The company's research and development of heat pump hot water unit COP values above 7.0 (that is, efficiency in air-conditioning hot water supply up to 700%), and free of any harmful substances and emissions, this product uses the Earth's atmosphere and heat resources, energy water heating air conditioning units, is one of innovation, environmental protection and energy saving, safety and reliable, multi-purpose a machine. Bo Ding heat pump hot water system can heat water (air conditioning free of charge), air conditioning (hot water to free), cold water, hot water supply, a system can replace old boilers and air conditioning systems