Patent ID: 8650897

Claim:
A heat pump system comprising: a heat source unit having a compressor arranged to compress a refrigerant, a heat-source-side heat exchanger, and a heat-source-side switching mechanism switchable between a radiating operation state in which the heat-source-side heat exchanger functions as a radiator of refrigerant and an evaporating operation state in which the heat-source-side heat exchanger functions as an evaporator of refrigerant; a first usage unit operable to perform a hot-water supply operation in which an aqueous medium is heated by heat radiation of refrigerant in a first usage-side heat exchanger, the first usage unit being connected to the heat source unit with the first usage-side heat exchanger functioning as a radiator of refrigerant when the heat-source-side switching mechanism is in the evaporating operation state; and a second usage unit operable to perform an air-cooling operation in which an air medium is cooled by the evaporation of refrigerant in a second usage-side heat exchanger, and an air-warming operation in which the air medium is heated by the heat radiation of the refrigerant in the second usage-side heat exchanger, the second usage unit being connected to the heat source unit with the second usage-side heat exchanger functioning as an evaporator of refrigerant when the heat-source-side switching mechanism is in the radiating operation state and as a radiator of refrigerant when the heat-source-side switching mechanism is in the evaporating operation state, the first usage unit and the second usage unit being incapable of individually selecting and performing the hot-water supply operation, the air-cooling operation, or the air-warming operation, and the heat pump system being capable of switching to and operating in a thermoregulation mode different from the switched state of the heat-source-side switching mechanism in response to a thermoregulation mode command issued by a first usage-side controller configured to issue commands to the first usage unit, a second usage-side controller configured to issue commands to the second usage unit, or a centralized controller that is separate from the first usage-side controller and the second usage-side controller.