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In general, we measure an air filter’s efficiency by its ability to capture particles from the air. But, to qualify as HEPA certified, air filters must first conform to the U.S. Department of Energy’s (DOE) standards. defines HEPA filter as a throwaway, dry type filter in a rigid casing or enclosure. The device must exhibit an efficiency of at least 99.97% when tested with an aerosol of 0.3-micrometer diameter.

Many brands nowadays are using the word “HEPA” and “true HEPA” in the packaging of their products. Because of this, many homeowners end up believing that all types of air…


At morConnect, we’ve installed more than 35,000 air conditioners, whole-home air and water systems, and furnaces across Canada. Learn more at

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