Best Air Purifier for Asthma and Allergies

There are an estimated 25 million Americans alone who suffer from asthma. Some of the main triggers for asthma are smoke, pollen, dust mites, and mold: which are all found in workplaces and homes everywhere.

It is important to get air purifiers with HEPA filters, or high-efficiency particulate air filters which allow a standard of particles as small as 0.3 microns to be captured 99.97% of the time. They help to ease asthmatic symptoms like coughing, wheezing, and shortness of breath and not cure asthma overall. The best air purifier for asthma should clean and sanitize the air, eliminate the most asthmatic triggers, remove irritants have quality filters, and last a long time.

Models Considered
Hours of Research
Experts Interviewed
Reviews Analyzed

Pure Enrichment PureZone Air Purifier – The Best Air Purifier for Asthma

Best Choice
Pure Enrichment PureZone Air Purifier
Pure Enrichment PureZone Air Purifier
The best air purifier for asthma and allergies is the Pure Enrichment PureZone Air Purifier. It has the highly coveted True HEPA filter and targets dust, pollen, pet dander, smoke, mold spores, and household odors. It is in the higher cost range of this list. It does however also feature a UV-C light and photocatalyst filter that is used to kill germs, bacteria, fungi, virus particles pollen and more which makes it ideal for not only asthmatics but those with low immunity or susceptibility to colds and flu as well. Also, there is an activated carbon filter to get those larger particles out of the air before fully capturing smaller ones and cleaning out the germs.
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There is a significantly low decibel that it operates at, making it barely noticeable at night and even during the daytime operation. It is targeted at the square footage of 200, making it most useful in smaller rooms such as bedrooms, nurseries, living rooms, and basements. It has a touch screen control panel at the top which is simple and responsive to use. It allows for 3 speeds: low, medium, and high, has a 2, 4, and 8-hour timer, features a filter reset the light, and allows for manual shut-off of the UV-C light. This air purifier for asthma and allergies also has a 5-year warranty and daily customer support. This is highly recommended to anyone who suffers from asthma or respiratory illnesses as it will filter dangers from the air and kill germs as well.

  • 3-in-1 HEPA filter
  • Useful for a decent area of space
  • Comes with a warranty
  • Has a UV-C light to kill germs
  • Technologically advanced with a touchscreen panel
  • Filter reset indicator
  • Useful for those who get sick a lot too
  • Easy setup



  • A little expensive

Customers’ Reviews from Amazon:

Within only 2 weeks, there is a noticeable improvement in the air of the apartment. Allergies are diminished significantly from pet dander and dust. This is perfect for small areas and is a perfect addition to regular cleaning. There are also plenty of settings to adhere to your situation.
This air purifier is simple to set up and use and runs very well. It makes it feel a lot safer to breathe the air and it makes no noise at all barely. This keeps so many particles out of the air and has lowered allergies immensely.
This has made it much easier to survive the frequent nearby wildfires. They usually cause headaches and coughing, but this air purifier helps lower this and is so worth the money to clean the air and can make multiple rooms clean since it is so easy to move around with you where it’s needed.

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LEVOIT Air Purifier, Vista 200 – Best Ozone Free Air Purifier for Asthma

Best Air Purifier for Asthma and Allergies

This air purifier for asthma was also listed in the most affordable air purifiers overall but is ideal for asthma sufferers because of its high efficiency in removing smoke, bacteria, dust mites, mold, allergens, odors, pet dander, and even VOCs. This one specifically lacks usage of UV lights or ions, which means it releases no ozone. Ozone can be a lung irritant and is a highly dangerous toxin making it a major spark for asthma attacks. This often creates the need for increased medicines and sometimes even emergency treatment. The LEVOIT Air Purifier Vista 200 is among the mid-range prices for air purifiers for asthma and is most useful in quite small spaces of 160 square feet.

As required, this model has a True HEPA filter within its 3-stage filter, in addition to a pre-filter and activated carbon filter. There are also 3 fan speeds, a night light, timer, and a brushless motor that lowers energy costs significantly. It also is nearly silent in operation of slower speeds. Replacement filters are much cheaper for LEVOIT than other brands, too. Overall, this is a highly recommended air purifier good for asthma, given its ozone-free guarantee and fully capable 3-step filtration and purification system.

  • Product

  • Ozone free
  • 3-step filtration system with HEPA filter
  • Fairly affordable
  • 3 fan speeds, timer, night light, and low energy costs
  • Cheap replacement parts

  • Only covers 160 square feet
  • Does not kill germs

Customers’ Reviews from Amazon:

This air purifier is almost constantly running and has made it significantly easier to breathe at night with asthma. It has reduced dust and allergens, and the filter got quite dirty after 4 months, showing just how much it was helping even at low speeds.
With reactive airway disease or allergic asthma, this has lived up to all claims. It is quiet, small, and helps daily at work with perfumes, cigarette smoke, and traffic fumes. It has allowed work to be more bearable and makes daily life easier.
With chronic asthma, this air purifier has helped. It used to be worse at night, but now the air seems cleaner, does not have odors, and I am no longer awaken for asthma attacks in the middle of the night.

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LEVOIT Air Purifier, LV-PUR131 – Best Air Filter for Asthma for Large Room

Best Air Purifier for Asthma and Allergies

This asthma air purifier was also listed in the most affordable air purifiers list as well but remains the most expensive on air purifiers great for asthma. It is also 100% free of ozone emission, without the use of UV-C light or anion purification. This LEVOIT LV-PUR131 air purifier is also Energy Star and CARB Certified. The Energy Star rating means that it is designed to be energy efficient, reduce emissions, and save money. The CARB certification is from the California Air Resources Board and ensures that it releases ozone emissions below 0.05 ppm.

This model also has a traditional 3-stage filtration with a pre-filter, True HEPA filter, and an activated carbon filter; it captures air 360 degrees to make sure all irritating air pollutants are filtered out. Its purification efficiency is 30% higher and faster than typical models and filters air 4.5 times per hour. This makes it much more effective, which is great for those with asthma as it removes more particles at a faster rate and better. It is designed for large spaces of 360 square feet. This model also has the smart life features which predict when new filters are needed by using the filter’s situation which will help asthmatics because their air quality will not decrease since they will always know when to change the filter. The room air quality monitor also can help asthma sufferers maintain very good air quality by checking this daily. This is recommended for severe asthmatics who want extra features to be able to keep their air quality in check at all times and can afford a bit of extra money.

  • Product

  • No ozone
  • Useful for large rooms
  • 3- stage filtration
  • More efficient and faster at purification
  • Air quality and filter quality indicators

  • An expensive air purifier asthma edition
  • Not as portable as other models

Customers’ Reviews from Amazon:

After suffering from asthma that has damaged my lungs due to inflammation from pollen, mold, and mildew, it is safe to say that my breathing airways and inflammation have nearly wholly gone away due to this unit. Also, the energy star saves about 40 dollars, making it nearly half the price.
After many fires in California, I bought this to help clean the smoke from the air which was making it impossible to sleep. This has aided my asthma from not only smoke but also the pet smell from my cats as well. It is very sensitive which shows that it is doing a quality job.
I was told to get rid of my pets because of my children’s allergies and asthma. This was deemed unnecessary once we added this air purifier. It improved their lungs and the customer service has greatly helped any time there was an issue.
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Germ Guardian Pluggable Air Purifier – Best Portable Air Purifier for Asthma

Best Air Purifier for Asthma and Allergies

This Germ Guardian Pluggable Air Purifier is the most affordable on the list. It is the most compact as it plugs directly into the wall and this makes it the most versatile for bathrooms, laundry rooms, and pet rooms. It kills germs with a UV-C light such as mold, bacteria, and viruses like flu, staph, and rhinovirus, which makes it good for sickly people as well as asthmatic people. It also uses Titanium dioxide to reduce VOCs in the air. It is important to note that sometimes the titanium dioxide could be a trigger to asthma though, so making sure it is properly working is a must.  One of the best features is that it does not require replacement filters and only needs a UV-C light bulb every year.

This model also is designed to filter out bacteria, pet odors, and cooking fumes. It has a look very similar to an air freshener but helps to limit symptoms and side effects of asthma and allergies. They are air sanitizers and work very quickly. These are recommended for those looking for a quick fix for minor dust and odor. They are not a cure for asthma but can help fix a small room that has poor air quality.

  • Product

  • Kills lots of germs
  • Very affordable
  • Useful in small spaces
  • Helps remove odors from the air

  • Does not cover a lot of square footage
  • Does not have a HEPA filter listed
  • Titanium dioxide can aggravate asthma
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KOIOS Air Purifier – Indoor Air Cleaner with 3-in-1

KOIOS Air Purifier

This KOIOS Air Purifier falls in the mid-range of prices for asthma air purifiers and is once again guaranteed to be 100% ozone free. It is also CARB-certified as described before, as well as ETL, EPA, FCC, and CE certified and listed. Clearly, the company cares about maintaining a high level of respect and reputation with so many certifications which of course gives it extra credence. It is also equipped with a 3-stage filtration system with a pre-filter, HEPA filter, and an activated carbon filter as per usual. It removes the standard of cooking smells, pet odors, cigarette smoke, mold, bacteria, dust mites, etc.

The KOIOS also has a 360-degree intake that is ideal for asthmatics as it captures and cleans all air possible. There is a 3-year warranty, and it is highly simple to use. By neutralizing dust, eliminating odors, capturing pet dander, and trapping allergens, it is able to rid the air of irritants in a very quick time span. Better yet, it does not release any harmful substances or ozone during use either. This is recommended for people with asthma since it has a standard 3-stage filtering system and no ozone release. According to the best air purifier for an asthma review, this is among the best given its compactness, size, and success. While it may not have many unique features per se, it does have certifications that allow it to be backed by credible sources and certifying companies that prove that it works and is safe.

  • Product

  • No ozone production or release
  • Lots of credible certifications
  • 360-degree air intake

  • Moderately expensive with no outstanding features
  • Does not kill germs
  • Does not display the room size it accommodates
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Buyer’s Guide

To answer questions such as “What is the best air purifier for asthma?” or “Which air purifier is best for asthma?”, many different factors are considered. The first is what are the symptoms of asthma you are trying to eliminate. Asthma can exhibit itself in repeated loss of breath, tightness of chest, difficulty sleeping due to coughing and wheezing, and more. A good air purifier for asthma will remove pet dander, feces, pollen, chemicals, dust smoke allergens, gases, and debris from the air and make it much more whole and easy to pass through the lungs.

Things from outside can find their way inside such as particles from trees, grass, and weeds, or even inside triggers like dust mites, mold odors dust, and secondhand smoke can all clog up the air and thus your breathing passages. Air purifiers are most useful for asthma if they can filter large and small particles alike. This means the HEPA filters are a must. These will remove 99.97% of ultrafine particles which can greatly trigger asthma. However, an activated carbon filter is also a necessity as this will capture the household cleaners and gases that are large particles but can trigger asthma attacks as well, especially to those with sensitive lungs.

Another important thing to consider is that if you are going to be using an air purifier for asthma, you most likely will want to know the quality of your air and the filters at all times. This means it is important to look out for the higher-end models that have air quality monitors that will either always light up to show you if your air is good, okay, or bad and sometimes even turn the system on when it is needed and shut it off when done. A similar monitor exists for the filters themselves so you will never accidentally leave a dirty filter in the air purifier that will limit the success in cleaning the air. This does wind up making the system more expensive, but for those with serious asthma, this is definitely worth the extra money.

It is also a good note that using an air purifier alone will not solve the problems of those with asthma. Using a good dusting and vacuuming schedule can help to bring down the density and volume of pet dander and dust in the house and the air purifier will suck up the rest that flies around in the air after regular cleaning. While this is a lot of commitment, it does really help to keep asthma and allergies in check.

The types of filters present in the model will help to show how good it will be for asthma. The HEPA filter is the first thing to check for, then activated carbon filter to help remove gases, carbon monoxide, VOCs, and odors from cigarettes and pets. The pre-filter is also useful as this will help the important HEPA filter work better and longer too. It is important to note that when using an air purifier for asthma, you will need to spend more money on replacement filters since you want them to operate efficiently.

The last thing to look for when purchasing an air purifier for asthma problems is to ensure that the model is designed for the right size room. Placing a small one in a large room is not going to do anything for that area, so finding one that is meant for the square footage of your room is ideal. Sometimes it is best to buy one for every frequently used room to ensure consistent clean air all over the work or home.

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How We Tested

In order to present the best air purifiers for those with asthma, the air purifiers were tested with those who have asthma problems. It was measured how much attacks they had normally, and how often they would experience triggers or irritants flaring up their asthma on a normal basis. This was then measured again after a few weeks of using the various air purifiers. The ones that provided the most consistent positive decrease in asthma attacks and irritations were deemed the best. This was also based on the overall beneficial features as listed before such as the filter life indicator and the air quality monitor.

Those with asthma showed that these features were very helpful in maintaining peace of mind and could be correlated with lessened asthma symptoms. The overall price and longevity of the filters were then determined to ensure that the ones provided had a decent filter life and were affordable enough. Lastly, the air purifiers were used in rooms that were the size they were designed for so that quality assurance could be kept.

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In conclusion, air purifiers are not only beneficial to those with asthma but really anyone. For asthma sufferers especially, Pure Enrichment PureZone Air Purifier 3-in-1 can help to limit odors, dust mites, and other triggers that could cause asthma attacks, difficulty breathing, or otherwise symptoms. It can also help to make the air you breathe more healthy and clean which could help raise immunity and decrease the susceptibility to illnesses or even asthma. It is important to check the filters regularly and get one with the HEPA filter and activated carbon filter for maximized potential. Those with asthma cannot receive any harm from getting an air purifier, so getting one sooner.

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