Air cleaner/odor reducer helps capture up to 99.9 percent of larger visible particles and microscopic particles as small as 0.3 microns. Three stage cleaning system includes odor-reducing pre-filter that helps reduce certain VOCs and airborne gasses. Patented permanent washable and reusable QuietClean IFD perma filter that attracts dust and allergens from the air like a magnet. Its honeycomb-style design doesn't resist airflow like paper filters for quieter operation. Electronic ionizer with smart control intelligence settings that do all the thinking for you. Air cleaner provides four purification levels: sleep, general, allergen and max. Filter indicator light tells you when to clean permanent filter (approximately four times a year). Automatic timer can be set to turn off after two, four or eight hours. Unit continuously cleans air in a 250 square feet room up to five times per hour. Includes an oscillation setting and soft blue accent lighting. Is Energy Star rated.