HEPA Air Filter

Definition

An acronym for high-efficiency particulate arrestance air filter, a mechanical filter that filters air by forcing it through a fine mesh, which traps pollutants such as dust mites, mold, pollen, etc.

Things you need to know

For a filter to be a HEPA filter, it must remove 99.97% of particles over 0.3 µm from the air that passes through it.

Cost Considerations

HEPA air filters are the best at removing airborne particles, but they may restrict the airflow to the HVAC system too much or be too large to fit the space intended for them. Fixing this problem will probably require a retrofit done by a heating and cooling professional. A HEPA air filter for an electric-fired boiler system costs $100 to $300.

Costs vary greatly by region (and even by zip code). To get free estimates from local contractors, please indicate yours.