Novel household water source heat pump

The utility model discloses a novel household water source heat pump which comprises a water intake well, a water return well, a heat insulation middle water storage tank, a water source heat pump unit and a PLC (Programmable Logic Controller), a water intake pipe is arranged between the water intake well and the heat insulation middle water storage tank, and a water suction pump is arranged on the water intake pipe; a water return pipe is arranged between the water return well and the heat insulation middle water storage tank and provided with an electromagnetic valve. A water temperature sensor and a water level sensor are further arranged on the heat insulation middle water storage tank; the water source heat pump unit is connected with the heat insulation middle water storage tank through a circulating water pipe, and a circulating pump is arranged on the circulating water pipe. The pumped well water is stored in the heat insulation middle water storage tank, the water source heat pump unit directly utili