1. Heat pump, air source, water heater 2. Restaurant,hotel, villas, etc. 3.high efficiency, enviroment friendly ... series air source heat pump water heater Brief introductionAir source heat pump water heater is one of the most advanced water heating equipments. It is ... when the air temperature is -5oC, and provide 60oC hot water. Features:1. Environment friendly: no air pollution, low energy ...