... pump water heater 1.High efficiency,safety,reliable 2.Automatic defrost 3.Safety,reliable 4.R407c & R410a Refrigerant heat pump water heaterHigh ... as 60%~80% compared with oil boiler, gas boiler, coal boiler, electricity water heater etc.Environment-friendly: ODP ... , electric shock,gas poisoning. Model KFRS-90IIheating capacitykw87.4water flow rateL/h1800outlet water-temp 55max outlet water temp ...