Abstract: A system, method and apparatus for cooling the electronic components that regulate power and commutation of a refrigerant compressor motor in an air conditioning system. The electronic components are juxtaposed upon a heat sink provided with a refrigerant passageway. The heat sink is fluidly disposed in the refrigeration line between the evaporator assembly and compressor such that refrigerant returning from the evaporator assembly to the compressor of the air conditioning system travels directly to the heat sink and through the refrigerant passageway before reaching the compressor.