Best Humidifier For Asthma And Allergies 2020 – Ultimate Guide

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For anyone who is suffering from asthma or knows a close family member who suffers from asthma, you will know that fall and winter is also known as asthma season. September is usually the worst and hospitals typically see a sharp increase in asthma admissions. 

Don’t let yourself or your loved ones become part of the statistics! It is not difficult to mitigate the effects of fall and winter and reduce the chances of an asthma attack. You just need to control the temperature and humidity of your home well to prevent insults on your airway.

Sometimes it can be as easy as getting a humidifier to solve all your problems once and for all! There are a number of considerations to think about when choosing a humidifier for your asthma and allergy control. We did the research and here are the results.

Below, you will find a list of 5 best humidifiers from reputable international brands, all geared towards helping people with asthma or allergies, each with their pros and cons clearly stated.

Type of humidificationCoverage AreaNoise levelAir Purification
HuPro PremiumUltrasonic500 q. ft.Quiet – 30 dBYes
Venta LW45 AirwasherEvaporative860 sq. ft.Moderate – 45 dBYes
TaoTronic TT-AH018Ultrasonic450 sq. ft.Quiet – 35 dBNo
Levoit LV600HHUltrasonic753 sq. ft.Quiet – 35 dBNo
Boneco Humidifier S450Steam860 sq. ft.NoisyNo
Best Humidifiers For Asthma and Allergies

You’ll also find a buyers’ guide where you can read our rationale when deciding how to rate these products, and hopefully you can use it yourself when making future purchases.

In a Hurry? This Is Our Winner!

HuPro Premium Ultrasonic Cool And Warm Humidifier

Best Overall Humidifier For Asthma And Allergies

Product Overview

  • Coverage area: up to 500 sq. ft./ 47 sq. m
  • Water tank capacity: 1 gallons /4 litre
  • Running time: 30 hours
  • Dimensions: 14” x 11.2” x 10.5”
  • Weight: 8.48 lb

The HuPro Premium Ultrasonic Cool and Warm Humidifier is a dual mist humidifier that can cover an area up to 500 sq. ft. with its 4 gallon water tank. This large capacity humidifier has a running time of 30 hours between refills allowing users to use it through the night without waking up to refill it. If it does run out of water during the night, the auto shutoff feature kicks in, ensuring the safety of the unit and the user. As an ultrasonic humidifier, this model is also very quiet, registering only about 30 dB on the highest speed setting. This makes it an ideal choice for babies, seniors and sensitive sleepers.

In terms of functionality, the dual mist feature allows users to choose between cool or warm mist depending on their preference for the day. The smart humidification system incorporates three types of humidity control, auto mode, constant humidity and 5 speed levels. There is also an essential oils tray for homeowners who love to indulge in some aromatherapy at the end of a tiring day.

One particular feature that caught our attention was the triple purification unit that consisted of  a ceramic filter, UV light and air ionization. The ceramic filter contains active carbon and mineral pellets that will absorb impurities from the water as it passes through the filter resulting in cleaner and fresher air. The great thing about this filter is that it never needs replacement. Another feature that aids the cleansing of air is the air ionization. It produces 300 million cleansing negative ions per minute to decontaminate the water of fungus, virus and fungi. Combine that with an UV light that prevents odor in the water and you have a winner!

For ease of use, I really love that it is a top refilling humidifier because that is just so convenient for homeowners to refill without much effort and without any mess. The water tank also has an extra-wide opening for easy filling and cleaning. 

One gripe I have with this humidifier is that the mist shoots straight up and some droplets will just drop down and wet the surface the humidifier is sitting on. It would have been better if the mist can be directed away from the humidifier and further away. It still does a good job but users will need to make sure they protect the floor with a rug or a tray so that water does not collect. Besides wetting the floor, this also causes the humidistat to register a higher humidity than what the room really is.

Pros

  • Quiet
  • Auto shut off feature
  • Triple purification feature
  • Good coverage area
  • Easy to refill water and clean

Cons

  • Tends to wet the surface/floor that it sits on
  • Humidistat can be inaccurate because the mist is saturated near the unit

What the fans love: “Easy to clean due to the removable water bin. Virtually silent. No fans or other noise. Love the little warming tray to put some scented oil. Keeps the master bedroom humidity at 45% ( up from 33% naturally ) and has solved respiration problems due to dry air. Bought a second one for the office.”


Best Humidifier For Asthma & Allergies Buyers’ Guide

Humidifiers can come in all shapes and sizes each with its own pros and cons and this can be confusing for the homeowner who is choosing a humidifier for the first time. This is made even more complicated if the homeowner or his/her family members are suffering from asthma or severe allergies. Our buyer’s guide will highlight the important features to consider before making your purchase.

Are Humidifiers Good For Asthma?

The main job of our nose and airway is to humidify and warm the inhaled air. During the colder seasons, inhaling the cold and dry ambient air causes the surfaces of our airway and nose to lose moisture and heat more easily due to the temperature and humidity differences.

Cold dry air leads to dehydration at the surfaces of our respiratory systems and surface dehydration causes a wide range of harmful effects to our airway. These effects include degeneration of cells and over-stimulation of the immune system leading to heightened responses to the cold dry air. These heightened responses manifest as asthma. 

When the airway surfaces are dry, it also increases the adherence of bacteria to the surface and allows greater penetration of foreign particles. All these further contribute to more symptoms of asthma or other respiratory disease.  

Arundel’s study in 1986 on indirect health effects also tells us that there is increased incidence of respiratory distress in winter. This is especially so when the humidity level goes below 20%.

Therefore, having a humidifier would be extremely useful as it can correct the humidity levels during the colder months which are also drier usually. 

What Kind Of Humidifier Is Best For Asthma?

There are 4 main types of humidifiers

  • Evaporative
  • Ultrasonic
  • Steam Vaporizer
  • Air washer

Evaporative

In essence, evaporative humidifiers work by evaporation of the water in the humidifier and releases it as a cool mist. Inside most evaporative humidifiers is a wick that absorbs the water in the humidifier. A fan then evaporates the water in the wick giving us water vapour and increasing the humidity in the room. For those who are unfamiliar with what a wick is, it is a porous cylindrical structure that has a large surface area which allows maximum water absorption and water evaporation.

The wick also acts like a filter to filter out any impurities or contaminants in the water being used in the humidifier. Due to the presence of this wick filter, the type of water used in an evaporative humidifier is less restrictive than an ultrasonic humidifier which does not use a filter. Generally, you can use normal tap water in an evaporative humidifier without any issues. Wicks are usually quite large in size and therefore you will find that most evaporative humidifiers are bulkier in size and also heavier.

Another advantage of evaporative humidifiers is that it can never over-humidify the air because it works by evaporation. If the ambient air is already saturated with water, evaporation will not be able to occur no matter how much the fan blows at the water. 

The purchase cost of an evaporative humidifier is usually the lowest among the different types of humidifiers but the operating cost is the highest from the replacement of wicks and filters. It is recommended that filters be replaced every 3 to 6 monthly depending on the usage of your humidifiers. Different humidifiers may also have different recommendations so it would be best to check in with the manufacturers if you are intending to get an evaporative humidifier.

Evaporative humidifiers also tend to be louder due to the running fan that is used to evaporate the water in the humidifier. Some humidifiers can register noise level up to 50 dB at their highest speed settings. If you are intending to use your humidifier in your bedroom or if you are very sensitive to noise then an evaporative humidifier may not be for you.

A evaporative humidifier is a good choice for asthmatics because it can improve the humidity of the room and reduce the amount of dry air in the room. However, because it is usually cool mist, it may not be good as warm mist which can heat up the air as well.

Steam Humidifiers/Vaporizer/Warm Mist

Vaporizer humidifiers basically boil the water in the humidifier into steam before releasing it into the air. As you can probably imagine, the mist from a vaporizer can get quite hot and hence it is also known as a warm mist humidifier. Vaporizer or warm mist humidifiers are very popular among homeowners suffering from allergies or asthma because the warm mist usually has a more soothing and comforting effect on sensitive airways than cool mist humidifiers. 

Due to the heating of the water in the vaporizer, most bacteria in the water are also eliminated and the mist coming from these humidifiers are generally cleaner and healthier compared to an ultrasonic humidifier. 

These vaporizer types of humidifiers are great for asthmatics! They convert the cool dry air into warm moist air that a person with asthma will feel the most comfortable with.

Ultrasonics Humidifier 

An ultrasonic humidifier is a nebulizer that uses high frequency vibrations to break water down into ultra-fine droplets which then get released into the air as a mist. Depending on the specific model, the mist may be a cool mist or a warm mist. An easy way to see if a humidifier is an ultrasonic humidifier is to see if there is a mist plume coming out from the model. If there is a mist plume, it is usually an ultrasonic humidifier. 

An ultrasonic humidifier does not have a wick like an evaporative humidifier and typically does not have any filter as well. As such, they are usually less bulky and lighter. However, because of the lack of a filter to absorb impurities and contaminants, it is recommended to use either distilled water or filtered water in the humidifier. If hard water such as tap water is used, ultrasonic humidifiers may dispel white dust into the air due to the mineral contents in the water. 

Ultrasonic humidifiers have the highest humidity output among all the types of humidifier because it actively breaks down water into fine droplets and forcefully discharges it into the air. Theoretically, there is the risk of over-humidifying the air but most humidifiers have an inbuilt humidistat to prevent that from happening.

In terms of price, ultrasonic humidifiers usually cost more upfront but have the lowest operating cost because there is no need for filter replacement every 3 to 6 months. 

An ultrasonic humidifier is also a suitable choice for asthmatics as it can usually put out both cool and warm mist. However, the white dust that it generates may cause worsening of asthma. Therefore, distilled or filtered water is highly recommended if anyone in the household is suffering from asthma or allergies.

 Air Washer

Air washers are 2-in-1 appliances that combine a humidifier and an air purifier together in one unit. Besides being able to control the humidity in the air, air washers also clean the air by filtering large particles, pollen and contaminants from the air. With a combination of these two functions, the indoor air quality in your house will be maintained at a comfortable and healthy level. For homeowners who are suffering from chronic allergies and asthma, air washers may be your best bet yet.

Evaporative HumidifierUltrasonic HumidifierSteam HumidifierAir Washer
Mode of humidificationEvaporation Ultrasonic vibrationSteamEvaporation
Cool/Warm MistCoolCan be bothWarmCool
Contains fanYesNoNoSometimes
Contains filterYesSometimesNoNo
NoiseNoisyQuietQuietNoisy
CostModerateModerateLowHigh
PortabilityModerateGoodGoodModerate
Suitability for
asthma and allergies
4/54.5/54/54.75/5
Comparison of types of humidifier

Is Cool Mist Or Warm Mist Better For Asthma?

Both types of mist are suitable as they will increase the moisture in the air. However, if you had to choose, warm mist is better for asthma. The heated moisture is more soothing and comfortable to the airway of people with asthma. By changing the cold dry air in the room to warm moist air, the airway becomes less sensitive and does not act up as much. 

How to choose humidifier infographic

Size Of Room

When choosing your humidifier, you need to find out the size of your room as accurately as possible to avoid disappointment. The easiest way to find out the size of your room is to measure the length and breadth of your room and then multiply them together.

Once you have an idea of the actual size of your room, you can look at the models of humidifiers that you are interested in. Almost all manufacturers will list down the coverage area of their humidifiers in the product overview. These give you a good indication of what size room the humidifier is best for. 

When looking at these values provided by the manufacturers, I would probably round them down by about 20%. For example, the manufacturer may say that the humidifier can cover an area of 1000 sq. ft. but I would take away 20% from that and estimate the coverage area to be about 800 sq. ft. This is because these values were probably measured in an ideal environment where there are no leaks or drafts in the room. In real life, we may have leaky windows, wall cracks, door gaps that may contribute to the loss in humidity.

Ease Of Maintenance

This refers to the ease of refilling water and the ease of cleaning. Most humidifiers will require a refill of water every 24 hour depending on the capacity of the water tank. For something that you have to do frequently, it makes sense to find a model that allows easy refilling that is fast, efficient and neat. Usually, a top refill model is easier to do refilling as you just need to cover the top lid and pour in water. Generally, bottom refills tend to be messier and more of a hassle.

Humidifiers usually need a good thorough wash once every week. Depending on the model of the humidifier, the cleaning may take anything from 10 minutes to 30 minutes. When choosing a humidifier that is easy to clean, avoid units with many components or units with many small parts that are difficult to access. Some models come with specialized brush to allow users to reach difficult to access areas. The water tank should have a large access hole which allows the users to place the whole hand in for easy scrubbing.

If a humidifier cannot be cleaned properly, there will be buildup of lime, mold and fungus and these particles can get released into the air when the humidifier is working. Ultimately, these particles are harmful to humans and even more so to asthmatics who already have sensitive airway.

Essential Oil Compatibility

When looking at alternative therapies for asthma, one cannot overlook aromatherapy. Aromatherapy using essential oils has gained traction in recent years for its therapeutic effects in many fields such as pain relief, mental wellness and so on. Asthma is also one of the areas in which essential oils may come in useful. 

Lavender oil can reduce swelling of the airway and decrease the chance of bronchospasms. Eucalyptus oil and tea tree oil not only reduce inflammation but also help to loosen up sticky mucus.. Clove oil, chamomile oil and thyme oil are also excellent choices for asthma sufferers.

Air Purifier Feature

For homeowners with asthma or allergies, the ability to clean the air thoroughly is always a plus point. Air purifiers have been found to help in relieving asthma symptoms in children. They can do so by removing the allergens from the air. Such allergens include pollen, dust and smoke. By removing these potential allergens there are less triggers for the homeowners who may be suffering from asthma. 

While having a separate air purifier would work, why not get a unit which has both humidification and air purification features? Air washers are combination units that can do both well and can be a great choice for those with asthma or allergies.

Noise Level

For many of us suffering from asthma, we usually get more symptoms during the night. This is likely due to the cooler temperatures we have at night. Therefore, we would most likely be using the humidifiers in our bedrooms while we sleep. Hence, having a quiet humidifier that runs silently is crucial for us to get a good night’s rest. When choosing quiet humidifiers, ultrasonic humidifiers and steam humidifiers are usually much quieter than their evaporative and air washer counterparts. This is because there are less moving parts in ultrasonic and steam humidifiers.

UV Light

Besides the usual wick filters, some humidifiers have additional methods of air cleansing. One such method is using UV light to sanitize the water in the humidifier. This process eliminates 99% of germs, bacteria, viruses, and mold lurking in the water. For anyone suffering from asthma or allergies, this will be one of the features to watch out for when getting a humidifier!


Best Humidifier For Asthma And Allergies Product review

Venta LW45 Airwasher Humidifier And Air Purifier

Best Humidifier with Air Purifier For Asthma And Allergies

Product Overview

  • Coverage area: 860 sq. ft. / 80 sq. m.
  • Water tank capacity: 2.6 gallons / 9.8 litre
  • Essential Oils Compatibility: No
  • Refilling: Top fill
  • Running time: 24 hours
  • Dimensions: 11.8” x 13” x 17.7”
  • Weight: 13 lbs

The Venta Airwasher is both a filter-free evaporative humidifier and filter-free air purifier, all in one lightweight unit. Featuring a 2.6 gallon water tank, the Venta LW45 is able to humidify dry room air while simultaneously purifying it in space up to 860 sq. ft. Using their disc technology, the Venta Airwasher is able to remove airborne pollutants down to 0.3 microns in size. For homeowners with asthma and allergies, this is an indispensable feature as the unit can remove dust, pollen and pet dander efficiently from the air. This effectively reduces most types of asthma/allergy triggers in the common household.

Besides being an air purifier, we should not forget that the main function of the Venta Airwasher is a humidifier. Using evaporative technology, it is able to keep the room humidity between 30% to 50% without any risk of over-humidifying the room. By keeping the room air moist, homeowners would also find it more comfortable on their nasal passages and airway. While not completely customizable like a unit with an inbuilt humidistat, homeowners can still choose the level of humidity by choosing between 3 fan settings. 

The Venta airwasher is also pretty user-friendly. It is a top fill humidifier that allows easy refilling of water into the water tank. While most humidifiers recommend the use of distilled water to prevent lime buildup or the discharge of white powder, Venta airwashers have no issues with using hard tap water. This is because they provide a conditioner to use every 7 days to prevent lime buildup. It also helps to keep the Airwasher clean and hygienic as well as improve the evaporation/humidification process by coating the Disc Stacks. Washing is also not difficult as you just need to rinse the parts under water to clean it up.

The one grip I have is the noisy fan at the highest fan setting. The noise level ranges from 24 dB to 45 dB. If used at the lowest setting, it is perfectly fine but when used at the highest fan setting, the noise level at 45 dB is the threshold at which it might disturb you and your family.

Another limitation is the higher price point of this unit compared to other humidifiers on this review. It might not be suitable for homeowners on a budget. However, if your budget allows, this is a fantastic combo unit that is well worth your buck. WIth good humidification and air purification feature, this unit is easy to use, easy to maintain and perfect for homeowners with asthma or allergies.

Pros

  • Purifies air down to 0.3 microns in size
  • Has conditioner that prevent lime buildup
  • Convenient. Able to use hard tap water
  • Easy to refill with top fill design
  • Easy to clean and maintain

Cons

  • High price point
  • Not compatible with essential oils
  • Noisy fan

What their fans love: “No allergies- minimizes booger’s! We bought several of these for our whole house for wildfire season and they work great. Now we live in southern AZ and humidity levels can be 3%… the venta keeps all of us moist and breathing clean air. Great product. Once I tripped on the cord and customer service helped me fix it fast. Literally the best air purifier and humidifier ever – no water spots and it doesn’t get that humid. “


TaoTronics TT-AH018 Warm And Cool Mist Humidifier

Best Quiet Humidifier For Asthma And Allergies

Product Overview

  • Coverage area: 450 sq. ft. / 40 sq. m.
  • Water tank capacity: 1.45 gallons / 5.5 litre
  • Essential Oils Compatibility: No
  • Refilling: top fill
  • Running time:45  hours
  • Dimensions: 10.2” x 8.07” x 12.6”
  • Weight: 6.8 lbs

The TaoTronics TT-AH018 warm and cool mist humidifier is an ultrasonics humidifier that can produce both warm and cool water vapor to humidify the room. While not technically a steam vaporizer, it does contain a heating element to produce warm mist that can reach temperatures of 60°C / 140°F. As an ultrasonic humidifier, there is no fan required and hence this unit is pretty quiet. It registers about 35 dB while it is operating and is a good fit for a bedroom.

With a coverage of about 200 to 450 sq. ft., this humidifier is good for a medium sized room and can run up to 45 hours between refills. For refilling, this is a top fill humidifier and refilling is easy and convenient. Just pull up the top lid and pour water in. 

Other features include a touch screen LED display for style and easy handling. The settings may be adjusted to customize mist output, mist temperature and also the humidity level. As with any good humidifier, this model comes with an inbuilt humidistat that allows it to determine the room humidity and adjust the humidity according to the plant’s needs There are also two 360° nozzles which enable the user to direct the mist where you want it.

As with most ultrasonic humidifiers, there will be white dust generated from this unit because of the mineral contents in the water. As much possible, it is advised to use distilled or filtered water rather than hard water. That might be a little bit more troublesome for users but if you do not mind cleaning the humidifier slightly more frequently, hard water is fine as well!

Pros

  • Has warm and cool mist for different seasons
  • Able to customize mist temperature to suit one’s needs
  • Quiet during operation
  • Long running time between refills
  • Top fill makes for easy refilling

Cons

  • Not compatible with essential oils
  • Generate white dust during operation

What the fans love: “This humidifiers works excellent for my large master bedroom. It has a large water tank so I do not need to change the water everyday. The part I love most is that it comes with sleeping mode which is really quiet. The design is awesome. It is easy to set up with a phone and to clean inside of the tank. Highly recommend this humidifier. “


Levoit LV600HH Hybrid Ultrasonic Humidifier

Best Portable Humidifier For Asthma And Allergies

Product Overview

  • Coverage area: 753 sq. ft. / 70 sq. m.
  • Water tank capacity: 1.5 gallons / 6 litre
  • Essential Oil Compatibility: Yes
  • Running time: 24 – 36 hours
  • Dimensions: 11.3’ x 7’ x 10.5’
  • Weight: 4.92 lbs

The Levoit LV600HH Hybrid Ultrasonic Humidifier is a dual mist humidifier that can put out both warm and cool mist depending on your settings. Covering an area of 753 sq. fr, this is an extremely powerful humidifier that can work well in a large room. Powered by ultrasonics, this humidifier does not have a fan and is whisper quiet. It registers a mere 35 dB when it is operating on the highest setting and it is barely discernible. This makes it a perfect choice for a humidifier in a bedroom.

In terms of functionality, this humidifier comes with an auto mode which does the heavy lifting for you by automatically adjusting the humidity to a comfortable level. However, if you would like to customize the humidity level yourself, you can also pick an exact percentage and adjust it until you find your preferred humidity level.

For homeowners who sometimes forget to do a refill, you will really appreciate the auto shutoff that kicks into place when there is no more water left in the tank. For users who use aromatherapy, you will be thrilled to know there is an aroma box for your essential oils in this humidifier.

Regarding the ease of use, I have mixed feelings about the Levoit LV600HH. The remote control is a nice feature which allows homeowners to adjust the settings from the comfort of their couch or bed in the middle of the night. 

However, I really have an issue with the water refilling. The water cap is on the base of the water tank. So during a refill, you have to remove the tank, turn it upside down to fill it up and all the while dripping water everywhere and then turn it back again before inserting it back to the humidifier.

As with most ultrasonic humidifiers, it is recommended that you use distilled water or filtered water instead of tap water. Tap water is considered hard water that contains traces of mineral deposits. When used in an ultrasonic humidifier, it releases white dust into the air which may be inhaled by the user. Also, hard water will cause rapid buildup of mineral deposits in the humidifier resulting in more frequent washes. And this is one heater which does require a fair bit of work when washing. There are multiple components which require cleaning and disinfection so each wash can take about 20 minutes if you are thorough. 

All in all, a nice sleek humidifier with numerous awesome features which does a great job in humidification. However, it does require a bit more work for maintenance.

Pros

  • Large coverage area
  • Dual mist function
  • Quiet – 35 dB
  • Long running time
  • Auto shutoff function
  • Aroma box for aromatherapy
  • Touchscreen LED display

Cons

  • Requires distilled or filtered water for best results
  • Refilling water is messy
  • Washing is somewhat tedious

What the fans love: “First, I love this humidifier. We have 4 different humidifiers in our home, and this one is by far our favorite. The settings are easily adjustable, no leaks, it’s stable, it’s quiet, no problems. And the customer service is great!”


Boneco Digital Steam Humidifier S450

Best Steam Humidifier For Asthma And Allergies

Product Overview

  • Coverage area: 860 sq. ft. / 80 sq. m.
  • Water tank capacity: 1.5 gallons / 6 litre
  • Essential Oils Compatibility: Yes
  • Refilling: Bottom fill
  • Running time: 24 – 36 hours
  • Dimensions: 14” x 9.5” x 13.2”
  • Weight: 10 lbs

The Boneco Digital Steam Humidifier is a steam vaporizer that utilizes steam technology to convert water into steam before being released into the air. As with all steam humidifiers, this process of boiling removes the bacteria and viruses from the water resulting in clean and healthy humidification. In terms of safety, it is always wise not to place steam humidifiers too close to children. However, the Boneco humidifier is safer than other models with its clear mist technology that is warm to touch rather than burning hot. It is one of the safest steam humidifiers on the market.

As the name suggests, there is a multifunctional digital display that allows users to make changes with ease and convenience. The different modes available on this humidifier are Auto mode, Sleep mode and Econ Mode. The most convenient mode is the Auto mode which will humidify the room to relative humidity of 50% when used. This is the preset level but users can also change it. Essentially, it allows the user to just select a level and just leave the humidifier alone to do its job. In order for this to work, this humidifier also has an inbuilt humidistat which it uses to detect the humidity level.

Another awesome feature that is not commonly present in other humidifiers is the Decalcification mode. This is an auto cleaning mode that enables simple cleaning and decalcification of the steam tray, water base and steam pipe. You just need to dissolve the CalcOff decalcification agent into 1L of hot water and pour it into the water base. Run the Decal mode and let it run.

Other features of this humidifier include an essential oil tray, On/Off timer and an Anti-mineral pad which absorb a large portion of lime during operation and reduces the calcification in the steam tray.

The limitations of this heater include a high price point and some users have complained that the water tank tends to leak a bit which may result in a puddle of water if used for prolonged periods. Last of all, this humidifier can get somewhat noisy at the highest fan setting so it would not be suitable for bedrooms and study rooms.

Pros

  • Mist is warm rather than burning hot hence safer for children
  • Digital display that is user friendly
  • Auto mode is easy and convenient for user
  • Compatible with essential oils
  • Auto cleaning mode makes cleaning easier and faster

Cons

  • High price point
  • Water tank tends to leaks with prolonged usage
  • Noisy fan

What their fans love: “I have never owned a humidifier that has given me better results. Yes it is one of the most expensive I’ve ever seen (for a small room-size unit) but when you consider that it does what it should without making the air less healthy, that it is easy and cost-effective to maintain, and it is convenient to use the bottom line to me is that it’s worth it. “


Frequently Asked Questions (FAQs)

Q: Where is the best place to put a humidifier?

A: Long story short.

  • Placement in the middle of the room leads to fast and even humidification
  • Keep humidifier 14 -17 feet (4-5m) away from walls and furniture
  • Place 3 feet (1 m) away from the bed 
  • Elevate the humidifier 2 feet off the ground
  • Keep the windows and doors shut when using the humidifier
  • Avoid running a humidifier and air purifier in the same room
  • Avoid placing humidifier in direct sunlight

If you like the full story, check out our guide on the best practices when positioning your humidifier!

Q: What is the ideal humidity level at home?

A: The ideal range you want to keep your home at is between 40% to 60% relative humidity. This is the best range of humidity to maintain comfort at home and also to reduce direct and indirect health effects. For more information on how poor humidity levels can affect your health, check out our post on the harmful effects of humidity!

You do not need to use the humidifier for your plants during the night as there is much lesser evaporation with the lower ambient temperature. Excessive moisture in the soil can also cause damage to the roots which is harmful to the plants. 

Q: Where is the best place to put a humidifier?

A: Long story short.

  • Placement in the middle of the room leads to fast and even humidification
  • Keep humidifier 14 -17 feet (4-5m) away from walls and furniture
  • Place 3 feet (1 m) away from the bed 
  • Elevate the humidifier 2 feet off the ground
  • Keep the windows and doors shut when using the humidifier
  • Avoid running a humidifier and air purifier in the same room
  • Avoid placing humidifier in direct sunlight

If you like the full story, check out our guide on the best practices when positioning your humidifier!

Q: Do humidifiers kill airborne viruses?

A:  No. Humidifiers do not kill viruses per se. However, maintaining the indoor humidity levels between 40% to 60% will lower the survival rates of viruses. Viruses thrive in very dry (blow 20% relative humidity) or very moist conditions (above 80% relative humidity). Therefore, we always see an uptake of influenza during the winter seasons. The virus simply survives longer on surfaces and has more chances to infect people. By increasing the humidity with a humidifier, the virus does not survive as long.

Q: Is it advisable to run a humidifier and an air purifier together in the same room?

A: Yes and No. The moisture from the mist coupled with the residues in the air purifier filter may become a breeding ground for mold and fungi if the filter is not maintained regularly. However, if proper maintenance is done regularly for the humidifier and air purifier then it is fine. Also, humidifier and air purifier combo units are also fine since you can wash their shared filter at the same time. 


Recap Of The Best Humidifier For Asthma And Allergies

Type of humidificationCoverage AreaNoise levelAir Purification
HuPro PremiumUltrasonic500 q. ft.Quiet – 30 dBYes
Venta LW45 AirwasherEvaporative860 sq. ft.Moderate – 45 dBYes
TaoTronic TT-AH018Ultrasonic450 sq. ft.Quiet – 35 dBNo
Levoit LV600HHUltrasonic753 sq. ft.Quiet – 35 dBNo
Boneco Humidifier S450Steam860 sq. ft.NoisyNo
Best Humidifiers For Asthma and Allergies

Wrapping it up

Out of the 5 products we reviewed, the HuPro Premium Ultrasonic Humidifier was our favorite humidifier for asthmatics and allergies. It strikes a good balance between functionalities, ease of use and price. With the ability to purify the air 3 ways and putting out a decent amount of humidification as well, homeowners have with them an rounder humidifier that can serve multiple purposes. All in all, this humidifier gets the job done with minimal fuss and is a great deal for homeowners!

The Venta LW45 airwasher is a close second mainly due to the higher price point. However, it has good humidification and air purification featuresI t is easy to use, easy to maintain and perfect for homeowners with asthma or allergies.

Click here to get one now!

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