Hydrofluorocarbon refrigerant composition of the heat pump water heater

The current compressor technology, the heat pump water heater, to provide a reliable (low discharge temperature and discharge pressure) efficient (higher capacity and high efficiency) which can be used in a manner hydrofluorocarbon refrigerant composition . Refrigerant compositions, pentafluoroethane (HFC-125), difluoromethane (HFC-32), tetrafluoroethane (HFC-134a), and a blend of tetrafluoropropene (HFO-1234ze). .FIELD 1