A heat pump-type heating and hot-water supply apparatus (100, 200) comprising: a first heat pump circuit including a first compressor, a first water/refrigerant heat exchanger, first flow rate adjustment means, a first heat source side heat exchanger, and a first refrigerant pipe connecting them sequentially; a second heat pump circuit including a second compressor, a second water/refrigerant heat exchanger, second flow rate adjustment means, a second heat source side heat exchanger, and a second refrigerant pipe connecting them sequentially; and a heating hot-water circuit including a heating load, a circulation pump, the first water/refrigerant heat exchanger, the second water/refrigerant heat exchanger, and a hot water pipe connecting them sequentially; characterized in that the heat pump-type heating and hot-water supply apparatus (100, 200) comprises: a hot-water supply refrigerant circuit including a hot-water supply load, an outgoing refrigerant pipe through which refrigerant flowing from the second compressor to the hot-water supply load flows, and a return refrigerant pipe through which refrigerant flowing from the hot-water supply load to the second flow rate adjustment means flows; and a third water/refrigerant heat exchanger configured to exchange heat between the refrigerant flowing through the return refrigerant pipe and water flowing through the hot water pipe. a first heat pump circuit including a first compressor, a first water/refrigerant heat exchanger, first flow rate adjustment means, a first heat source side heat exchanger, and a first refrigerant pipe connecting them sequentially; a second heat pump circuit including a second compressor, a second water/refrigerant heat exchanger, second flow rate adjustment means, a second heat source side heat exchanger, and a second refrigerant pipe connecting them sequentially; and a heating hot-water circuit including a heating load, a circulation pump, the first water/refrigerant heat exchanger, the second water/refrigerant heat exchanger, and a hot water pipe connecting them sequentially; characterized in that the heat pump-type heating and hot-water supply apparatus (100, 200) comprises: a hot-water supply refrigerant circuit including a hot-water supply load, an outgoing refrigerant pipe through which refrigerant flowing from the second compressor to the hot-water supply load flows, and a return refrigerant pipe through which refrigerant flowing from the hot-water supply load to the second flow rate adjustment means flows; and a third water/refrigerant heat exchanger configured to exchange heat between the refrigerant flowing through the return refrigerant pipe and water flowing through the hot water pipe. a hot-water supply refrigerant circuit including a hot-water supply load, an outgoing refrigerant pipe through which refrigerant flowing from the second compressor to the hot-water supply load flows, and a return refrigerant pipe through which refrigerant flowing from the hot-water supply load to the second flow rate adjustment means flows; and a third water/refrigerant heat exchanger configured to exchange heat between the refrigerant flowing through the return refrigerant pipe and water flowing through the hot water pipe.