Get Healthier Indoor Air with a HEPA
January 7, 2013
HEPA is an acronym for “high efficiency particulate air.” Used in vacuums and air purifiers, HEPA filters trap a large amount of very small particles that other vacuums would simply redistribute back into the air of your home, reducing your exposure to allergens and indoor air pollutants. HEPA filters are especially important for children’s developing lungs, allergy sufferers, asthmatics, and others with health problems. Reducing or eliminating those particles will make cleaner air for everyone in your home.
Here are the different categories of HEPA filters:
1. Sealed HEPA refers to a vacuum that is sealed so that all the air being drawn in goes through the HEPA filter. Though, sometimes the term refers to just the filter itself being sealed at the filter mount.
2. Near-HEPA or HEPA Type filters are filtration systems that filter near, but do not meet the level of particle capture required for HEPA filtration. They often capture only 85 to 90 percent of particles (or less for particles of 1 micron and below). In some cases, the tradeoff is worth it, since they cost much less than true HEPA filters.
3. ULPA (ultra-high efficiency particulate air) refers to a filter that will remove “not less than 99.999% of 0.12 micron diameter particles or larger from the air that passes through it.”
4. Multi-Stage filtration uses multiple layers of filter material to remove larger particles. It can be used alone or as a pre-filter for other filtration systems.