HEPA is a type of pleated mechanical air filter that is common in portable air cleaners, also known as air purifiers. It is an acronym for "high efficiency particulate air" filter, as officially defined by the U.S. Department of Energy.
If you suffer from asthma or another breathing difficulty, you may find a HEPA (sometimes defined as "high-efficiency particulate air," sometimes as "high-energy particulate arresting") air purifier (or a vacuum with a HEPA filter) well worth the investment. Let's take a look at how they work.
HEPA filters are advanced air filtration devices engineered to capture extremely fine particles, down to one micron (µ), or one-millionth of a meter. These filters are vital components of air purifiers as they meet stringent standards for removing pollutants.
The Conversation on MSN: HEPA air purifiers may boost brain power in adults over 40 – new research
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