The Only Clinically Proven Medical Grade Air Purifier! The HEPA Filter used in the Austin Air Healthmate Plus® effectively removes up to 95% of bacteria and aerosolized viruses* larger than 0.1 microns. It also eliminates a wide range of gases, chemicals, VOC’s and formaldehyde. This broad-spectrum adsorption makes it the best choice for people exposed to smoke from wildfires and offers dentists and their patients protection against airborne contaminants. This unit is built with industrial strength capabilities and I run mine 24/7 in the house unless I am away on vacation. During my testing of air purifiers I had people come into my room with the purifier. Many of them commented on how energized they felt and how good the air smelled with The Healthmate Plus. All I can say is that I love finding the best products for myself and to share with our community to have a Chemical Free Life!