The HealthMate offers ozone-free filtration to reduce the level of particles and chemicals in the air and guarantee you hours of clean, pure air. Built with over 60 sq. ft. of HEPA filter material and 15-lbs. of granular carbon and zeolite, the HealthMate has been designed to remove 99.97% of airborne allergens as well as absorb odors, gases, vapors, and chemicals. A 3-speed fan lets you control air output - on high, this amazing unit will easily clean the air in a 20' x 25' room at 6 Air Changes per Hour. HealthMate air purifiers have a low cost of ownership and require very little maintenance - no filter changes for 5 years in a normal, non-smoking household environment! Just vacuum the outer surface of the unit monthly (you do not need to open the unit) using the brush attachment of your vacuum cleaner to remove dust from the outside of the unit and large particles from the prefilter. Solid steel construction with heavy-duty casters for ease of movement. Baked-on powder paint means no off-gassing. Weighs 45-lbs. Dimensions of unit: 23"H x 14 1/2"W x 14 1/2"D. 5-Year Warranty.