This Article prepared the air-conditioning unit with supplying cooling air and warm water. The unit can work in three modes: only cooling air, only supplying warm water and cooling air with supplying warm water. The analysis results showed that the unit is more efficient than traditional systems, the maximum coefficient of performance (COP) is about 5.3 at cooling mode, the COP is 5.7 at mode of heating, and the COP is 4.5 at cooling and water heater mode