Enjoy a comfortable home climate year-round with this versatile BLACK+DECKER unit. It cools, dehumidifies, circulates air in the summer, and provides heat during those cold winter months. Offering immediate, uninterrupted comfort, this Portable Air Conditioner features easy-to-use LED electronic controls and is quiet while you sleep (75dB on high setting). This unit comes with rolling castors and side carrying handles for easy-to maneuver mobile comfort and everything needed for an effortless installation. Keeps a room, home, bedroom, apartment, dorm or garage that is approximately 150 - 250 square feet or 10 x 20 foot room pleasant and comfy during the summer months when the heat sets in. Also keeps a room that is approximately 200 - 325 square feet or 15 x 22 foot room warm in the winter. Works in double hung or sliding windows only, no crank windows.