Best Air Purifiers for Allergies and Asthma

Did you know that your house can be squeaky clean yet full of allergens that trigger allergies and asthma? Have you tried the best air purifiers for allergies and asthma? Let me explain.

Although you clean your home regularly, there is one thing you overlook: the air. The air inside your home is full of dust, smoke, household odor, and other allergens. In fact, according to the Asthma and Allergy Foundation of America (AAFA), the level of pollutants indoors is two to five times higher than outdoor levels

So, what should you do? See tips and guides

Along with dusting, cleaning the surfaces, and keeping the room ventilated, you can use the best air purifier for allergy and Asthma. You know, those appliances that use filters and fans to remove allergens and other particles and circulate clean air back. Using an air purifier makes sure you breathe fresh air.

Here is the deal, though: not all air purifiers are designed the same. Don’t buy just any purifier. You need a purifier that is specially made to eliminate asthma and allergy-causing agents.

How do you tell the best air purifiers for allergies and asthma?

Please read on, and you will learn all about it. We have reviewed ten of the best air purifiers for asthma and allergies. Highlighted some of the factors you should consider when choosing the best air purifier for your condition. We shall also look at the connection between allergies and asthma.

What is the connection between Allergies and Asthma?

Asthma and allergies are two of the most common persistent diseases worldwide. According to experts, these two conditions often occur together and are known to cause respiratory symptoms such as airway congestion and coughing. However, each condition has specific unique symptoms.

Allergies may cause the following symptoms:
  • Itchy and watery eyes
  • Sneezing
  • Running nose
  • Hives and rashes
  • Itchy throat
On the other hand, asthmatic people do not experience the above symptoms. Asthma causes:
  • Tightens of the chest
  • Breathlessness
  • Wheezing
  • coughing

What factors should you consider when choosing the Best Air Purifier for Asthma and Allergies?

1) Coverage area

The coverage area refers to how big a room can be purified by a particular purifier model given its capability and capacity. It is essential to know the size of the place you want to purify because the coverage area varies depending on the model.

So how do you determine the size of your room?

Let’s revisit our lessons, shall we? Don’t fret, it’s simple grade four mathematics.

Using a tape measure to measure the length and the width of your room. Then multiply the two.

Let me explain further.

If the length of your room is 4square feet and the Width is 3 square feet, it will be 4*3= 12square feet. (Told you, simple mathematics)

When choosing the best air purifier, check the specifications, and ensure it can cover your home. We recommend you chose one that has a slightly higher coverage.

2) HEPA Filter

The type of filter used by a purifier is critical. When shopping, choose a model that has HEPA Filtration technology. It is best for allergies and asthma.

HEPA stands for High-Efficiency Particulate Air. This filtration technology is known for removing even the smallest of particles and allergens.

HEPA collects particles using a highly dense paper filter. The filter traps the particles, stopping them from recirculating into the room, thus clean air.


The best way to measure an air purifier’s capacity is by its Clean Air Delivery Rate (CADR). CADR is the quantity of the cubic meter per minute that a purifier can effectively purify.

Since different allergens cause different reactions, purifiers can have different CADR specifications. They may have ratings for dust, pollen, and smoke.

For the best air purifier for allergies and asthma, a purifier with high ratings on dust and pollen is the best.

4) Noise Level

Although noise doesn’t cause allergies or asthma, it is important to choose a purifier with a low level of noise. You know, one whose operational level doesn’t interfere with a conversation.

Here are the best air purifiers fit for allergies and asthma in the market.

1) RabbitAir MinusA2 Ultra Quiet HEPA Air Purifier

RabbitAir MinusA2 Ultra Quiet HEPA Air Purifier


When you are shopping for an air purifier, especially one intended to solve health problems like allergies and asthma, the filtration capacity is key. Typically, the more the filters, the more the filtration stages and the cleaner the air. Well, the RabbitAir minusA2 comes with advanced six stages purification HEPA filtration. It eliminates up to 99. 7% of allergens trapped in the air. It’s practically impossible to escape all those filters, right?

Did I mention this product has a customized odor remover? Yeah, you do not have to open the windows every time you are cooking, or your partner smokes in the next room. This purifier traps and reduces all kinds of odors.

In addition, the Rabbit Air minus A2 has a smart light sensor. All you need to do is put it on, and it will do the rest for you. It automatically switches to sleep mode when the room becomes dark and resumes activity when there is light.

What’s more?

This allergy air purifier is ultra-quiet. You can comfortably nap. However, this air purifier has a low rating CADR meaning it takes time to clean the air completely. For the 815 square feet that it covers, it only exchanges air once in 30minutes.


  • Six stage air filtration process
  • Smart light sensor
  • Quiet operation


  • Mid-range CADR

Click here to see its current price 

2) Coway AP-1512HH White HEPA Air Purifier

Coway AP-1512HH White HEPA Air Purifier

This 4-stage air purifier has received lots of positive reviews for the last two years and ranked among the best air purifiers. Perhaps because it shows no mercy for allergens and other contaminants.

This home appliance has a four-stage filtration system (pre-filter, deodorization filter, true HEPA filter, and vital ion)  that catches and eliminates up to 99.97% of pollutants in the air including pollen and other allergens. It also reduces odor and evaporative organic compounds. During the four-stage filtration, the Vital Ion reduces the particles in the air by generating an electrochemical. This explains why this product has won many awards, including the British Allergy Foundation Approval.

In addition, the Coway AP1512H comes with a powerful pollution sensor that communicates air quality in the house. How? It has a bright-colored LED that lets you know how dirty or clean your room is. Still, it has a filter replacement indicator that reminds you to change filters.

Moreover, this purifier has a timer that lets you set the hours of operation, depending on your needs. The inbuilt timer allows the purifier to run up to eight hours before it automatically powers off. Also, you can adjust the air output as it has three fan speeds.

This product is designed for middle-sized spaces and can cover up to 361sq. Ft. With its CADR rating of 246 dust/233smoke/240 pollen. It will also be impressively quiet at it.


  • High performance
  • Robust 4 stage filtration process
  • Pollution sensor
  • Good CADR rating
  • Quiet operation


  • Small coverage

Click here to see its current price 

3) Honeywell HPA300 True HEPA Purifier for Allergies and Asthma

Honeywell HPA300 True HEPA Purifier for Allergies and AsthmaAs the name suggests, the Honeywell HPA300 can cover a large room up to 465 square feet.

With a turbo clean setting and three air cleaning levels, this product reduces pet fur, dust, pollen smoke, and other pollutants. It also reduces odor and traps certain germs.

In addition, it comes with a true HEPA allergen that captures up to 99.97% of airborne allergens as small as 0.3 microns. Still, this purifier filters and circulates air up to 5 times an hour. You can rest easy with an assurance of fresh air in your home.

For better performance, you should replace the filters every three months. How will you tell that the filters need replacement? This product comes with a filter check/ reset light that will inform you when it’s time to change.

The CADR rating is at an incredible 320 dust/300smoke/300pollen, which means honey well HPA300 is thorough.

The only downside of this product is the noise level. It is a bit high, but you can get used to it with time.


  • True HEPA filter
  • High fan power
  • Good CADR rating


  • A bit noisy
  • No smart features

Click here to see its current price 

4) Coway Airmega 400 Smart Air Purifier

Coway Airmega 400 Smart Air Purifier

Have you been looking for an air purifier for your large living space? Look no further; the Coway Airmega 400 is a real deal. With coverage of 1560 square meters, you can breathe easy knowing your house has fresh air and free of allergens.

This product comes with a dual suction that draws the polluted air from the sides and pushes the fresh filtered air from the top unit. Its max 2 filter made of True HEPA filter and activated carbon traps reduces up to 99% of particles that cause allergies. Also, it has a pre-filter that helps the max 2 filter work well by capturing large particles such as hair and fur.

In addition, the Air Mega 400 has a smart mode feature that helps it to automatically adapt to its surroundings. ‘How?’ You ask. It adjusts the fan speeds based on the quality of air in your room. Also, it has a filter indicator that informs you when the filters need hot be replaced.

There is no doubt that the Airmega 400 is a balance of design and technology worth your every penny.


  • Smart technology
  • Quality performance
  • Magnificent air filtration
  • Extensive coverage


  • Expensive filter replacement

Click here to see its current price 

5)IQAir Medical-Grade Air

IQAir Medical-Grade Air

Living with allergies and asthma is, no doubt, a burden. You can ease it with one of the pros in the market (pun intended): IQAir health pro plus purifier.

This product has a high-quality hyper HEPA filter that reduces over 99.5% particles down to the smallest ones that exist (0.03microns). It also comes with a V-5 cell gas and odor filter that neutralizes a wide range of household odors. Still, it has a triple- seal technology to make sure no air escapes unfiltered.

Like most purifiers, IQAir has sophisticated control features. You can program it to clean the air according to your need. Also, it has LED lights that alert you when you need to change the filter.

Still, on technology, this purifier is designed to operate quietly with an even flow diffuser that distributes fresh air in all directions.

With a high CADR rating of 300 cfm, the IQAir Healthpro is a perfect purifier fit for an 1125 square feet room.


  • Remarkable performance rating
  • Impressive fan power and technology
  • Quiet operation
  • High CADR rating


  • A bit pricey

Click here to see its current price 

6) Alen Breathesmart Classic Air Purifier

Alen Breathesmart Classic Air Purifier

There is nothing harder than using medication for the rest of your life due to allergies and asthma. The good news is, you make life more comfortable with the best air purifier.

Meet your new best friend: Alen Breathesmart.

This purifier is designed for large spaces with a coverage of up to 1,100 square feet. Built with multiple HEPA layers, It eliminates dirt, germs, fumes, and other household odors, making it perfect for asthmatic people. Still, it has a whisper-quiet operation, which makes it suitable even for your bedroom.

Interestingly, this product comes with a smart sensor technology that detects and indicates your room’s air quality. It also operates in auto mode. On auto mode, the fan adjusts its speed according to the level of pollutants in your home.

Thanks to the inbuilt filter indicator, you don’t have to guess when to change the filters. Alen breath smart has a LED light that reminds you when to change.

In addition, this purifier has four fan speeds and a timer that can be set to your desirable hours of operation.

And here is the deal clincher, the manufacturers are confident about the quality that they offer a lifetime warranty.


  • The large coverage area of up to 1100 sq. feet
  • Filter change indicator
  • Customized design
  • Lifetime warranty


  • High sound levels
  • Not efficient for neutralizing odors

Click here to see its current price 

7) Blueair Classic 605 Air Purifier

Blueair Classic 605 Air Purifier

Fight allergies and asthma with Blueair classic 605 air filter. It delivers a true HEPA performance by trapping over 99.97% airborne germs and pollutants, including dust, pollen, and other allergens.

In addition, this purifier has an impressive 500 cubic feet per meter of Clean Air Delivery Rate (CADR), and up to 5 times air changes per hour, you are sure of fresh air. Such capacity is enough for the purifier to clean large rooms of up to 800square feet.

You have complete control of your needs with Blueair 605. Simply connect to Wi-Fi and use the blue air friend app to keep track of the air quality of your room and regulate the fan speed appropriately.

Still, you can use the Alexa voice control to operate. You can select from the three available fan speeds. Alternatively, you can set the machine into auto mode, and it will regulate itself.

Moreover, you do not have to use your intuition to change the filters; a filter change indicator will give you a signal. Also, as the name suggests, this purifier operates silently thanks to the HEPA silent technology.

The only downside of this product is that it is not effective in reducing odor. However, you can buy dual protection filters sold separately. They provide extra carbon filtration to neutralize household odor and smoke. You can recycle the filters and replace them after 6months.


  • Great performance rating
  • High area coverage
  • Quiet operation
  • Voice control
  • Quality material


  • No smart sensor
  • bulky

Click here to see its current price 

8) LEVOIT Air Purifier LV- H134 for Allergies and Asthma

LEVOIT Air Purifier LV- H134 for Allergies and Asthma

Are you a pet lover but can’t get one because you are allergic to fur? What if I told you can finally get one? With the Levoit LV-H134 air purifier, you can own a pet without sneezing yourself silly all day.

This product is ideal for you as it has 3 stage purification filters. Here is how it works. The preliminary filter captures hair, fur, and other large particles. The True HEPA filter traps up to 99.9% air particles up to the tiniest as 0.3 microns. On the other hand, the activated carbon filter absorbs odors from pets, smoke, and other household odors.

In addition, the purifier has a smart auto mode that detects pollutants in the air and automatically adjusts the fan speed to purify the air.

Its powerful 360 degrees suction is also a plus. The LV-H134 fetches contaminated air from all sides and releases the purified air from the top of the machine. The quick and efficient process ensures your air is clean and free from allergens.

The other impressive feature is the fan power. The LV-H134 has a high rating of CADR of 312cfm. With this capacity, it purifies an 1170 square foot room in 30minutes and a smaller room of about 710square feet in 18 minutes.


  • impressive smart features
  • mobile
  • good CADR rating
  • solid performance


  • a bit noisy
  • Click here for the product price

Click here to see its current price 

9) Germ Guardian AC4300BPTCA True HEPA Filter Air Purifier 

Germ Guardian AC4300BPTCA True HEPA Filter Air Purifier

Like the saying goes: any sufficiently advanced technology is indistinguishable from magic. Well, some of the features in this machine will sound like magic to you. How about an air purifier that purifies the air and kills germs?

The Germ Guardian is one of those air purifiers. This product introduces the impressive UV light filter that kills airborne viruses such as influenza, rhinovirus, and staph. Unbelievable right?

It also comes with a 3-in-1 purifier with a HEPA media air filter that eliminates up to 99.97% particles and allergens. Also, it has a pet pure filter with anti-microbial agents to stop the increase of mold and bacteria that cause odor on the filter surface. It also has an activated charcoal filter that neutralizes household odors such as smoke and pet odor

This purifier has a medium fan power with 107 dust/99smoke and 116 pollen. This capacity is suitable for small and medium rooms.

The Germiguardian purifies air four times every hour in rooms of up to 153 square feet. You can regulate the speed to your comfort with the three-speed setting. The lowest speed is an ultra-quiet mode. You will not only breathe fresh air but also sleep soundly.


  • Quality for money
  • Portable
  • Kills airborne viruses
  • Reduces odor


  • Low coverage area

Click here to see its current price 

10) Fellowes 9286201 AeraMax 290

Fellowes 9286201 AeraMax 290

It easy to feel like you are fighting a losing battle when you have a mold allergy. Molds can be found in so many places indoors. It can thrive in the damp bathroom, refrigerator drips, or garbage pails. If you are looking for a lasting solution for mold, then you are in the right place.

With a four-stage filtration process, the Fellowes Aeramax is your best choice to eliminate mold. This purifier comes with an antimicrobial treatment as an addition to the usual HEPA filter, carbon filter, and ionizer. Antimicrobial treatment reduces the growth of fungi and other substances on the HEPA filter. This neutralizes odors and makes the air clean.

What’s more?

This air purifier comes with a filter change indicator that alerts you when the filter needs a change. Also, it has a smart feature that automatically detects the quality of air. When the air is contaminated, the purifier automatically purifies it.

The multispeed fan is also a plus. You can customize the fan speed according to your needs.

The Aeramax 290 is designed for medium to large rooms. It covers rooms of between 300-500 square feet. Also, it has an ultra-quiet operation.

Did I mention it is certified by the Asthma and allergy foundation of America? Well. It is.

What better way to fight mold and get value for your money than on Fellowes AeraMax.


  • Fan indicator
  • Multispeed fun
  • Medium to large coverage


  • No smart features 

Click here to see its current price 

Bottom Line

Shopping for an air purifier, like any other product can be a pain in the neck. Especially when you are looking for the best one there is. You need to be sure you are getting a product that will give you value for your money.

That is where we come in. We understand it might not only be tedious but frustrating considering all the brands out there. We cannot rule out the possibility of being duped by a salesperson who is chasing a discount.

Thorough research online and a scan through customer reviews. We settled on these 10  best air purifiers for asthma and allergies. It’s our hope the above review will help settle on the best air purifier according to your needs.




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