Why would you use a HEPA air purifier?
High efficiency particulate air [filter] is the name of the acronym (as officially defined by the U.S. Dept. of Energy). Theoretically, this kind of air filter can eliminate 99.97 percent or more of dust, pollen, mold, germs, and any other airborne particles smaller than 0.3 microns (m). Do air purifiers actually eliminate dust? Yes, most air purifiers on the market are made to filter out big dust particles, to provide the quick response. A common technique for catching pollutants on filters is mechanical filtration. Where should I install an air purifier? The optimal location for an air purifier is close to where you breathe. The distance that clean air must travel before it reaches you is less the closer the device is to your head. This often means placing the air purifier close to the bed on a nightstand or small table in the bedroom.