The Model 5000 whole-house air purifier uses a combination of electrostatic technology and traditional air ?lter to capture 99% of airborne viruses that flow through the system. Tried, true, and tested, the Model 5000 whole-house air purifier is installed into your central heating and cooling system by a local HVAC professional. Eliminates 98% of airborne bacteria and fungi. Removes 98% of pet dander and respirable dust, which can trigger asthma. Captures 95% of airborne particles the size of tobacco smoke and smog. Removal of 99% of airborne viruses and ultra-fine particles, down to 0.3 microns in size. Traps 99% of airborne pollen, mold, and spore-sized particles less than a micron in size (up to 120 times smaller than a human hair).