Blueair Blue 3210 AutoDesigned for small bedrooms Filters the air at a rate of about 5x an hour (or about every 12 minutes) in a 17 m room to effectively remove up to 99. 97% 0. 1 m particles like dust, pollen, mold and pet dander that can cause and exacerbate allergies. Clean air at the touch of a button The one touch enabled Auto mode is designed to help you maintain a comfortable and safe home environment. When enabled, the setting automatically adjusts fan speed based