AIR-CONDITIONING SYSTEM FOR MOTOR VEHICLE

An air-conditioning system for a motor vehicle is disclosed. The air-conditioning system includes a refrigerant circuit for being flowed through by a refrigerant. In the refrigerant circuit, a compressor for compressing the refrigerant, a condenser for condensing the refrigerant subject to passing condensation heat on to a fluid conducted through the condenser, an expansion device for expanding the refrigerant and an evaporator for evaporating the refrigerant are arranged. A coolant circuit is provided fluidically separated from the refrigerant circuit for being flowed through by a coolant. In the coolant circuit at least one heat source for heating the coolant is arranged. The coolant circuit is thermally connected to the refrigerant circuit via the evaporator of the refrigerant circuit, so that in the evaporator heat from the coolant is transferrable to the refrigerant.