Seasonal allergies are commonly triggered by allergens such as pollen, mold spores, dust mites, and sometimes pet dander. Air purifiers use various filtration technologies to reduce these allergens from the indoor air.

HEPA filters are among the most effective tools for reducing airborne allergens. They filter 99.9% of particles as small as 0.1 microns, including dust mite debris, pet dander, pollen, and mold spores.

A recent SleepScore Labs study tested the PuroAir purifier and confirmed its effectiveness in improving indoor air quality and reducing allergens, making it a reliable solution for allergy sufferers.²

Studies have shown significant reductions in allergen levels when HEPA filtration is used regularly. (National Library of Medicine)

HEPA Filtration: The most important technology in an air purifier for allergy sufferers is the HEPA filter. HEPA filters are designed to filter out 99.9%* of particles as small as 0.1 microns. This includes most common allergy triggers like pollen, dust, and smoke. Since pollen particles typically range from 10 to 100 microns, they can easily be filtered out by HEPA filters.

• Pollen: HEPA filters can help trap pollen from trees, grasses, and weeds, which are common culprits during allergy season.
• Dust: Dust mites, which thrive in warm, humid conditions, and dust particles that accumulate in the air during spring or fall, are effectively removed by HEPA filtration.

CarbonTech™ Filter: In addition to HEPA filters, PuroAir air purifiers have activated carbon filters that can absorb odors, and some gases. While not primarily designed for allergen removal, activated carbon can help reduce odors associated with pollen, or damp conditions, which may worsen allergies.

Seasonal allergens are often carried into the home on clothes, pets, and through open windows. An air purifier can help reduce the buildup of allergens in your home environment by continuously filtering the air.

Air Circulation: The fan in the air purifier circulates the air in the room, ensuring that allergens are drawn into the filter and cleaned from the air. Most air purifiers have multiple fan speeds that adjust to the level of pollution or allergens detected, ensuring efficient filtration. PuroAir air purifiers also have an auto setting meant to increase fan speed automatically when it senses an increase in particles in the air.

24/7 Air Filtration: Air purifiers work continuously to support clean air by helping filter out allergens even when you’re not aware of them. In allergy season, when pollen levels are high, keeping an air purifier running can help clean the air and filter out the amount of allergens that settle on surfaces like furniture, bedding, and floors.

Indoor vs. Seasonal Allergens:
Indoor allergens like dust mites, pet dander, mold spores, and cockroach allergens are common triggers. Unlike outdoor allergens—such as tree or grass pollen, which are seasonal—indoor allergens are present all year. They build up on surfaces and in household dust, especially in fabrics and carpets.

What makes indoor allergens tricky is how persistent they are. Dust mites, for instance, thrive in humid environments, while pet dander can stay in the air long after you’ve cleaned. Pollen, on the other hand, typically enters from outside and doesn’t linger indoors in the same way.

The good news is that air filtration can help. Using a HEPA filter can trap most airborne allergens, making a noticeable difference in indoor air quality (Salo et al., 2016).

By filtering out allergens, air purifiers also help keep your indoor environment cleaner. This is particularly helpful for those with seasonal allergies, as allergens often settle on surfaces where they can be stirred up again later.

Helping Reduce Exposure to Common Irritants: By filtering out allergens from the air, air purifiers may help reduce symptoms such as sneezing, itchy eyes, nasal congestion, and coughing asthma attacks that are often triggered by exposure to pollen or other allergens.

Cleaner Air in Specific Areas: Air purifiers can be placed in key areas such as the bedroom, living room, or home office, providing relief where it’s most needed. Many air purifiers are designed to cover specific room sizes, so choosing the right model for your space will maximize its effectiveness.

During allergy season, outdoor allergens like pollen can be carried inside, and allergens from one room can spread to others. Air purifiers may help limit cross-contamination by ensuring that the air in each room is filtered efficiently and allergens don’t spread as easily.

Seasonal allergens aren’t the only potential irritants in the air. Indoor air quality (IAQ) is a significant factor in allergic reactions, and poor IAQ can exacerbate allergy symptoms. Air purifiers improve IAQ by reducing dust, pet dander, smoke, and other pollutants, creating a more comfortable environment for those with allergies.