Blueair Blue Pure 211i Max Smart Air Purifier

Only Blueair air purifiers use HEPASilent™ technology, quickly cleaning 635 ft² in 12.5 minutes or up to 1,524 ft² in 30 minutes. Control 5 fan speeds (Night, 1-4), select auto mode, enable child lock, control brightness and get filter expiration reminder. Quick air quality readings via an easy LED 5-color indicator, display on unit or within the app. Air quality reading is based on the concentration of fine particles (PM 1, 2.5 and 10) in your space. Your air purifier will go on standby when you leave the home and turn back on when you are getting close. Using Blueair’s proprietary RealTrack algorithm, you can easily view the most accurate filter usage and reorder before it expires. Control your air purifier hands free and enjoy even more convenience. The Blue Pure 211i Max operates on low at 23dB, and is never louder than 53dB³. Quietest by QuietMark.