Safe & Certified: 100% ozone free, Renpho air purifiers never use UVC Light and Anion. Intertek Etl/FCC Certified/CARB(california Air Resources Board) Ca Prop 65 Certified for Sale in California. High-efficiency air purifier for home large room: This HEPA air purifier can clean large spaces up to 1,440 sq ft in one hour, 720 sq ft in 30 minutes, CADR 176 CFM 300m³/h. Ideal for living rooms, bedrooms, kitchens, bathrooms, basement, dorms, offices, and classrooms. H13 True HEPA filter & Advanced 4-stage filtration system: Medical grade H13 Filters effectively removes 99.97% of fine particles as small as 0. 3 microns and large pollutants such as odor, dust, pet dander, smoke. The 360° sleek tower design uses advanced 4-stage filtration with a long-life HEPA filter. The asthmatic, pet allergic, dust mites allergic, coughing, sinusitis, sneezing, chronic allergies, and seasonal allergy are greatly relieved when using the RENPHO air purifier for the bedroom 4 Fan speeds and quiet sleep mode: High CADR air purifier chooses a speed from low, medium, or high and turbo. Operates quietly at 26dB during sleep mode, all display lights will be turned off at sleep mode, sleep quality will be improved with Renpho Air Purifier for home bedroom Energy-saving Auto Mode with AQ indicator lights: The detect sensor of the air purifier for the bedroom is imported from South Korea, accurately indicates air quality by changing the led light color, while auto mode automatically adjusts the speed from 1 to 4 4 Timer/Filter indicator/Child lock: The timer setting will automatically shut off after 2, 4, or 8 hours. The filter indicator will remind you to change the filter every 6 months(Search "RP-AP089-f1'' for replacement filter). A lock is efficient to avoid error operations