... ,hotel, villas, etc. 3.high efficiency, enviroment friendly 4.R407C,R134a RWC series air source heat pump water heaterBrief introductionAir source heat ... 1120kW; automatic control, need no person to take care of .4. World famous heat pump compressor;5. Suitable Places: hot water ... , factory , farm, etc.6. Heating capacity: 18kw,35kw,70kw. RWC series air source heat pump water heater