Harvard Health Letter

Do you need a portable air purifier?

Portable air purifiers can eliminate or reduce several airborne allergens and pollutants such as dust mite allergens, mold, pollens, and pet dander. There are hundreds of styles and manufacturers of portable air purifiers, which range in price from $30 to $1000. But the big difference is in the filters. Doctors recommend high-efficiency particulate air (HEPA) filters, which are able to capture ultra-fine particles in the air. These filters must be replaced annually. It’s best to run an air purifier all day long in an area where one is exposed to air pollutants.
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