1. air source heat pump,hot water heater; 2. used for swimming pool,hotel, etc; 3. environment friendly; ... ,R134a Air source heat pump water heaterBrief introductionAir source heat pump water heater is one of the most advanced water heating equipments. It is ... ; hot water source for swimming pool, factory , farm, etc.6. Heating capacity: 18kw,35kw,70kw RWC series air source heat pump water heater