The Atmosphere™ Air Purifier offers state-of-the-art air purification technology that features three pre-installed filters: a cleanable pre-filter, a replaceable carbon (odor) filter,* and a replaceable HEPA (particulate) filter.* The Atmosphere Air Purifier also features a remote control unit with five operating speeds, a programmable timer, an integrated particle sensor, and an electronic monitoring system that alerts you when the filters need replacing or cleaning. The system is also backed by a two-year limited warranty. 29"H x 15"W x 11"D. 23.2 lbs.