The Blueair 402 SmokeStop Purifier uses a particle filter with active carbon. The SmokeStop filter is recommended for use in rooms where heavy gaseous pollutants such as cigarette and cigar smoke or other VOC's are present. The 402 Smoke Unit effectively purifies air in rooms as large as 365 sq. ft. Using patented 2-Stage HEPASilent™ technology, it captures 99.97% of the tiniest 0.1 micron particles on Speed One, including allergy-provoking pollen, dust mites, mold spores, and pet dander.
This same filter technology earned the larger BlueAir units Best of Class ranking in independent AHAM testing of Clean Air Delivery Rates. The 402 Smoke Unit provides comparable performance for mid-sized rooms.
Value-adding features include quiet operation, low energy use, galvanized steel construction, a 3-Stage progressive filter, a warranty and easy maintenance: simply open the side, slide out used filters and drop in replacements every six months.