The air conditioning in a central air conditioning system ensures a process of aspiration of hot air and removal of heat by supplying cold air through the pipes of the house.   In a split system, the compressor condenses and the refrigerant circulates through the outdoor unit, switching from gas to liquid. The liquid then passes through an internal evaporation coil or a refrigerated compartment. The fan of the indoor unit circulates the air from the room through the wings of the evaporator. The metal blades of the evaporator exchange heat energy with the surrounding air. There, the refrigerant changes from liquid to vapor, dissipating heat from the surrounding air. As the heat is extracted from the air, the air is cooled and blown back into the house. From there, the condenser or outdoor unit dissipates all the heat by turning the refrigerant vapor back into a liquid. As the liquid comes out of the evaporator again, it becomes a cool, low-pressure gas, which eventually returns to the condenser and begins to move again. This process continues until the home reaches the desired cooling temperature according to the programmed settings of the thermostat.