The Dust Free® Active Air Purifier is a compact, duct mounted, air purifier that is effective at reducing dust, dander, VOC’s, germs, odors and other allergens, from the indoor air. The Dust Free® Active Air Purifier utilizes ionic oxidation, negative ionization, and UV-C light to purify the air and surfaces. Installed into the supply plenum of your HVAC system, the Dust Free® Active Air Purifier’s environmentally-friendly oxidizers and negative ionization system safely and effectively purifies the air in your home.