1. Heat pump, air source, water heater 2. Restaurant,hotel, villas, etc. 3.high efficiency, ... friendly 4.R407C,R134a RWC series air source heat pump water heaterBrief introductionAir source heat pump water heater is one of the ... for Hotels, Villas, Hair Salon, Foot Massage, etc; hot water source for swimming pool, factory , farm, etc.6. Heating capacity: 18kw ...