The heat exchanger and the heating / cooling cycle for an air conditioner of a vehicle and method for controlling and / or regulating a heating / cooling circuit of an air conditioner

According to the invention a heat exchanger arrangement (1) for an air conditioner of a vehicle with a heating / cooling circuit (32) is provided comprising a first by a coolant (K1) on the primary side can be acted upon heat exchanger (2) and a second of a refrigerant (K2) on the primary side can be acted upon heat exchangers saw (4), the secondary side in an airflow channel (6) are connected, wherein the second heat exchanger (4) into two sub-elements (4a, 4b) is divided and the first heat exchanger (2) in the air flow direction (R), between the two sub-elements (4a, 4b) is connected.