Hepa High Efficiency Particulate Air Filtration Filter Fans

Filtration in building heating ventilation and air conditioning hvac systems can play a role in a school s overall risk mitigation approach but is not generally regarded as a solution by itself.

Hepa high efficiency particulate air filtration filter fans.

Hepa is a type of pleated mechanical air filter. Hepa filters capture variously sized particles within a multi layered netting usually made out of very fine fiberglass threads much thinner. Hepa is an acronym for high efficiency particulate air. Filters meeting the hepa standard must satisfy certain levels of efficiency.

This type of air filter can theoretically remove at least 99 97 of dust pollen mold bacteria and any airborne particles with a size of 0 3 microns µm. Hepa stands for high efficiency particulate air. Hepa stands for high efficiency particulate air hepa filters are physical filters designed to clear out at least 99 7 percent of particulates that are 0 3 microns or larger in size. Likewise portable high efficiency particulate air hepa air purifiers are only likely to be effective alongside other measures.

It is an acronym for high efficiency particulate air filter as officially defined by the u s. Common standards require that a hepa air filter must remove from the air that passes through at least 99 95 european standard or 99 97. In this article we show how a hepa filter works. This means airborne particles like pollen dust mold spores and pet dander.

Hepa is short for high efficiency particulate air. The airmega 400 is rated to clean up to 1 560 square feet and cycles all the air in that space twice per hour but in a room half as big its high efficiency particulate air hepa filters cycle. This means hepa filtration therefore uses high efficiency filters to clean the air of particulate matter. This nasa study of hepa filtration is quite technical but the graph on page 7 and the preceding paragraph do a good job of explaining why hepa filters are actually most efficient almost 100 at.

It works by forcing air through a fine mesh that traps harmful particles such as pollen pet. The h13 hepa filter is a medical grade air filter capable of removing a minimum of 99 95 particles at mpps 0 21 microns.