How the AC system works
There are three primary components in a vehicles air conditioning system, the compressor condenser and evaporator. These parts are connected by tubes and hoses to form a continuous path, with two distinct sections: high pressure and low pressure.
In order to transfer heat from the vehicles interior to the outside air, a chemical refrigerant is circulated throughout the system.
In theory the ac system accomplishes the same task as the engine cooling system in that both absorb the heat from one area and release it to another (heat transfer).
The refrigerant repeatedly alternates between a liquid and a gas as it circulates throughout the system.