January 05, 2023

HEPA Filters Explained — How Do HEPA Filters Work?

HEPA air filters and devices that use them have become a hot commodity since 2020, but HEPA filters have been around since the early 1950s.

HEPA filters are used in a variety of highly sensitive applications, such as preventing airborne contamination in hospitals and healthcare facilities and protecting equipment from particulate matter in cleanroom facilities. HEPA filters are also being used in offices, classrooms, and homes to improve air quality by removing particulate pollutants, pollen, pet dander, and other airborne contaminants, as well as to lessen the spread of COVID-19.

What Is a HEPA Filter?

As explained by the EPA (Environmental Protection Agency),

“HEPA is a type of pleated mechanical air filter. It is an acronym for ‘high-efficiency particulate air [filter]’ (as officially defined by the U.S. Dept. of Energy). 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).”

“I would object a little bit with this definition,” says Mark Davidson, Manager of Marketing and Technical Materials for Camfil, USA. “There’s nothing theoretical about it. A HEPA filter is one that has been individually tested according to one of the tmajor global test standards.Many so-called HEPA air filters on the market may not actually provide this level of protection or anything close to it because there is no evidence the filter achieves HEPA-level performance. As a result, many air...

Read Full Story: https://cleanair.camfil.us/2022/12/30/hepa-filters-explained-how-do-hepa-filters-work/

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