... 3,high efficiency and economical air source heat pump +boiler water heater : We-Yaohua group are a manufacturer focus at OEM ... power consumption is 1/4 compared with electric water heater.2. Split water heater heat pump, heating capacity from 13000BTU--180000BTU, COP ... supply hot water at home, bathing spot, bathtub, public bath, hotel, school etc. air source heat pump +boiler water heater YASA-135HL ...