Abstract: A heat exchanger for use in a vehicle air conditioning system is provided. The heat exchanger includes a plurality of heat exchanger registers adapted to transfer heat from an air flow passing thereby to a refrigerant flowing therethrough. The heat exchanger further includes a plurality of junction elements in fluid communication with the heat exchanger registers. Each of the junction elements is disposed between one of a pair of top collector lines and a pair of bottom connector lines of the heat exchanger registers. The junction elements have a hydraulic flow area that militates against pressure losses over the heat exchanger. A heat exchanger having an arrangement of three heat exchanger registers and a vehicle air conditioning system including the heat exchanger are also provided.