Powerful for Rooms up to 1250ft²With a peak-performing CADR of 142 CFM / 240 m³/h, Homvana Smart Air Purifier H211S clears air in 270 ft² in 12mins, 645ft² in 30mins, and 1250ft² in 60mins. For your larger room such as a living room, open kitchen, loft apartment or basement, one choice to solve them all! 4-Stage Defense with H13 True HEPA Filter High-efficiency 4-stage filtration helps people with asthma and allergies. Includes H13 True HEPA Filter, capturing 99.97% of airborne contaminants of 0.1 microns, like dust, pollen, smoke, and pet dander etc. Search for "B09R1GHVKF" on for the purchase of official filters. Real-time Air Quality IndicatorKnow the real-time air quality and see the changes in air quality at a glance of the distinct indicators like Green(Very Good), Blue(Good), Orange(Moderate), Red(Bad), with the help of the advanced infrared sensor. Smart Auto ModeTap the Auto Mode, and the purifier will auto optimize the fan speed based on