A heater device includes: a distance specifying portion that specifies a distance between a sensing subject, i.e., an occupant and a heater main body as a sensed distance; and a moving mechanism that moves the heater main body. The heater device further includes a heater position control portion that controls the moving mechanism such that the distance between the sensing subject, i.e., the occupant and the heater main body is adjusted to a target distance based on the sensed distance, which is specified by the distance specifying portion.

A refrigeration system includes a primary evaporator that cooperates with a compressor, which compresses first refrigerant containing lubricant oil, to form a refrigeration cycle that circulates the first refrigerant. At the primary evaporator, the first refrigerant absorbs heat from second refrigerant and is thereby evaporated. The refrigeration system further includes a condenser, at which the second refrigerant releases heat to the first refrigerant and is thereby condensed. The refrigeration system also includes a secondary evaporator that cooperates with the condenser to form a refrigerant circulation circuit, in which the second refrigerant is circulated. At the secondary evaporator, the secondary evaporator absorbs heat from a primary cooling subject and is thereby evaporated. A refrigerant flow passage of the primary evaporator and a refrigerant flow passage of the condenser are independently formed, so that the refrigeration cycle and the refrigerant circulation circuit are independently formed.

In a vehicle air conditioning apparatus including a first air conditioning system capable of performing heating operation using a heat pump, a second air conditioning system capable of performing heating operation using a heater, and a controller configured to control at least the first air conditioning system and the second air conditioning system, when a remaining capacity of a battery that supplies power to a motor of a vehicle exceeds a predetermined threshold, the controller performs the heating operation by the second air conditioning system and operates the first air conditioning system in a defrosting mode. When the remaining capacity of the battery exceeds the predetermined threshold during the heating operation by the first air conditioning system, the controller switches from the heating operation by the first air conditioning system to the heating operation by the second air conditioning system.