The outdoor unit of your central air conditioning system, usually located at the side or back of your house, contains the compressor, condenser coil, a fan and various electrical components.
The heated refrigerant vapor from inside your house moves through the compressor, which heats the refrigerant to an even higher temperature. The higher the temperature of the refrigerant, the faster heat is transferred to the outdoor air. The highly pressurized and heated refrigerant moves to the condenser coil and a fan blows air over it, cooling the coil, and the heat from inside your house disperses into the atmosphere.
As the refrigerant in the condenser coil cools, it returns to its original liquid form and is pumped back into your house as the cycle repeats.
The refrigeration cycle summarized
When the temperature in your house rises above the temperature you’ve programmed into the thermostat, the thermostat turns on the central air conditioning system.
A fan in the system draws warm air from the rooms of your house to the evaporator in the inside unit. The liquid refrigerant is pumped from the outside unit to the evaporator, where the refrigerant vaporizes as it absorbs and removes the heat pumped from the rooms of your house.
The cooled air is pumped back into your house, and the heated, vaporized refrigerant moves heat to the outside unit for dispersal into the atmosphere.
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