be useful, it’s even better if you can put your essential oils in the air with a device that you already use. If you find yourself trying to deal with too many gadgets in too little space, you might want to combine your diffuser with your ultrasonic humidifier in a manner similar to that used by this LEVOIT product. 

Though essential oils can be used in many different ways, one of the most popular methods of dispersal is through the use of an essential oil diffuser. Diffusers work in a way that’s very similar to ultrasonic humidifiers, so it makes sense that there would be at least a few different products out there that would combine both devices. This unit from LEVOIT does a fantastic job of not just being a great diffuser, though, but by being an excellent humidifier that happens to also work particularly well with oils. If you want to breathe a little easier, the combination of the two devices really can help. 

Perhaps the most surprising thing about this unit is that it can cover a truly massive area. This device can add humidity to dry air in rooms of over 750 square feet, making it one of the more powerful humidifiers on the market right now. Simply being able to put out moisture at this level is going to be enough to sell it to most, but being able to do it quietly and while also working as a diffuser is honestly amazing. If you’re looking for something that’s going to really change the atmosphere of a room, you should take a look at this humidifier. 

Homech Top Fill Cool Mist Humidifier

Having a the best ultrasonic humidifier is a great way to keep your room at precisely the humidity level that you like. Unfortunately, a typical type of humidifier has to be adjusted quite often to make sure that the humidity level stays at the point that feels the most comfortable for any given user. Though this isn’t necessarily a huge problem for some, it does make the device a little bit less pleasant to use for others. If you wish that your ultrasonic humidifier could do a better job of keeping the humidity in your room constant, you’ll love this unit from Homech.

One of the best features is that these humidifiers use a built-in humidistat to measure the ambient humidity of the air in your room to ensure that it keeps working in a constant manner. That means that instead of having to change the settings any time your room starts to get too humid or too dry, the built-in humidistat allows the unit to do so on its own. This is a little feature, sure, but it’s one that makes the entire process of humidifying a room a little easier. This is one of the best choices for those who might leave the humidifier in a room with a child, for example, or who need a fairly precise level of moisture for health reasons.

The unit is also whisper quiet, operating at around 25 decibels. This is about half the sound of a running refrigerator, making it one of the quietest ultrasonic units that you’ll find today. If you want something that’s going to do its job quietly and consistently, this might be your best bet. 

Homasy 4.5L Cool Mist Humidifier

Sometimes it’s nice to have a humidifier that makes life a little easier on you. Given that the entire point of the product is to ensure that the user’s life is a little more pleasant, it makes a lot of sense that those who love ultrasonic types of humidifiers might often prefer them to be very easy to use. If you’re in the market for a good humidifier, try to think about what you’re going to have to do to keep it work. If ease of use is a priority, you will definitely like this excellent ultrasonic humidifier from Homasy. 

The first of the major bonuses of this ultrasonic humidifier is that it has a fairly large water tank. Able to run for about thirty hours without the tank being refilled with water, it requires a lot less interaction than many other ultrasonic humidifiers that are on the market right now. The large size of the water tank doesn’t make it harder to fill and clean, though - in fact, the unit is designed to be able to be cleaned very easily. It’s the kind of product that really is made with users in mind.

In addition to the water tank, the unit also has an adjustable nozzle. This means that you can direct the mist from the unit wherever you like, making it easier to position the humidifier while still being able to get the coverage that you want. This might seem like a little detail but it can be incredibly useful for those who have a limited amount of space in their rooms. If you’re looking for an ultrasonic humidifier that lets you take control of the experience while still requiring less work on your part, this humidifier might be the right choice. 

Miroco Cool Mist Humidifier

If you’re in the market for a one of the best choices of an ultrasonic humidifier, you’re going to want to pay careful attention to exactly how the unit works. Understanding its operation is a key part of making the right choice, as is understanding how you want to use the unit. If you are looking for something that’s going to run all night, you’ll want to look for an efficient humidifier that utilizes a sizable water tank well. One such unit is this one from Miroco, which really works to keep your room humidified for several days at a time. 

Perhaps the most impressive thing about this humidifier is that it runs for about sixty hours on a full water tank. This two-and-a-half-day time frame is significantly longer than most of the bigger types of humidifiers on the market, letting you wait longer between water tank refills so that you can really enjoy how the unit works. It runs so long, in fact, that the unit is even designed to work as a nightlight so that it can become an important part of your nightly routine.

The unit’s quite safe even though it is designed to be used for long stretches. It will immediately notify you that it’s running low on water with an alert light and even initiate automatic shut off the mister as soon as the water gets to an unsafe level. If you’re in the market for something that’s going to keep running but that won’t cause any problems, this really might be the perfect ultrasonic humidifier for your needs. 

Homech Cool Mist Humidifier

One of the tougher parts about using a humidifier is determining exactly where you are going to put it in a room. There are few rooms out there that really feel like they have a lot of extra space, and even those that do might not have spaces that are appropriate for certain types of humidifiers. Once you find that spaces, though, you have to make sure that you’re still able to find a spot that’s going to allow the mist to reach where you sit or work. Fortunately, this ultrasonic humidifier from Homech does have you covered on that front.

This unit is great for those who have put their ultrasonic humidifiers in specific spaces for a few reasons. The first is that it has a three-hundred-sixty degree nozzle, which allows you to ensure that the moisture from the machine is always pointed at where you’re stationed. The unit also pushes the water higher than average when it is in the air, allowing it to travel farther. This, in turn, gives users a chance to still get the benefits of the machine even when it is a little farther away.

The best news is that this unit also works for a long time. With a fifty-hour run time, you’ll always be able to depend on the unit working when it is most needed. Whether you need your humidifier in a specific spot or you just want something that works at a difference, this might be the unit for you. 

HUMIDIMASTER 6L Ultrasonic Humidifier

How concerned are you with the purity of the water that you use in your ultrasonic humidifier? While you should always feel fairly safe using even tap water in these units, the truth is that many people do tend to use purified water just in case there’s something lurking in their own water. One of the better ways to avoid this, though, is to seek out a humidifier that does the purifying itself. If that sounds like the best fit for you, you’ll love this humidifier from HUMIDIMASTER.

This unit purifies the water in its 6 liter tank through the use of a ‘medical stone’. This stone is actually fairly efficient at getting foreign matter out of your water, ensuring that you’ll only get sprayed with purified moisture. This can be a huge benefit for those who have very specific allergies as well as for all of those who are uncomfortable with the idea of not knowing exactly what’s in their humidifier’s spray.

The medical stone is a good addition but it’s not the only thing worth talking about. The unit has a sleep mode that runs at about 30 decibels, which is a lower volume than even a quiet neighborhood street. The unit also has a three-sixty nozzle, which ensures that you’ll get moisture no matter where you are. This really is an impressive humidifier no matter what the specific feature you prioritize. 

Crane Ultrasonic Cool Mist Humidifier

Having a little bit of extra control over a humidifier is never a bad thing. If you’ve ever used a standard humidifier, you know that the high and low settings are never really as accurate as you might like. High settings can feel like they’re absolutely soaking your room, while low settings might feel like they do nothing at all. That’s why it is nice to see units like this one from Crane, which has a variable speed setting which allows you to really customize your ultrasonic experience. 

The variable speed setting is really nothing new to anyone who has ever used a fan before. Instead of just choosing between high and low, you get to determine exactly how fast the unit puts out moisture. This is best for those who are going to use the machine during its entire 24 hours of run time, as their needs for moisture in the air might change significantly throughout the day. Just having this little bit of extra control can be very helpful, especially when you’re using the unit all day. 

The unit isn’t just easy to use, but it’s also easy to clean. Designed with real people in mind, you won’t have to take it apart just to keep your water tank clean of scale or white dust from hard water or otherwise. Of course, if you do have hard water you may want to consider using distilled water anyway. If you’re looking for something that really works to give you the experience that you want, you’ll definitely want to take a look at this ultrasonic humidifier. 

OYRGCIK Cool Mist Humidifier

It’s becoming more and more common for people to expect their ultrasonic humidifiers to do more than just add moisture into the air of a room. These devices are taking the place of essential oil diffusers and even nightlights, especially among those who have a limited amount of space in their rooms. If this sounds familiar to you, you’ll definitely need to take a look at this unit from OYRGCIK.

This all-in-one unit definitely looks a lot different than your average humidifier. The design is actually meant to highlight one of its extra functions, giving it much more surface area to work as a nightlight. While many humidifiers might throw a little light on the outside and claim this kind of functionality, this humidifier actually uses a big light that can be set to seven different colors. With an eighteen-hour run time on a single water tank, that means that this unit can provide a great nighttime experience for anyone. 

Even if you don’t need a nightlight, you’ll still get extra functionality with this unit. It works as a great diffuser, making it easier to put healthy essential oils in the air while the humidifier works. If you are in the market for a nightlight and a diffuser as well as a humidifier, the most economical choice in terms of both space and money is definitely this excellent ultrasonic unit. 

Pure Enrichment® MistAire™ Silver Ultrasonic Cool Mist Humidifier

Coverage is honestly one of the most important factors for anyone who is looking for the best ultrasonic humidifier. Though there are definitely other factors at which you should look when buying, you do need to know how well the unit is going to be able to manage the moisture level in the room in which you station the device. If your goal is to make sure that the mist is always able to get to you, you’ll definitely want to take a look at this unit from Pure Enrichment. 

There are a few different factors that go into ensuring that you’re going to be able to get a proper amount of coverage. Though the actual spraying power of the humidifier as well as the size of the water tank both play big roles, many people tend to forget the role of the nozzle. The nozzle is what directs the flow of the spray in an ultrasonic unit, so getting something that you can move around is always best. That’s why the three-sixty spray nozzle on this unit is so important - it allows you to ensure that the moisture in the air from the humidifier really can cover your entire room. 

This unit provides excellent coverage for medium-sized rooms and can keep running for up to 25 hours. When it gets low on water, the unit also has an automatic shut off, ensuring that there is no danger of it breaking down. This is a great all-around humidifier that’s definitely worth a look for most. 

Vicks Filter-Free Ultrasonic Visible Cool Mist Humidifier

If you’ve ever had any kind of cold or congestion, you’re probably familiar with Vicks. A staple of American homes for decades, this substance is great for those who want to feel better quickly. It makes sense, then, that Vicks would combine its great formula with a humidifier to really help increase its healing power.

This Vicks ultrasonic humidifier works through the use of VapORub pads. You can put it in the scented drawer and you’ll quickly get the healing power of Vicks alongside the unit’s usual humidity. This will make it easier to breathe and give you a chance to feel better more quickly, which really increases the value of your humidifier investment.

With variable humidity output and a 33 hour run time, this unit is also very easy to use as a humidifier alone. It’s got great coverage and really can help you feel better if you’re dealing with congestion, while the humidity function can make breathing a little easier in general. If you’re in the market for something that’s going to help you feel better when you’re sick, you’ll definitely want to give this unit a look. 

Pure Enrichment MistAire Studio Ultrasonic Cool Mist Humidifier for Small Rooms

Many people have taken to using their humidifiers on the go, especially during those times of the year when the weather gets especially dry. Unfortunately, it’s just not possible to take a traditional humidifier with you if you’re trying to go to work. If you’re in the market for something that can work in a smaller space, though, you’re definitely in luck. This excellent ultrasonic humidifier from Pure Enrichment is perfect for those who are working in smaller spaces.

Though this unit is definitely not meant for big rooms, that’s doesn’t mean that it loses any of the power or functionality that you would expect from a Pure Enrichment product. Still made with exceptional craftsmanship and great parts, this unit has all the power you’ll need to ensure that you get the best coverage in a small space. It can even run for ten hours on one water tank, which allows you to keep using the unit through your workday without having to worry about getting back up to refill the tank with water.

This unit is also a great fit for a bedside unit. Powerful enough to reach your bed and long-lasting enough to run all night, it even has a nightlight mode for those who need a little extra light at night. Whether your goal is to have something that works well at work or that’s going to stay by your side at night, you’ll definitely want to give this excellent ultrasonic humidifier a quick look.

Crane Adorables Ultrasonic Cool Mist Humidifier

There’s nothing wrong with wanting something cute for your home, especially when that cute thing can also serve a great purpose. Though it’s really tough to call the average ultrasonic humidifier cute on any level, Crane does a fantastic job of making something that’s quite a practical look fund and friendly. Though many will be drawn to this particular unit because of how it looks, the truth is that this is one of the better overall ultrasonic humidifiers on the market right now. If you’re in the market for something that looks a little whimsical but that still provides a lot of coverage, this might be the perfect humidifier for your home. 

If you put aesthetics aside for a moment, you’ll actually see that this unit is quite practical. It can humidify medium sized and large rooms of up to five hundred square feet, allowing it to work perfectly in a nursery, dorm room, or bedroom. It can also keep working for up to twenty-four hours without having the tank to be refilled with water, making it a great choice for those who don’t want to bother with the device too often. This unit can even automatically shut itself off when the water level gets low so you’ll never have to worry about overheating or damage from the unit running on empty.

Yes, the elephant design is also a reason to look at this unit. It’s undeniably cute and makes it best fit for the rooms of children. If you a child - or a child at heart - who needs a humidifier, this one might be the right choice for you.

TaoTronics Cool Mist Humidifiers

One of the big truths about owning an ultrasonic humidifier is that most users really grow to rely on the products. They make spaces so easy to live in that most who own the device would keep them running around the clock if possible, especially if they live in areas in which the air gets very dry. Unfortunately, that tends to mean spending a lot of time refilling the tank with water and cleaning out as a result of scale formation or white dust from hard water, especially if you’re trying to keep it running as often as possible. If you’re looking for a better option, though, you’re in luck - this unit from TaoTronics is designed to keep running for the long haul.

One of the most impressive things about this unit is that it’s designed to run for a long time. Depending on the settings, a full approximately one gallon tank can allow the unit to run for over two days without the tank having to be refilled with water. This means less time spent with dry air and more time getting to enjoy the unit while it is running. Though the unit does eventually run out of water, it will alert the user when the water level is low and it will even shut down as soon as the amount of water in the tank is too low to be safe.

When the unit’s off, you’ll also find that cleaning is a breeze, which is nice if you have hard water. The ~1 gallon tank is designed to be large enough to fit even a large hand, allowing you to clean the inside without taking it apart. It’s also designed so that you won’t have to worry about spilling water when you refill the tank, making this one of the cleaner units to operate on the market today. This is definitely a unit that’s worth a look if you know you prefer to keep your humidifier running all day and night. 

LEVOIT Humidifiers for Large Room

It’s often nice to find a humidifier that does more than just the basics. Though there are absolutely consumers who prefer their ultrasonic humidifiers to simply do one job and do it well, others might want to combine multiple functions into one machine. If you like having a few options in terms of how your humidifier works and you are a fan of aromatherapy, you may want to take a look at this excellent ultrasonic humidifier from LEVOIT.

LEVOIT’s ultrasonic humidifier stands out in a few particular ways. The first is that it’s actually designed to give users the choice between warm mist and cold mist. Though this might not strike you as the most important feature, this is something that can be very important to those with breathing difficulties as well as to those who are sensitive to temperature changes in their homes. The unit is also designed to work with aromatherapy oils, allowing you to use specific compounds that can promote better breathing and overall health while you’re running your humidifier. If you’re already using an aromatherapy vaporizer, switching over to this unit simply makes sense.

Even if you’re not interested in the warm mist options or aromatherapy, you may like this unit because it is designed for larger spaces. Most humidifiers tend to work best for those nearby, but this one gives a bit more coverage. If you know that you’re going to be moving around a space while the humidifier is working, finding one that works in large rooms is a must. 

Nulaxy Top Fan Humidifier

Most traditional humidifiers share a fairly simple design. They force moist air out through a fan, which is usually positioned near the middle of the device. This design can be great for those who are nearby, but it definitely limits the distance to which the mist can be sprayed. If you’re looking for something that has a little more power behind it, you’ll want to look for a unit that has a fan at the top. One such unit is this excellent device from Nulaxy.

Nulaxy’s humidifier lists the top fan as one of its major selling points and the truth is that this feature does have a pretty big impact on how the unit works. Relocating the fan allows the mist to travel farther before it drops, thereby allowing those who are farther away from the unit to get the benefit of the greater humidity in the air. This is one of those engineering choices that is so simple that most would assume it was the norm, yet only a handful of even the best ultrasonic humidifiers have made this change.

The unit does, however, also have some other great selling points. It intelligently monitors the humidity in your room, adjusting the settings so that it can keep a sustained level as it runs. The unit even includes lights that can be used as a nightlight, make it perfect for use in the rooms of children. This well-engineered unit is really one at which most consumers should take a look. 

TaoTronics 4L Cool Mist Ultrasonic Humidifier

While it is always great to have an ultrasonic humidifier, it can be less pleasant to have one of these units if it is too noisy. If you’re using these in quiet spaces like a bedroom or a nursery, for example, the problems that are caused by the unit’s noise might not be worth the extra humidity levels in the room. Fortunately, there are units like this one from TaoTronics that seem designed with peace and quiet in the mind.

This humidifier produces less than 38 decibels of white noise or significantly less noise than a running refrigerator. That makes it a great pick for rooms where quiet is at a premium, especially since it also includes a night light and a sleep setting. This isn’t even a unit with a tank that necessarily needs to be filled with water too often, as it can run for up to thirty hours on a single tank of water.

In addition to staying quiet, the unit also puts the user in control of his or her experience. The humidity level for the unit can be changed at will, allowing users to dictate their own comfort levels. These features go a long way towards making this whisper quiet ultrasonic humidifier not only a great choice for those who prize quiet operation but also for those who want the kind of ultrasonic humidifier that will let them customize their own experiences.

Ultrasonic Dehumidifier FAQs

Is an ultrasonic humidifier better?

A cool mist ultrasonic humidifier can definitely be better than traditional models such as evaporative humidifiers, especially for some people. They tend to be quieter, more efficient, and overall better at controlling the humidity level in a room than evaporative humidifiers. These units lack the fan component that defines most older humidifiers, making it easier for them to function a little less loudly and with a lot more precision. If you really want something that’s going to work better than your old-school humidifier, you definitely owe it to yourself to take a look at a more modern ultrasonic humidifier to see how the humidifiers have changed in recent years. 

Are warm mist humidifiers or cool mist humidifiers better?

There’s really not one type of humidifier that’s better than the other. People certainly have preferences as to the temperature of the mist in their homes, of course, but neither evaporative humidifiers or ultrasonic humidifiers are objectively better. Cool mist tends to be better in hotter areas, especially if you don’t have air conditioning. Warm mist humidifiers tend to be better during the winter and for those who have breathing problems. Both warm and cool mist, however, can make your spaces much more livable when used correctly. 

Can ultrasonic humidifiers make you sick?

There is nothing about warm and cool mist ultrasonic humidifiers that is inherently unsafe. Ultrasonic technology isn’t going to do anything to your body and there is certainly nothing about having a humidifier that is going to cause harm to the average person. With that said, any humidifier can be a problem if you have certain breathing difficulties that are exacerbated by moist air. Ultrasonic humidifiers - and any other humidifier, for that matter - can also cause problems if you fail to clean out the water tank. The problem then isn’t caused by the humidifier itself, but rather by the fact that you’ve allowed mold to grow in the tank or culture bacteria in the water and are spreading it in the air. 

Are ultrasonic humidifiers bad?

No, ultrasonic humidifiers are definitely not bad. There is nothing dangerous about them and most of them tend to be a lot more efficient than standard humidifiers. Any health problems that could be caused by this kind of humidifier will be caused by a traditional humidifier, so don’t worry about adding the unit causing any kind of unusual sicknesses in your home. In truth, using one of these units can be incredibly helpful for the vast majority of people who purchase them. 

Do cool mist humidifiers kill germs?

No, cool mist humidifiers do not kill germs. There is nothing about a warm mist humidifier or cool mist humidifier that is designed for germ free operation and there are probably not any warm mist humidifiers or cool mist humidifiers out there that inherently have the power to do so. It’s important to remember that killing germs usually requires significantly more than spraying water in the air in your home and that most additions to humidifiers that claim to be germ free have only a very limited ability to do so. If you’re looking for something that will kill germs, you’ll probably want to look elsewhere. 

Ultrasonic Humidifier Buying guide

There’s no single warm mist or cool mist ultrasonic humidifier for every person. With all of the different features out there, it’s nearly impossible for one unit to do it all. If you’re looking for a great ultrasonic humidifier, though, you should remember to keep all of the following factors in mind. 

Tank Capacity

One of the defining features of an ultrasonic humidifier is the tank capacity. Ultrasonic humidifiers use a decent amount of water, so the amount of water that a unit holds is going to determine exactly how long it can run without your intervention. Buying a unit that has a large tank will let you keep the unit running for a longer amount of time. Bigger tanks (4L/~ 1 gallon or more) are generally best for those who plan to keep the unit running overnight or who are using the humidifier in larger spaces. 

Tank capacity also plays a huge role in the size of the humidifier. If you’re looking for something that is portable, for example, you’re going to want something that has a smaller tank. This trade-off is, unfortunately, one that you cannot get around, especially if you have a limited amount of space in which to work. More efficient units can work a little longer with a smaller tank, but ultimately run time and tank capacity are linked together. It’s usually best to start with this factor, as it’s going to inform a lot of the other factors that come below. 

Misting Style

For most, the choice is misting style is going to come down to whether one wants a warm mist or one wants a cool mist. Both warm mist and cool mist absolutely have their selling points and there are very few who do not prefer one over the other. If you are a fan of both, there are actually a few of the best units that can provide both warm and cool mist but you’re going to end up paying a premium for that kind of functionality. For most, it really is one or the other proposition. 

It’s also best to note that some units do have more options when it comes to warm and cool mist. The location of the misting nozzle matters, as does the ability to position the nozzle as one likes. Though you’re not going to find the latter very often, it is a huge benefit to those who are limited in where they can place their cool mist ultrasonic humidifiers. The type of nozzle is probably a little less important to most users, but it is something at which you can look if you are feeling particular about the kind of ultrasonic humidifier you’re going to buy. 

Controls

How are you going to control your cool mist ultrasonic humidifier? On a basic level, you can usually expect a couple of knobs or buttons to control things. If you want something that offers a bit more in terms of being easy to fill and use, though, you might want to look for a unit that has a full control panel. These units usually offer a little bit more in the way of utility, as they will allow users to set timers and to change up the speed of the fan in an easy-to-understand manner. 

If you’re looking for something more convenient, though, there are some other options. A remote control is fairly common across the board with high-end units, with a surprising number of humidifiers now having wi-fi capability. You can also look for a unit that has some degree of automatic control, which will alter the humidity levels in your home as the unit notices it rising and dropping. The latter feature is fairly rare but it is a great choice for those who really want a hands-off unit. 

Area

Finally, you’ll need to look at how big of a space one of these ultrasonic humidifiers can work in. The vast majority of ultrasonic units are going to be useful for spaces below four hundred square feet, with a few going a little bit larger. The space requirements are going to help you to ensure that you’re able to feel as comfortable as possible.

Remember, this factor is also going to determine exactly how well your unit actually works in your space. If you choose something that’s too small, you’ll put a lot of extra work on the unit and you’ll likely see a shortened lifespan. Even worse, you probably won’t get the kind of humidity control that you want from the unit. Going a little bit bigger is almost always a best (and you can check out our site for the list of best whole-house humidifiers. You may also find a luxury electric fireplace perfect for your home).