Faq
I keep hearing the term 'True HEPA.' Are there different forms of HEPA?
There are quite a few terms marketers use to describe air filters. While True HEPA is technically a marketing term, it’s used by many to differentiate between American and European HEPA standards.
In Europe, a filter only needs to capture 85 percent of particles sized at 0.3 microns—compared to the 99.97-percent U.S. standard—to be HEPA-certified. The American standard is, thus, often referred to as “True HEPA.” “HEPA-type,” “Ultra HEPA,” and other HEPA variations aren’t recognized by the accrediting bodies in the U.S. or Europe.
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