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How do HEPA filters work?

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HEPA stands for high-efficiency particulate air. A HEPA filter is a type of mechanical air filter; it works by forcing air through a fine mesh that traps harmful particles such as pollen, pet dander, dust mites, and tobacco smoke.

From: HEPA Filters for Allergies WebMD Medical Reference

SOURCES:

Allergy and Asthma Foundation of America: "Air Filters."

Ohio State University College of Medicine Department of Internal Medicine, Division of Pulmonary, Allergy, Critical Care & Sleep Medicine "HEPA Filters Help Some with Allergies." :

Reviewed by Nayana Ambardekar on January 20, 2019

SOURCES:

Allergy and Asthma Foundation of America: "Air Filters."

Ohio State University College of Medicine Department of Internal Medicine, Division of Pulmonary, Allergy, Critical Care & Sleep Medicine "HEPA Filters Help Some with Allergies." :

Reviewed by Nayana Ambardekar on January 20, 2019

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