Enjoy a comfortable home climate with this versatile Commercial Cool unit. It cools, dehumidifies, and circulates air to stand up to summer heat. Offering immediate, uninterrupted comfort, this Portable Air Conditioner features easy-to-use controls and is quiet while you sleep. This unit comes with rolling castors for easy-to maneuver mobile comfort and everything needed for an effortless installation. Keeps a room, home, bedroom, apartment, dorm or garage comfy during the summer months when the heat sets in. Works in double hung or sliding windows only, no crank windows. To minimize noise and vibration, the air conditioner should be placed on a firm floor. For safe and secure positioning, place the unit on a smooth, level floor strong enough to support the unit. For a better cooling, make sure all the windows and doors are closed. Connect the duct and make sure it can function properly. Also note that, micro processor control delays the compressor from operating until 3 mins have passed.