An air conditioning device for vehicle, driven with coolant and refrigerant, the device comprising: a first water-refrigerant heat exchanger which performs a heat exchange between a coolant for heat transportation and a low-temperature and low-pressure refrigerant, and vaporizes the refrigerant; a second water-refrigerant heat exchanger which performs a heat exchange between a high-temperature and high-pressure refrigerant and the coolant for heat transportation, and condenses the refrigerant; a compressor which compresses the refrigerant to a high-temperature and high-pressure refrigerant, and discharges the refrigerant; a heater core which heats an interior of a vehicle by using heat of the high-temperature and high-pressure refrigerant discharged by the compressor; an evaporator which performs a heat exchange between a low-temperature and low-pressure refrigerant and suction air to be fed to an interior of a vehicle; a condenser which releases heat from the high-temperature and high-pressure refrigerant, and condenses the refrigerant; a switch (13, 14) which can switch among a first state where the refrigerant flows to a first heating refrigerant circuit including the compressor, the second water-refrigerant heat exchanger, and the first water-refrigerant heat exchanger in this order, and a second state where the refrigerant flows to a second heating refrigerant circuit including the compressor, the second water-refrigerant heat exchanger, the condenser, and the evaporator in this order; a temperature sensor which detects a temperature of the coolant circulating in the first water-refrigerant heat exchanger and a cooling path of a heat generating component of the vehicle, the temperature being detected when the coolant flows in the first water refrigerant heat exchanger; and a controller which determines whether or not to permit driving of the compressor, based on the temperature detected by the temperature sensor. a first water-refrigerant heat exchanger which performs a heat exchange between a coolant for heat transportation and a low-temperature and low-pressure refrigerant, and vaporizes the refrigerant; a second water-refrigerant heat exchanger which performs a heat exchange between a high-temperature and high-pressure refrigerant and the coolant for heat transportation, and condenses the refrigerant; a compressor which compresses the refrigerant to a high-temperature and high-pressure refrigerant, and discharges the refrigerant; a heater core which heats an interior of a vehicle by using heat of the high-temperature and high-pressure refrigerant discharged by the compressor; an evaporator which performs a heat exchange between a low-temperature and low-pressure refrigerant and suction air to be fed to an interior of a vehicle; a condenser which releases heat from the high-temperature and high-pressure refrigerant, and condenses the refrigerant; a switch (13, 14) which can switch among a first state where the refrigerant flows to a first heating refrigerant circuit including the compressor, the second water-refrigerant heat exchanger, and the first water-refrigerant heat exchanger in this order, and a second state where the refrigerant flows to a second heating refrigerant circuit including the compressor, the second water-refrigerant heat exchanger, the condenser, and the evaporator in this order; a temperature sensor which detects a temperature of the coolant circulating in the first water-refrigerant heat exchanger and a cooling path of a heat generating component of the vehicle, the temperature being detected when the coolant flows in the first water refrigerant heat exchanger; and a controller which determines whether or not to permit driving of the compressor, based on the temperature detected by the temperature sensor.