a refrigeration cycle including a compressor that compresses and discharges a refrigerant, a heating unit that heats air blown to an air-conditioned space using the refrigerant discharged from the compressor as a heat source, and a cooler unit that evaporates the refrigerant to cool a battery;

an outdoor heat exchanger configured to exchange heat between the refrigerant or a heat medium that exchanges heat with the refrigerant and an outside air;

a cooling necessity determination unit configured to determine whether or not to cool the battery based on whether or not a physical quantity having a correlation with a temperature of the battery is equal to or more than a predetermined reference physical quantity;

a determination reference setting unit configured to set the reference physical quantity for the cooling necessity determination unit depending on the outdoor heat exchanger functioning as heat absorber or radiator; and

a cooling control unit configured to cool of the battery using the cooler unit when the cooling necessity determination unit determines that the battery is to be cooled, wherein

the determination reference setting unit sets a second reference physical quantity when the outdoor heat exchanger functions as heat absorber, the second reference physical quantity being smaller than a first reference physical quantity which is set when the outdoor heat exchanger functions as radiator.