Iliving ILG938 Air Purifier with HEPA Filter Newly upgraded 2012 Model with hospital grade washable HEPA Filter, 5 level adustable purification process according to room size Coverage up to 3000 sq. ft with Adjustable Timer to set start and shut off times Remote control lets you control ozone levels, coverage area, timer, sterilizer, and anion functions Air Purification Methods: 5 stage - pre-filter, True HEPA filter, Tio2 filter, UV lamp and ionizer 5 different fan speeds