SHARP KC-150U Plasmacluster Air Purifier with Humidifying Function Energy Star air purifier with humidifying function and 3-stage filtration True HEPA filter removes airborne irritants; antimicrobial layer Actively cleans indoor air using Plasmacluster Ion technology 3 fan speeds and Quick Clean mode; for rooms up to 347 square feet Measures 11-3/8 by 15-3/4 by 24-3/4 inches; 1-year limited warranty