Quick Circulation Rate: With CADR 142 CFM / 241 m³/h, Aurora air purifier can purify the air 5x per hour in 220 ft² and a 1,100 ft² space once/hour. Perfect for small to medium-sized rooms such as bedroom, nursery, study, living room, and office area. 3-stage filter safely removes 99.97% of airborne particles as small as 0.3 microns, including mold, allergens, germs, dust, pet dander, pollen, odors, and cigarette smoke.