An HVAC device for a vehicle that performs air conditioning and running with use of stored electric power as a power source, the HVAC device comprising a compression refrigerant cycle, characterized in that the HVAC device being configured to: form, in a heating and dehumidifying operation mode of the HVAC device, a flow path configuration in which, through actuation of a compressor constituting the compression refrigerant cycle and actuation of first blower means, interior air of the vehicle is introduced via a vehicle interior air intake duct, then, through switching of first flow path switching means, the interior air of the vehicle is supplied to an evaporator and a dehumidifying member, then, through switching of second flow path switching means and third flow path switching means, the interior air of the vehicle is caused to pass through a condenser, then the interior air of the vehicle is caused to pass through electric heating means, and, through switching of fourth flow path switching means, the interior air of the vehicle is caused to flow back to a vehicle interior via a vehicle interior air reflux duct; form, in a regenerating operation mode of the HVAC device, a flow path configuration in which, through actuation of the compressor constituting the compression refrigerant cycle and actuation of second blower means, outside air is taken in from an outside air introduction duct, then the outside air is supplied to the electric heating means and the condenser, then, the introduced outside air is caused to pass through the dehumidifying member and the evaporator in the stated order, and, the outside air is exhausted outside the vehicle from a first exhaust duct; and form, in a cooling and dehumidifying operation mode of the HVAC device: a flow path configuration in which, through actuation of the compressor constituting the compression refrigerant cycle and actuation of the first blower means, the interior air of the vehicle is introduced via the vehicle interior air intake duct, then, the interior air of the vehicle is supplied to the evaporator and the dehumidifying member, the introduced interior air of the vehicle is caused to flow back to the vehicle interior via the vehicle interior air reflux duct; and a flow path configuration in which, through actuation of the second blower means, the outside air taken in from the outside air introduction duct is supplied to the condenser, and then the passing outside air is introduced to a second exhaust duct to be exhausted outside the vehicle. form, in a heating and dehumidifying operation mode of the HVAC device, a flow path configuration in which, through actuation of a compressor constituting the compression refrigerant cycle and actuation of first blower means, interior air of the vehicle is introduced via a vehicle interior air intake duct, then, through switching of first flow path switching means, the interior air of the vehicle is supplied to an evaporator and a dehumidifying member, then, through switching of second flow path switching means and third flow path switching means, the interior air of the vehicle is caused to pass through a condenser, then the interior air of the vehicle is caused to pass through electric heating means, and, through switching of fourth flow path switching means, the interior air of the vehicle is caused to flow back to a vehicle interior via a vehicle interior air reflux duct; form, in a regenerating operation mode of the HVAC device, a flow path configuration in which, through actuation of the compressor constituting the compression refrigerant cycle and actuation of second blower means, outside air is taken in from an outside air introduction duct, then the outside air is supplied to the electric heating means and the condenser, then, the introduced outside air is caused to pass through the dehumidifying member and the evaporator in the stated order, and, the outside air is exhausted outside the vehicle from a first exhaust duct; and form, in a cooling and dehumidifying operation mode of the HVAC device: a flow path configuration in which, through actuation of the compressor constituting the compression refrigerant cycle and actuation of the first blower means, the interior air of the vehicle is introduced via the vehicle interior air intake duct, then, the interior air of the vehicle is supplied to the evaporator and the dehumidifying member, the introduced interior air of the vehicle is caused to flow back to the vehicle interior via the vehicle interior air reflux duct; and a flow path configuration in which, through actuation of the second blower means, the outside air taken in from the outside air introduction duct is supplied to the condenser, and then the passing outside air is introduced to a second exhaust duct to be exhausted outside the vehicle. a flow path configuration in which, through actuation of the compressor constituting the compression refrigerant cycle and actuation of the first blower means, the interior air of the vehicle is introduced via the vehicle interior air intake duct, then, the interior air of the vehicle is supplied to the evaporator and the dehumidifying member, the introduced interior air of the vehicle is caused to flow back to the vehicle interior via the vehicle interior air reflux duct; and a flow path configuration in which, through actuation of the second blower means, the outside air taken in from the outside air introduction duct is supplied to the condenser, and then the passing outside air is introduced to a second exhaust duct to be exhausted outside the vehicle.