An automotive air conditioner (1) includes a compressor (2), an external heat exchanger (5), an evaporator, and an auxiliary condenser (3). The external heat exchanger (5) functions as an external condenser during a cooling operation and also functions as an external evaporator during a heating operation. A first expansion valve (41) is provided in a first refrigerant circulation passage through which the refrigerant discharged from the compressor (2) is able to circulate by passing sequentially through the external heat exchanger (5) and the evaporator and returning to the compressor (2). A second expansion valve (42) is provided in a second refrigerant circulation passage through which the refrigerant discharged from the compressor (2) is able to circulate by passing sequentially through the auxiliary condenser (3) and the external heat exchanger (5) and returning to the compressor (2). The second expansion valve (42) regulates the valve opening degree such that the refrigerant state at an inlet side of the compressor (2) during a heating operation is in a range where the dryness of refrigerant is greater than or equal to 0.9 and the superheat of refrigerant is less than or equal to 5°C.
