Enjoy a comfortable home climate with this versatile 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. This unit comes with rolling casters 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 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 better cooling， make sure all the windows and doors are closed. Connect the duct and make sure it can function properly. Also， note that microprocessor control delays the compressor from operating until 3-mins have passed.