Patent ID: 7748227

Claim:
A heat pump water boiler having an integral housing comprising: a refrigerant circulating circuit comprising a closed circuit by connecting a compressor, a radiator, a pressure reducing unit and an evaporator, thereby to circulate a refrigerant; a blower fan for blowing wind to the evaporator; a water-refrigerant heat exchanger for exchanging heat with the radiator; a hot-water reserving tank; an inlet line connected to the water-refrigerant heat exchanger for supplying civil water; and a hot-water line connected for supplying the heated hot water to a hot-water terminal such as a faucet or a shower, wherein a portion of the housing includes a first surface that is arranged flush with a suction face of the evaporator and that includes an extending portion protruding out of the first surface, and wherein the hot-water reserving tank is arranged to confront the extending portion formed at a portion of the housing.