Glossary
HEPA Filter — Glossary
High-efficiency particulate filter — captures 99.97% of fine particles including dander.
HEPA (High-Efficiency Particulate Air) filters capture at least 99.97% of particles at 0.3 microns — the size class covering pet dander, fine dust, and most allergens.
For pet homes a HEPA purifier pulls the airborne dander load — the particles carrying both allergen and ambient odor — out of circulation.