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. H13 True HEPA filter: 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. Quiet Operation: Operates as low as 24 dB in sleep mode and light off function to help create a peaceful and relaxing environment. User-Friendly Touch Control Panel: 7 touch screen buttons with on/off, fan speed setting, timer setting, sleep mode, light off, display lock, and filter replacement indicator. Tested and Trusted: Certified by Energy Star / FCC / TUV / CARB / EPA. Easy Replacements: True HEPA Filter Replacement Aurora AR10F.