3 energy efficient settings, plus an ionizer function that can be turned on or off as desired HEPA-type filter is 99% effective at capturing airborne particles, such as dust, pollen, tobacco smoke, cat dander and mold spores, as small as 2 microns Washable pre-filter captures large particles and extends the life of the HEPA filter Filter is treated with an antimicrobial barrier The permanent HEPA filters can simply be vacuumed, which means you never need to buy new filters A powerful fan provides maximum air cleaning efficiency Circulates the air in your room up to 5 times an hour Electronic push button controls with 3 speeds Optional on/off ionizer and oscillation Electronic Filter Clean Indicator reminds you when you need to clean the filters Filtration Type: HEPA-type Area Covered: 13' x 13' (169 sq. ft.) Speeds: 3 Power: - Air Flow: - Noise Level: - CADR: 110 (Smoke) Dimensions and Weight: Size: 9.75''W x 10.5''D x 27''H Weight: 10 lbs. Warranty: 5 year limited warranty Shipping Weight: 13.00 lbs. Please note: This appliance complies with the U.S. Electrical Standard.