True HEPA filter captures 99.97% of airborne dust mites, pollen, pet dander, mold, bacteria and smoke Fights Germs: UV-C light helps reduce airborne bacteria, viruses, mold spores* and works with Titanium Dioxide to reduce volatile organic compounds. *Tested with Staphylococcus Albus, and Escherichia Coli, Aspergillus Niger and Phi-X174 Activated charcoal filter reduces airborne odours for fresher, better-smelling air HEPA air filtration systems help reduce exposure to indoor asthma triggers 153 sq. ft. coverage area is perfect for both small and large rooms by circulating air over 4 times per hour Clean Air Delivery Rate (CADR): Tobacco Smoke 99, dust 118, and pollen 125 Ultra-quiet operation and digital controls for simple, low-noise use Energy Star rated to help with energy efficiency