Abstract: An accumulator heat exchanger comprising: an accumulator vessel with an internal volume; a heat exchange coil disposed within the internal volume of the accumulator vessel wherein the heat exchange coil encloses an axially extending inner volume; a first inlet conduit extending from outside of the accumulator vessel to an inner axial end of the first inlet conduit within the internal volume of the accumulator vessel, and a first outlet conduit extending from within the internal volume of the accumulator vessel to outside of the accumulator vessel; and a second inlet conduit for subcooled refrigerant fluid and a second outlet conduit for subcooled refrigerant fluid. The second inlet conduit and second outlet conduit provide an inlet and outlet flow path for the heat exchange coil. The first inlet conduit comprises a plurality of outlets, each adapted to direct refrigerant fluid towards the heat exchange coil.