The air conditioning system cools and dehumidifies the air in the cabin. The refrigerant circulating as a liquid in the high pressure portion of the system evaporates and turns into a gas in the low pressure portion. When the gas expands, cooling occurs, accompanied by the removal of heat from the air supplied by the fan to the passenger compartment. Moisture condenses on the evaporator from the air supplied to the passenger compartment. The A/C compressor, belt-driven from the engine's crankshaft, captures the refrigerant gas, compresses it, and sends it to a condenser located next to the engine's radiator. During the passage through the condenser, the refrigerant passes into a liquid state, giving off the absorbed heat to the oncoming air flow. The liquid refrigerant then enters the evaporator again through the metering valve, thus the heat extraction cycle is repeated.