1) High Efficiency Compressor. 2) Hydrophilic Fins & Inner Threads Copper Tube. 3)Quiet and Modern design. Features:1.Energy saving,Quiet operation.2.Sleeping Mode,Remote control.3.Capacity:9000~24000BTU4.Refrigerant:R22,R407.5.Wide voltage design.6.Dual air guide plate technology.7,Timed switch-on and Switch -off.8.Memory functions.9.Volatage:220V/50Hz,240/6Hz. Split Type Air Conditioner