Rain Fresh RFA3500 Air Purifier Ozonator, Rain Fresh Air RFA3500 air purification system packs a powerful two way punch to effectively combat irritants: Eliminates smoke, dust, pollen, and other airborne irritants with a powerful ionizer; Combats odors, bacteria, viruses, spores, mold and mildew with a superior ozonator; For the discriminating consumer who wants family and friends to breathe the highest quality, cleanest indoor air, Rain Fresh Air cleaning systems combine the best of all proven air cleaning technologies to create a compact integrated system that produces superior indoor air quality. RFA3500 is highly effective for areas where smoke, smells or airborne matter are a problem. The RFA3500 packs a powerful two way punch that leaves behind clean, Rain Fresh Air. Highly powerful dual-plate ozone generator effectively destroys smoke, odors, germs, bacteria, mold and mildew. Ozone is a very powerful sanitizer and deodorizer that occurs naturally outdoors. Ozone molecules react with irritants that they come in contact with and destroy them. Ozone is very effective against smoke, mold and mildew.High output negative ionizer engine combats odors, smoke, dust, pet dander, pollen and other airborne allergens. Negative ions also occur naturally outdoors. Negative ions attach themselves to airborne irritants and force them out of the air, effectively eliminating them from the air we breathe.