What is HEPA?

HEPA air purifier is one of the most popular and effective technologies for cleaning air available today.

HEPA air purifiers are those that cause air to pass through a specially-designed filter called HEPA, which stands for High Efficiency Particulate Air.  These HEPA air purifiers are designed to remove 99.97% of all pollutants that are 0.3 microns or larger.  For reference, 1 micron is 1/100th the width of a human hair!

HEPA filtration technology was developed by the US Atomic Energy Commission to filter our radioactive "dust" and materials from the air.  They have been proven to be very effective at removing dust, pollen, mold, dust mites, bacteria, and other allergens.  Another benefit to HEPA air purifiers is that once the particles are "captured", they are not released again back into the air.

HEPA air filters look like most other air filters you've seen, many have a pleated media, separators, wet laid filter medium, edge seal, a sealant and are contained in a rigid frame. By their nature, HEPA air purifiers do not lose their efficiency over time although they do have the potential of becoming clogged and blocking airflow.