1. CE, CB, TUV, ISO, ETL, CSA 2. Save 30% electricity than normal AC 3. Easy install ,free maintaince Sunchi hybrid solar air-conditioner is made up of three parts: heat pump,indoor fan coil pipe and heat pipe solar collector. Firstly, Solar collector absorbs outside solar energy to heat the inside medium . Refrigerant from the compressor goes through the heating collector and undertakes a heat ...