Abstract: A compressor assembly has a pulley assembly and a compressor, with a mounting plate mounted therebetween. The compressor includes a front head, a rear head, and a piston assembly operably mounted between the front head and the rear head. A plurality of case bolts extend through the mounting p late, the front head, and into the rear head.

Abstract: A compressor assembly has a pulley assembly and a compressor, with a mounting plate mounted therebetween. The compressor includes a front head, a rear head, and a piston assembly operably mounted between the front head and the rear head. A plurality of case bolts extend through the mounting p late, the front head, and into the rear head.

Abstract: An auxiliary power unit has an auxiliary engine, an auxiliary compressor, and a generator, and includes fittings for integrating with a vehicle's heating and cooling systems. The fittings may include first and second heater fittings adapted to be operably integrated into the heating system of the vehicle for diverting flow of the radiator fluid to the auxiliary engine. The auxiliary power unit also includes an AC fitting adapted to be operably installed between the evaporator and the vehicle compressor for enabling flow of AC fluid from the evaporator to the auxiliary compressor, and an AC valve adapted to be operably installed between the vehicle compressor and the condenser for enabling flow of the AC fluid from either the vehicle compressor or the auxiliary compressor.