Definition
High-Efficiency Particulate Air filter — captures 99.97% of particles down to 0.3 microns, including most allergens and fine dust.
Why this matters for your home
A true HEPA filter captures 99.97% of particles down to 0.3 microns — fine dust, pollen, mold spores, and pet dander. The media is so dense that residential HEPA usually lives in a dedicated bypass unit rather than the main filter slot, so it cleans air without choking system airflow.
For households with allergies, asthma, or sensitivity to winter dust, HEPA-level filtration makes a noticeable difference, especially in tightly sealed homes that recirculate the same air for months. We size and place filtration so you get cleaner air without starving the blower of the airflow it needs.