7 Top Humidifiers to Ease Asthma Symptoms — Reviews and Buying Guide

38 Models Considered
55 Hours of Research
8 Experts Interviewed
280 Reviews Analyzed

You wake up tired, irritable, and feel as if you’ll never be well-rested again. It hurts to take a deep breath and even cleaning your home is more of a chore than it should be. Asthma affects your whole life but purchasing a humidifier can lessen the burden of it. Humidifiers work to produce extra moisture in the air. Some even help purify and clean the air. All this helps to make it easier for those who have asthma to breathe a little easier.

The search for the best humidifier for asthma can be a bit easier, thanks to our handy guide. In this article, we will look at the seven best humidifiers for asthma. Included in each description is the coverage area and mist type. We’ve also taken the dimensions and tank capacity into account. The descriptions will let you know which humidifiers can work as essential oil diffusers, and which ones are best for small or large spaces, night time or daytime.

Top 7 Humidifiers for Asthma Review 2018

To help with this article, we looked at manufacturer details, online reviews, technical information, customer feedback, and our observations. What follows is a comprehensive guide to humidifiers. There is a comparison table that quickly overviews the seven humidifiers we researched, followed by in-depth analyses of each device. Then, there is a buying guide with more information about the features to look for, as well as an FAQ section. Together, this article seeks to help you get a bit more comfortable with choosing the best humidifier for asthma sufferers.

Name and Features Image Rating Price
1. BIZOND Ultrasonic Humidifier (Editor’s Choice)
A stylish option with a sizeable four-liter water tank can produce both cool and warm mist for up to 24 hours
Ultrasonic-Humidifier
2. Everlasting Comfort Ultrasonic Cool Mist Humidifier (Best No Filter Humidifier for Asthma)
This six-liter humidifier can cover up to 400 square feet without a need to regularly replace the filters
Everlasting-Comfort-Ultrasonic-Cool-Mist-Humidifier-6
3. InvisiPure Alta Cool Mist Humidifier (Best Cool Mist Humidifier for Asthma)
A small and compact unit that fits into any décor perfectly and can also be used as a calming night light
InvisiPure-Alta-Cool-Mist-Humidifier
4. Aennon Cool Mist Humidifier (Best Humidifier for Babies with Asthma)
This model features a bunch of handy safety features together with up to 20 hours of continuous runtime
Aennon-Cool-Mist-Humidifier
5. PureGuardian H940 Ultrasonic Cool Mist Humidifier (Most Customizable Humidifier)
A humidifier that has a directional mist nozzle allowing it to be customized according to your desire
PureGuardian-H940-Ultrasonic-Cool-Mist-Humidifier
6. Fancii Cool Mist Personal Mini Humidifier (Budget Pick)
A portable unit that can be used with your own water bottles of up to 0.6-liter volume producing cool mist for up to 18 hours
Fancii-Cool-Mist-Personal-Mini-Humidifier
7. eufy Humos Air 1.0 Ultrasonic Cool Mist Humidifier (Best No Frills Humidifier)
A decent model for those seeking for both quality and affordability – it features a four-liter tank and can easily cover up to 260 square feet
eufy-Humos-Air-1.0-Ultrasonic-Cool-Mist-Humidifier
7 Top Humidifiers to Ease Asthma Symptoms — Reviews and Buying Guide
Features
  • Mist type: warm and cool
  • Water tank capacity: 4 L.
  • Mist time: up to 24 hours
  • Coverage area: up to 485 sq. ft.
  • Essential oils diffuser: yes
  • Dimensions: 11.8 x 9.1 x 8.9 inches

More features: three speed settings for cool mist; releases 300 million cleansing ions per minute

OVERALL RATING: 9.8 out of 10

The Bizond Ultrasonic Humidifier is an extremely quiet machine, which makes it perfect for anyone who wants a bit of extra humidity in the room while sleeping. Whether you are an adult trying to warm your sick nasal passage or a baby with a bit of colic, this humidifier is perfect.

At under 30 dB of noise, the Bizond Ultrasonic Humidifier is quiet and gentle. It also provides clean air thanks to its purification system.

Each minute, 300 million cleansing ions are released, which helps eliminate bacteria in the air, making it the best humidifier for asthma and allergies. Common bacteria, such as E. coli and Staphylococcus are removed, helping you stay healthy. The device is truly versatile: there are three mist settings, and you can also choose between warm and cool air.

In addition to these benefits, the humidifier has extremely low energy consumption. In fact, it can operate for up to 24 hours without having to fill the water reservoir. Most users found that there was relatively little maintenance. This means that instead of waking up in the middle of the night, you can continue to sleep soundly knowing the air you breathe continues to be healthy.

The Bizond Ultrasonic Humidifier automatically shuts off when the water level becomes too low. It is also designed not to fall over; there is no worry if someone bangs into the table at night.

PROS:
  • Safe and practical
  • Low energy consumption

CONS:
  • Rather bulky to store on a small table

Features
  • Mist type: cool
  • Water tank capacity: 6 L.
  • Mist time: up to 50 hours
  • Coverage area: up to 400 sq. ft.
  • Essential oils diffuser: yes
  • Dimensions: 14.4 x 12.4 x 7.9 inches

More features: no filter required; blue LED nightlight

OVERALL RATING: 9.6 out of 10

Sometimes a small, cute humidifier will do just fine. Other times you need a bit of strength to reach all corners of your room. The Everlasting Comfort Ultrasonic Cool Mist Humidifier is the largest product on our list, and its heavy-duty performance makes it ideal if you want a large room, whole apartment, or office to benefit from humid air.

The six-liter water tank can last an impressive 50 straight hours which means a lot less hassle of remembering to refill the tank. And, the cool mist that is emitted can actually work to reduce airborne viruses and bacteria. This is perfect when cold and flu season comes around and makes it a top contender for the best humidifier for asthma and coughs. Not only will the cool air soothe your throat, but the moisture will help soften your airway and allow the lungs more opportunity to gather the oxygen-enriched air.

As for bonus features, the Everlasting Comfort Ultrasonic Cool Mist Humidifier can also be used with essential oils. This is great if you want to add a bit of spice to the air and calm your nerves. There is also a blue LED nightlight which adds a tranquil light to your peaceful slumbers.

What truly separates this humidifier from others, though, is the fact that you don’t actually need to replace any filters. Filters are cumbersome and expensive, and the Everlasting Comfort Ultrasonic Cool Mist Humidifier uses its advanced technology so that even with regular tap water, you can be assured that the mist going into the air is clean, pure, and healthy.

PROS:
  • No need to buy or replace any filters
  • Large water reservoir means less refills
  • Can be used with essential oils

CONS:
  • May be too large for an average room
  • The water tank has no grab handles

Features
  • Mist type: cool
  • Water tank capacity: 0.2 L.
  • Mist time: up to 7 hours
  • Coverage area: small and mid rooms
  • Essential oils diffuser: yes
  • Dimensions: 5 x 5 x 8.75 inches

More features: soothing nightlight; timer for 1,3, or 6 hours

OVERALL RATING: 9.5 out of 10

Not all humidifiers need to be sterile looking and obtrusive. Instead, the InvisiPure Alta Cool Mist Humidifier demonstrates that a humidifier can seamlessly fit into any décor. Emitting a calm, cool mist, this humidifier is also pleasant to look at with its rich wood tones and large LED band that can shift colors. In fact, there are seven LED colors that you can cycle through, from a cool peach color to a deep blue. You can use this humidifier as a light accent in your living room, or as a comforting night light for your child.

The ultrasonic technology of the InvisiPure Alta Cool Mist Humidifier releases mist for up to seven hours while on a low mist setting. This means that there is just enough of a water reservoir to helm mist the majority of your night dreams. However, don’t be worried about keeping it on too long as there is an automatic shut off sensor once the water level becomes too low.

The cool mist of this humidifier is perfect for helping to heal common ailments. Whether it is dry coughing, chapped lips, or nasal congestion, the InvisiPure Alta Cool Mist Humidifier can help. It is particularly beneficial for those who have asthma.

You can also use your favorite essential oils with this humidifier. This is perfect if you want the calming scents of lavender to lull you to sleep, or the perky effects of peppermint to help you get ready for the day.

PROS:
  • Looks great in any room and isn’t too obtrusive
  • Cool mist helps with dry skin and breathing issues
  • Colorful LED lighting

CONS:
  • Smaller in size with a little water reservoir so needs to be refilled often

Features
  • Mist type: cool
  • Water tank capacity: 2.8 L.
  • Mist time: up to 20 hours
  • Coverage area: mid rooms, whole house
  • Essential oils diffuser: yes
  • Dimensions: 7.8 x 8.3 x 11.4 inches

More features: seven color LED light; stone filter; “The Art of Aromatherapy” book included

OVERALL RATING: 9.4 out of 10

It’s never too early to invest in a humidifier. This is true even for the littlest person in your family. Babies can definitely benefit from the moist air that a humidifier presents, especially if they have any breathing issues such as asthma.

The Aennon Cool Mist Humidifier works well for babies and toddlers because, not only does it help soothe dry airways and provide extra oxygen, it also cycles through seven LED colors, which provides a calming nightlight. You can choose one color to be on continuously, or you can select for the machine to cycle through them.

There are many safety features, which again makes it perfect for babies and toddlers. The automatic shut-off feature means that even if it runs out of water, you won’t have to worry. Also, it is quite sturdy and won’t be easily knocked off a shelf or table. As well, the Aennon Cool Mist Humidifier is whisper quiet, and won’t make any disruptive sounds. Many people have reported that they forgot it was even in the room because it is so quiet.

The design of this humidifier is quite lovely, thanks to its blue sphere water tank. Almost all users found it to be easy to set up and control, which is especially beneficial if you’re using it with a newborn.

One last feature of the Aennon Cool Mist Humidifier is the fact that it can be used with essential oils. New parents will know the dread of trying to get a baby to sleep and there has been some promising research into the efficacy of essential oils. Try some calming lavender as part of the bedtime routine, turn on the LED nightlight, and hope that your little angel drifts into a long, peaceful sleep. Then maybe, you’ll be able to get some much needed rest as well.

PROS:
  • Seven LED lights are comforting for both children and adults
  • Very quiet and sturdy
  • Nice shape and design

CONS:
  • Small in size and needs to be refilled often

Features
  • Mist type: cool
  • Water tank capacity: 1.9 L.
  • Mist time: up to 30 hours
  • Coverage area: up to 400 sq. ft.
  • Essential oils diffuser: no
  • Dimensions: 7.3 x 7.3 x 15.4 inches

More features: directional mist nozzle; auto shut-off; optional night light

OVERALL RATING: 9.3 out of 10

The PureGuardian H940 Ultrasonic Cool Mist Humidifier is a powerful, attractive humidifier that has a surprisingly large capacity. Its 1.9-liter water tank results in up to 30 hours of mist time. As well, the coverage area is a whopping 400 square feet. For those with open-plan homes, this humidifier will be sure to find its place.

If you want to target a particular part of the home, take heart as the PureGuardian H940 Ultrasonic Cool Mist Humidifier actually has a directional mist nozzle. This is an excellent display of customization that not many other humidifiers have. Surprisingly, the strength of this model is housed in a relatively standard-sized machine, with a 15-inch height and a 7-inch width. This means that it can sit comfortable on a table or shelf and still look relatively inconspicuous.

If you plan on using the PureGuardian H940 Ultrasonic Cool Mist Humidifier at night, there is a night light, which is perfect if you plan to use it in a child’s bedroom. There are three speed settings, so you can customize just how much cool mist you want in the air.

For safety, there is an automatic shut-off function and a refill indicator light. The one-year limited warranty is great, although most customers who purchased this humidifier did not have any cause to take advantage of it.

PROS:
  • Various settings and nozzle make it very customizable
  • Compact and attractive design

CONS:
  • A little difficult to fill with water

Features
  • Mist type: cool
  • Water tank capacity: up to 0.6 L. (bottle)
  • Mist time: up to 18 hours
  • Coverage area: small room
  • Essential oils diffuser: no
  • Dimensions: 5 x 4 x 1.5 inches

More features: portable; powered by 3 AA batteries or USB

OVERALL RATING: 8.6 out of 10

The Fancii Cool Mist Personal Mini Humidifier is an incredibly neat, innovative creation. Basically, all you purchase is a stand and then use your own individual water bottle to create the humidifier. The result is an efficient, inexpensive product that actually works. The stand itself uses advanced technology to take the water from the bottle and turn it into moisture that fills the air. As a bonus, this mist is hygienic and clean.

You can take the Fancii Cool Mist Personal Mini Humidifier with you on any trip as its compact design fits into any suitcase or backpack. It even goes undetected from the ruthless eyes of TSA agents. It is powered by battery or USB cord, which allows for even better functionality.

The timer on this humidifier allows for different increments of two, four, six, and eight hours. There is also an automatic shut-off for peace of mind. This means that once the water runs out, there is no need to panic as it will safely turn off on its own.

The noise level is less than 15 dB which is whisper quiet. There is no worry that the Fancii Cool Mist Personal Mini Humidifier will take over any space. It is quiet, unassuming, and very advanced; you may purchase it for its innovative design, but you will keep using it because it works.

PROS:
  • Portable and easy to travel with
  • Very affordable
  • Relatively long runtime

CONS:
  • Not the most aesthetically pleasing to look at
  • Can’t be used with bottles of more than 0.6-liter volume

Features
  • Mist type: cool
  • Water tank capacity: 4 L.
  • Mist time: up to 20 hours
  • Coverage area: up to 260 sq. ft.
  • Essential oils diffuser: no
  • Dimensions: 8.3 x 8.3 x 11.9 inches

More features: zeolite filter; auto shut-off

OVERALL RATING: 8.5 out of 10

The eufy Humos Air 1.0 Ultrasonic Cool Mist Humidifier is a nice, middle of the road humidifier. It doesn’t have a lot of extra features, but it does work well and is perfect if you’re just looking to boost the humidity in your room.

With a cool mist function, the eufy Humos Air 1.0 Ultrasonic Cool Mist Humidifier helps with those suffering from asthma as it works to make breathing more comfortable, especially in dryer climates. The water is first heated which helps reduce bacteria. Then, it’s released as a refreshing mist. The mist can penetrate an area of 260 square feet, which is perfect for a small apartment, living room, or bedroom.

As for the water tank, it has a nice one-gallon capacity which results in up to 20 hours of use. This is perfect if you intend to keep the humidifier on at night as you won’t have to worry about refilling the tank. If the water level does become too low, there is a warning to remind you to refill it, and if this goes unheeded, no worries as there is an automatic shut-off function as well.

The controls of the eufy Humos Air 1.0 Ultrasonic Cool Mist Humidifier are easy to use. Just push the buttons to regulate mist and air flow. And no need to worry about future issues. There is a 15-month warranty, and all the experiences with customer service have been positive.

PROS:
  • User-friendly controls
  • Good, basic machine
  • Solid warranty and helpful customer service

CONS:
  • No special features

Buying Guide

Before you commit to the best humidifier for asthma, it’s important to know all the different features a machine can have. Even if a particular humidifier sounds great, if it doesn’t meet your needs, then it’s not worth purchasing it. Read on to learn more about what specific features humidifiers have as well as a few commonly asked questions.

Why do people with asthma buy humidifiers?

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When you have asthma, the airways that supply oxygen to the lungs become constricted. This makes it harder to breathe and can lead to wheezing and even coughing. At night, you want to be able to get a good night’s sleep, and the inability to breathe can significantly impact this. A humidifier outputs extra moisture in the air which will make it easier to breathe. The extra moisture softens the airways, putting less stress on the delicate tissues. As well, when air has more moisture in it, it also means that it will have more oxygen in it. This means the lungs don’t have to work as hard, giving you a much more peaceful slumber.

Features to consider while choosing a humidifier

There are many features to consider with a humidifier. Read on to learn more about what differentiates one product from another.

Mist type

Humidifiers can produce either cold mist, warm mist, or the option of either. Cold mist is nice and refreshing in the summer, but warm mist is particularly comforting in the winter. More often, humidifiers are used in colder months, during cold and flu season, so it’s always nice to have a humidifier with the option of warm mist. Be aware that if you plan on using a humidifier in a large room, office, or whole apartment, by the time the air particles get to you, chances are they will be room temperature.

Water tank capacity

A water tank capacity is vital for two reasons. First, the larger the tank, the larger the humidifier. If you have a small space like an apartment, then you will want a smaller humidifier, and smaller water tank. If, however, you need a humidifier for a large room or even an office, then there will be space for a water tank with a bigger capacity.
cool-mist-ultrasonic-humidifier-white-tank tg
Water tank capacity also reflects just how often you need to refill the humidifier. Small water tanks mean having to refill more often. If you just want a humidifier to be on for a few hours, then a small tank will suffice. If, however, you want your humidifier to be on all night long, be sure to find a water tank that will last. Otherwise, you will have to make waking up to refill the tank part of your nightly routine.

Mist time

Mist time refers to how long a humidifier can last before the water runs out. There are usually a few settings on a humidifier, so even if a product states that it can last 24 hours, this may be just at the lowest setting. If you set the humidifier on high, then the water could run out in only 12 hours.

If you plan on using your humidifier at night, then be sure to select a product with a mist time of at least 10 hours. This should guarantee that it will still be running as you wake up.

Coverage area

The coverage area of a humidifier refers to the square footage of a room that the humidifier will work in. Some humidifiers, like the InvisiPure Alta Cool Mist Humidifier and the Fancii Cool Mist Personal Mini Humidifier are best for areas under 200 square feet, a small living room or bedroom. Other humidifiers, like the Bizond Ultrasonic Humidifier can be used in large rooms, and even whole apartments.

Noise level

There are those that need the gentle hum of white noise to fall asleep. There are others that will snarl like a dog if anyone dares to even whisper at night. Each humidifier has a different noise level, and this can be one of the most important features to consider as it all comes down to personal taste. Those that like quiet should consider a humidifier which produces less than 30 dB of noise.

Essential oils diffuser

Essential oils are all the rage right now. Not only do they smell pleasant, but they also can help calm emotions and relax after a hard day at work. If you are interested in essential oils, invest in a humidifier that has the option of also being a diffuser. This way you can save both money and space as you won’t need two large machines in your room. Products such as the InvisiPure Alta Cool Mist Humidifier and the Rosewill RHHD-14002 can be used as diffusers.

Dimensions

Small humidifiers take up less space, but also have much smaller water tanks. Therefore, they will not last very long between refills. Large humidifiers take up more space, but their mist time is longer. Most humidifiers are medium-sized. They are meant to be placed on a table or shelf and are usually not higher than 12 inches.

If you have a particular space that you envision your humidifier to be, be sure to measure and compare with the product features.

Extra features

There are many additional features that a humidifier may come with. As they are machines, a warranty is always a bonus. Most will come with a one-year warranty, but be sure to check what the customer service is like should there be any issues.

Humidifiers produce moist air, but they also work to purify it. In this case, a filter will need to be changed. It’s always a nice bonus when extra filters are included as it cuts down on the overall cost. Try to find out what type of filters is needed and how convenient they will be to replace in the future.

Most humidifiers are electrical, but some smaller ones are battery-operated. Check to see if a humidifier comes with these batteries or if you need to purchase them separately.

Finally, one of the coolest extra features of a humidifier is if it can also act as a nightlight or mood enhancer. Calming LED lights mean the humidifier can be displayed front and center in your room. It can also serve as a reassuring nightlight for an anxious toddler.

FAQ

Yes, humidifiers are safe for both babies and small kids. In fact, they are increasingly becoming a staple in most nurseries. If you have a baby that wakes often or seems colicky, then a humidifier can be an easy remedy. The same goes with small kids as their natural curiosity usually leads to sticky fingers and a whole host of newly acquired germs.

Be sure to keep a humidifier away from small kids, perhaps on a high shelf or bookcase. The hot steam produced could burn their delicate skin. What’s more important, though, is to hide any cords. Even if a humidifier is out of reach, a toddler could quite easily pull on the humidifier and have it tumble down. Hide the wire or invest in a simple baby-proof cord wrapper.

Animals, such as cats and dogs, often have similar health issues as humans, including asthma. While not always diagnosed, if you observe that your cat or dog wheezes or coughs a lot, then try using a humidifier to help them breathe. Humidifiers are also great in winter if your pet has dry, scratchy skin. The extra moisture from a humidifier can help your pet feel more relaxed and comfortable.

Humidifiers usually produce hot steam. While this isn’t as severe as boiling water, prolonged exposure can react badly to the skin, especially with children. Always place a humidifier out of reach of children. Make sure the cord is hidden or secured. Most humidifiers will have an automatic shut off if the water reservoir becomes dry. It’s important, though, to monitor this and get into the routine of refilling the water on a regular basis. Finally, make sure that the humidifier is on a secure shelf. It is a large object, and can really hurt someone if it were to fall off a shelf.

Our Verdict

There are seven humidifiers that made our list, but three that rose to the forefront. The Bizond Ultrasonic Humidifier is a great humidifier. It helps eliminate bacteria from the air and purifies what you breathe. It is sturdy, has a large tank capacity, and works well even in a master bedroom.

The best humidifier without a filter is the Everlasting Comfort Ultrasonic Cool Mist Humidifier. While its technology does purify the water that is released into the air, it doesn’t need a filter to do so. This leaves a lot less effort and money which is a great combination.

The third product on our list that can be considered the best humidifier for asthma is the InvisiPure Alta Cool Mist Humidifier. By releasing a soothing cool mist in the air, this humidifier works to calm the airways and bring more oxygen to the lungs. It is a great find and a purchase you won’t regret.

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