HEPA (High-Efficiency Particulate Air) vacuums differ from conventional vacuums in that they contain filters that are capable of trapping extremely small, micron-sized particles. A true HEPA filter can trap 99.97 percent of all airborne particles larger than 0.3 microns.
The right vacuum can do wonders for your allergies, asthma or COPD. The wrong one can wreak havoc. We tested HEPA–filtration models to come up with.
Vacuum cleaners equipped with high-efficiency particulate air (HEPA) filtration (