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Do air purifiers help allergies?

Allergies can be triggered by many sources including, seasonal pollens, indoor ventilation, and environmental conditions in your home, like the presence of pet dander and dust mite matter allergen. With a wide rang of airborne allergens, allergy symptoms can appear in varying degrees year round, however using an air purifier to filter out airborne allergens is one way to help manage allergen exposure indoors.

Air purifiers for allergies

Designed for the specific purpose of improving indoor air quality, air purifiers remove airborne particles, including those that can trigger allergies like pollen, pet dander, dust mite matter allergen and mold.

Generally, how it works it simple – the air purifier’s fan pulls in polluted air, then pushes the air through a filter or layer of filters to capture the particles before releasing clean air back into the room.

How to choose an air purifier for allergies

According to the EPA, the most effective way to improve your indoor air are to reduce or remove the sources of pollutants and using portable air cleaners and ventilate with fresh outdoor air to improve indoor air quality.¹ When choosing an air purifier evaluate the filter type, independent performance certifications, and room size.

Filter type

Allergens like dust mite matter allergen, pollen, mold, and pet dander fall under the ‘particle’ category of airborne pollutants. Selecting an air purifier with particle filter media, or combination particle and carbon ensures the filter can do its job.

Only Blueair air purifiers use HEPASilent(TM) technology. When it comes to filtration, two technologies ensure the removal of at least 99.97% of airborne particles down to 0.1 microns² so even the tiniest particles, such as viruses and bacteria, are captured, while larger particles such as dust, pollen and smoke are also removed.

Independence performance certification

Independent evaluations of product performance can help you feel confident that your product will do what it says it will. For air purifiers, consumers can look to the Association of Home Appliance Manufacturer’s AHAM Verified® label and Clean Air Delivery Rate (CADR) to evaluate performance.

CADR indicates the air purifier's ability to reduce airborne particles at three common sizes, each represented by an air pollutant of that size: smoke, dust, and pollen. Look at air purifiers with a high Clean Air Delivery Rate (CADR) - the higher the CADR number, the more effective the air purifier is at removing those pollutants.

Room size

All AHAM Verified® air purifiers are given a recommended room size. It is important to choose an air purifier that can accommodate the volume of air in the room where you will place it. This ensures there is enough airflow (measured in air changes per hour or ACH) to reduce allergen levels consistently and over a long period of time. We recommend placing your air purifier in the room(s) where you spend most of your time – often the bedroom. Bedrooms can also have high levels of allergens like pollen, pet dander, and dust mite matter allergens.

When evaluating an air purifier for allergies, you may also want to consider selecting a model rated for a larger room size. The larger room size increases the number of air changes per hour (ACH), or the number of times all the air in the room gets filtered through the air purifier.

All Blueair air purifiers remove airborne allergens like pollen, dust mite matter allergens, pet dander, and mold³.
Keep allergens at bay with award-winning air purification...

¹ EPA, Environmental Protection Agency,

² Based on removal testing of PM 2.5 (0.1 - 2.5 microns) and germs (H1N1, E.coli) up to 90min in a 30m3 room. Performance may vary. Not all Blueair air purifiers have been tested against SARS-CoV-2 and Blueair does not claim to kill/prevent transmission of COVID-19.

³ Tested on A.niger with minimum reduction rate of 99.9% in 60min