An acronym for 'High Efficiency Particulate Air'. HEPA filters originated in the 1940's, and were introduced to the commercial markets a few years later under a registered trademark.
A true HEPA® is the best known filter for removing at least 99.97% of particulates such as dust, animal dander, smoke, mold and other allergens that are 0.3 microns or larger, from the air and thus improving air quality.
There are many generic HEPA filtration filters on the market today, but a true HEPA® filter will proudly display its efficiency ratings on the packaging. Other similar filters may not meet the same efficiency standards.
Manufacturer's recommendations of when to change these filters, should be followed, to ensure the best operational performance of your appliance. This being said, if your home has more than the usual amount of dust, pet dander and other allergens, the HEPA filter may require changing more often than recommended.
HEPA® filters are expensive to replace, but the benefits far outweigh the costs.
HEPA® filters are found on many appliances, such as air cleaners and purifiers, and vacuum cleaners. These filters have become invaluable for removing allergens from the air in a room, and bringing relief to persons with allergies or asthma.
