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The Fundamentals of How Air Conditioning Works

Last updated 5 years ago

While modern air conditioning systems date back to over a century ago, recent technological advances have resulted in the availability of many highly-capable central air systems with increased efficiency. While your HVAC contractor has a great idea of how these systems work, you may not. Take a look at the information below to learn how air conditioners cool the air inside your home and keep it comfortable.

  • Air Conditioner Components: Your air conditioner has both an internal and external unit. Located inside the home, the internal unit houses an evaporator coil and blower motor. Ductwork helps transfer air to and from the blower motor and throughout the home. The exterior unit houses a compressor and condenser coil, as well as a large fan to help dissipate heat. A pump helps to transfer refrigerant, which is a chemical that continually evaporates and condenses, between the interior and exterior units of your air conditioner.
  • Refrigerant Evaporation: Evaporation is the key point in the operation of your air conditioning system. As liquid changes to a gaseous state through evaporation, heat is absorbed from the surrounding environment. Inside the evaporator coil of your air conditioner, refrigerant is transformed from a liquid to a gaseous state, drawing heat from the air in your home. The blower motor then pushes the cooled air through your home's air ducts.
  • Refrigerant Compression: The gaseous refrigerant is then transferred to the exterior unit, which houses the condenser and compression coil. The refrigerant is condensed back into a liquid state, releasing its absorbed heat into the outside air. Metal fins and a fan help transfer heat from the condenser coil. After this, the liquid refrigerant is pumped back into your home to evaporate and begin the process once more.

If you would like to learn more about the process of air conditioning or schedule a service appointment for your air conditioner, contact Blue Dot Services of Maryland at (410) 698-6465. We specialize in air conditioner repair and HVAC services. Call us or visit our website for additional information today.


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