HEPAClean air purifier captures up to 95 percent of airborne particles that are 2 microns and above. The filter in this compact but powerful purifier effectively helps capture dust, smoke, pollen and pet dander, circulating and cleaning the air in a small room up to five times an hour. Design features three speeds, a handy night light, an optional on/off ionizer to boost cleaning performance and a filter change reminder light to let you know when it is time to change the filter. This effective air purifier also helps reduce common household odors such as those from cooking, pets or the bathroom and nursery. This air purifier fits great on a desk or tabletop and is designed to be placed in either a horizontal or vertical position to fit in small spaces. It is recommended for a small room (80 square feet).