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How Your Cypress Tx Air Conditioning Works

Your air conditioning is an important part of your home, but you may not be aware of how it produces the cool, dehumidified air that makes your indoor environment so comfortable for you and your family. The basic parts are as follows:

  • Refrigerant
  • Compressor
  • Condenser
  • Evaporator Coil
  • Expansion Valve

Air Conditioning Refrigerant

The refrigerant is the fluid that is pumped through the air conditioning system. It has a very low boiling point, which means that it can change from a liquid to a gas (vapor) at a very low temperature.


The compressor pumps the refrigerant through its components in a big loop. The refrigerant enters the compressor as a low-pressure warm vapor and leaves as a high-pressure hot vapor.


After the refrigerant leaves the compressor, it moves to the condenser. In this part of the unit, the hot refrigerant vapor is cooled down by air blowing over the condensing coils by the condenser fan as it moves through the coils. As it cools, it changes state from a hot vapor to a hot liquid and moves onto the expansion valve. The compressor, condenser coil and condenser fan are all situated in the condensing unit. This is the box you see in your back yard.

Expansion Valve

The hot liquid refrigerant moves through the tiny opening in the valve on one side. It emerges on the other as a cool, low pressure mist. As the gas expands, it cools. The low-pressure, cool liquid mist moves onto the evaporator coil.

Evaporator Coil

The low pressure cold liquid runs through the evaporator coil, which is located in the plenum of your furnace. The hot air blows across the evaporator coil and heats it up. At the same time, the cold coil cools off the air by blowing across it and back into your home. The refrigerant heats up to the boiling point and evaporates into a vapor. It moves onto the compressor and condensing unit and the cooling cycle starts again.

For help with all your air conditioner needs call Air Depot of Cypress Texas. Our family-owned business has been serving area residents for 30 years.

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