Let's Clear the Air Faster Only Blueair air purifiers use HEPASilent™ technology, quickly cleaning 20 m² in 12.5 minutes or up to 48 m² in 30 minutes. Let's Clear the Air Better Control 4 fan speeds (Night, 1-3), select auto, adjust brightness levels and enable/disable child lock with just two buttons. The five-color air quality indicator (AQI) uses a particle sensor to detect pollution. Air quality reading is based on the concentration of fine particles (PM 2.5) in your space. Let's Clear the Air Smarter Welcome home feature Your air purifier will go on standby when you leave the home and turn back on when you are getting close. Accurate filter tracking Using Blueair's proprietary RealTrack algorithm, you can easily view the most accurate filter usage and reorder before it expires. Voice control assistance Control your air purifier hands-free and enjoy even more convenience. Let's Clear the Air Quieter The Blue Max 3250i operates on low at 18dB, and is never louder than 46dB³. Quietest by QuietMark⁴. Let's Clear the Air Longer New and longer lasting filters (6-9 months) Using Blueair's new proprietary RealTrack algorithm, you can easily view the most accurate filter usage and reorder before it expires. It uses advanced machine learning to adjust its calculations based on your unique environment, taking into account factors like fan speed, usage time and pollutant levels.
