Abstract: This invention relates primarily to an air cooling apparatus primarily adapted for use in automobiles and comprises a unitary structure consisting of a compressor, condenser and evaporator, all connected to perform their normal operations in the cooling of air and which combined unit is rotated from the crankshaft of an automobile through a unique system of mountings and connections, wherein an adjustable strut structure is provided for supporting one end of the rotating compressor, condenser and evaporator and which supporting strut structure may be attached to an existing automobile with comparative ease, the strut structure also provided with means for maintaining the proper tension on the belt connecting the shaft to the crankshaft of the engine.