Replacement Air Filters

HEPA is an acronym that stands for "High-Efficiency Particulate Air" filter and is a particle capture efficiency standard used to describe filters that can trap at least 99.97 percent of particles that are 0.3 microns, according to the U.S. Department of Energy.

A HEPA filter, as defined by the U.S. Department of Energy standard, must remove at least 99.97% of 0.3-micron particles from the air that passes through it. The particle size of 0.3 microns is used because it is the most penetrating particle size, or MPPS, and therefore the most difficult to capture. For reference, 0.3 microns is 0.3 micrometers, or 0.3 millionth of a meter, and include contaminants like dust, smoke, pollen, spores, and some bacteria, viruses, and fungi.

A filter is either HEPA or not HEPA. Some filters may say "HEPA-type," "HEPA-like," or "HEPA-style,", however, these filters do not meet the standard defined above and therefore allow a lot more of the smaller particles to pass through the filter and into your living space.

Yes. There are two grades of HEPA filters; H13 and H14.

1. H13 HEPA Filters – Captures >99.97% according to ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) and >99.95% according to ISO (International Organization for Standardization) of 0.3-micron particles.
2. H14 HEPA Filters - Captures >99.99% according to ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) and >99.995% according to ISO (International Organization for Standardization) of 0.3-micron particles.

HEPA filters capture ultrafine contaminants from being circulated through the air you breathe, giving you relief from allergies and other irritants.