An air conditioning system comprises a compressor, a rotary engine, and a condenser. The rotary engine comprises at least one drive shaft. The at least one drive shaft is operatively connected to the compressor and to the fuel tank. The condenser is operatively connected to the compressor. The evaporator is operatively connected to the condenser and to the compressor. The rotary engine combusts fuel to rotate the at least one drive shaft. Rotation of the at least one drive shaft operates the compressor to cause working fluid to flow such that the evaporator air conditions the passenger compartment.