Abstract: A refrigeration type air conditioning apparatus employing a heat transfer medium for use in a vehicle having a large passenger area, comprising a vehicle engine driven compressor and a pair of electric motor driven compressors, all of which are connected to a pair of condenser coils via a discharge manifold and to a split evaporator coil via a suction manifold while each of the condenser coils is connected to one half of the evaporator coil via an expansion valve.

Abstract: A method and assembly for air conditioning a motor home vehicle or the like employing a heat transfer medium and cooling both the front passenger area and the rear living area using a single compressor source. The assembly having a compressor driven either by the vehicle's engine or a compressor driven by an electric drive motor, a first and second condenser mounted on the roof of the vehicle, a first, second and third evaporator mounted to a first, second and third blower, the first evaporator and first blower mounted under the dash of the vehicle and the second and third evaporators and second and third blowers mounted on the roof of the vehicle.