HEPA stands for “high-efficiency particulate air” and is a technology, originally developed by the nuclear industry to clean up dangerous, radioactive particles, that also very effectively filters out and traps household particles in the air through the use of dense interlaced fibers.

In fact, unlike traditional high efficiency filters, which remove only about 95% of pollutants down to 1 micron in size, HEPA filters are so effective, they remove about 99.97% of particles down to 0.3 microns from the air.

How small are the particles HEPA filters capture? Really small! To give you some perspective, while a human hair is about 50 to 150 microns in diameter, HEPA technology can trap 99.97% particles that are about 0.3 microns in diameter or larger, hundreds of times smaller.

So, how big are the particles HEPA filters trap?

  • Mold Spores: 3-12 microns
  • Bacteria: 0.3-60 microns

Make sure when buying HEPA filters to avoid products with terms like “HEPA-like” or “HEPA-type”. A genuine HEPA filter will indicate that it filters at least 99.97% of particles at 0.3 microns.

We’re taking every precaution to keep you and our team members safe during each home visit. For help you can trust, Call on Reliance™.