Air conditioning device for vehicle

Reliable and uniform defrosting is quickly performed according to the condition of a vehicle. An air conditioning device for a vehicle includes: a compressor that compresses a refrigerant; an outdoor heat exchanger that exchanges heat between the refrigerant and the outside air; a refrigerant circuit having a heat-absorbing heat exchanger for absorbing heat of a refrigerant from a heat-absorbing object; and a control device that controls the refrigerant circuit, the control device being capable of selectively executing a plurality of defrosting modes including a hot gas defrosting mode in which the outdoor heat exchanger is defrosted by the refrigerant compressed in the compressor, and a heat absorption defrosting mode in which the outdoor heat exchanger is defrosted by the refrigerant compressed in the compressor. An outdoor heat exchanger is defrosted by a refrigerant that absorbs heat in a heat-absorbing object and is compressed by the compressor, and a selection condition for preferentially selecting and