About this item Unrivaled Performance: The HealthPro Plus is the #1 Rated room air purifier for homes, offices, schools, hospitals, industrial, and commercial sites. Has received more top reviews and awards than any other air purifier. Chosen by the Hong Kong Hospital Authority for both SARS-CoV-1 & SARS-CoV-2, the virus that causes COVID-19. Superior airflow with the 320-degree EvenFlow Diffuser efficiently filters all the air in large rooms and bedrooms numerous times an hour. Medical Grade H14 HyperHEPA Filter: Proven and certified by a third-party testing lab to remove and trap 99.995% of all airborne particles down to 0.003 microns, the HealthPro Plus supplies unequaled protection against bacteria, dust, mold, pollen, pet dander, smoke from wildfires, odors, harmful chemicals like formaldehyde, and more. True HEPA filtration. Long Lasting & Cost-Efficient Filters: Three different filters clean the air four different ways. Pre-filter traps coarse particles. Activated carbon adsorption and pelletized chemisorption filter odors and gasses. HyperHEPA traps fine and ultrafine particles. Long-lasting filters – 16 to18 months for the pre-filter, 2 years for the gas and odor filter, 3 years, 9 months to 4 years, 2 months for the HyperHEPA filter - helps save money over the air cleaner’s lifetime, and more eco-friendly. Energy Saving and Ultra-quiet Air Cleaner: The HealthPro Plus emits ultra-quiet, low-decibel sound across all four fan speeds. The fan-in-center design places the motor between sound-reducing filters. Doubled-walled housing limits sound. Rubber suspension pads isolate motor vibration from the air cleaner housing. EvenFlow Diffuser deflects sound back into the system. Powerful fan uses only as much electricity as a conventional light bulb, amounting to pennies per day to operate. Certified Performance: Each HealthPro Plus air purifier is made in Switzerland and individually tested for total system efficiency. If the system is not delivering 99.97% cleaner air or better, it does not get shipped. The results of the tests are detailed in a hand-signed Certificate of Performance. Every system comes with a 10-year limited warranty. Direct purchases from the manufacturer will require a signature to acknowledge receipt upon delivery. CARB EO # G-10-059.