603 In rooms as large as 640 square feet, our patented 2-stage HEPASilent™ technology and 3-stage progressive filter structure captures 99. 97% of 0.
Advances in fan and filter design have dramatically improved efficiency, gaining the new 603 even better Clean Air Delivery Rates than the original Best of Class 501.
Value-adding features include quiet operation, low energy use, galvanized steel construction, a 5-year warranty, and a convenient Change Filter Indicator that reminds you to change your filters every six months. The NEW Blueair 603 Air Purifier delivers more clean air at a faster rate with less noise. 1 micron particles on speed one, including allergy-provoking pollen, dust mites, mold spores and pet dander.