Removes airborne pollutants at the molecular level, instantly neutralizing viruses and germs in the air. True HEPA filter captures 99.97% of particles and impurities as small as 0.3 microns, including mold spores, pollen, dust mites, allergens, bacteria, cigarette smoke, pet dander and odors. Air purity sensor monitors the air quality and automatically adjusts the fan speed to keep your air purified. Ultra quiet operation. Filter change indicators. True HEPA and carbon filters included with air purifier. Air Cleaner Machine Type: HEPA; CADR: 150 (smoke, 151 (dust), 156 (pollen); Maximum Room Size (Square Footage): 230.