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Sustainable reduction of the CO2 emissions of future vehicles goes hand in hand with the increase in efficiency of ancillary units. Of particular importance is the reduction of fuel consumption attributed to the vehicle's air conditioning system. The innovative development of a condenser with a 3-pass subcooling zone renders it possible to significantly increase the efficiency of the cooling circuit. This is applicable both in the case of current and future refrigerants. The basis for increasing the efficiency of the condenser is rooted in the systematic analysis of the local heat transfer functions, pressure drops and implementation of an improved flow path configuration. The current condenser design, which includes the functionality of a receiver/dryer with a dedicated subcooling zone, is effective at providing stable liquid refrigerant to the TXV under a variety of conditions.