AIR CONDITIONER FOR VEHICLE

PROBLEM TO BE SOLVED: To improve amenity in an occupant by heating in a cabin even in a state where a cabin outside heat exchanger cannot sufficiently absorb heat from the atmosphere. SOLUTION: An air conditioner 1 for a vehicle includes a compressor 100, the cabin outside heat exchanger 109 arranged outdoors the vehicle, a pressure reducing valve 101 for reducing pressure of a refrigerant, cabin inside heat exchangers 10 and 11 arranged indoors the vehicle, and a four-way valve 101. The air conditioner 1 for the vehicle includes a refrigerant heater 105 for heating the refrigerant, a control device A for controlling the refrigerant heater 105, and an outside air temperature sensor 114. The control device A is constituted so that the refrigerant heater 105 is put in an operation state when the air temperature outside of a cabin detected by the outside air temperature sensor 114 is lower than the predetermined temperature, and puts the refrigerant heater 105 in a nonoperating state when the temperature is the predetermined temperature or more. COPYRIGHT: (C)2011,JPO&INPIT