OION LB-8001 5-in-1 Air Cleaning System with True HEPA, UV-C, Ionizer, PCO Filtration, and Odor Reduction Air Purifier Washable True HEPA Filtration - Save Money and the Environment - True HEPA filtration includes a washable HEPA filter to remove micro-pollutants as small as .3 microns in size. High Intensity UV-C Technology - Broad Spectrum UV-C used to sterilize air as it passes through the air purifier to kill harmful bacteria and viruses. Electrostatic RF Ionizer Purification - Negative ions (O1) charge and help to remove airborne pollutants such as allergens, pollen, mold, smoke, pet dander, unpleasant odors, dust, and other airborne irritants. Photo-Catalytic Oxidation (PCO) Filter and Ozone Power (O3) less than 0.05 ppm - Kills Bacteria and Reduces odors while absorbing volatile airborne pollutants. Ozone function can be turned on or off. Whisper Quiet 5 Speed Fan and Remote Control and Maintenance Reminders - 5 airflow speeds at the control of your finger tips silently cleans and sanitizes the air around you. Customizable settings for rooms sizes from 250 to 3500 sq ft.