The Airocide APS-200 PM 2.5 is the perfect air purifier for those plagued by wildfire smoke or urban pollution. In addition to the Airocide NASA PCO catalyst which eliminates Viruses, VOCs, Bacteria, and Mold, it has two advanced filters in the cartridge which eliminate particulates (PM 2.5 and PM 10), smoke, dust, and dander. The cartridge life is one year, and the warranty is two years.