910 Freeport Parkway, Suite 100 Coppell, TX 75019
+ (877) 342-5526

Model Specific Air Conditioning
1930's to 1980's Cars & Trucks
Since 1977

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Air Conditioning 101 by Classic Auto Air

Air Conditioning 101 by Classic Auto Air

Here are the basics in Air Conditioning

The air conditioning system in your car is comprised of a compressor, condenser, expansion valve, receiver/drier, and evaporator. Refrigerant (also known as Freon) is compressed in the compressor. In the condenser, gas is cooled to a liquid state and travels to the expansion valve. As the liquid refrigerant goes through the expansion valve it rapidly cools in the evaporator. A fan blows over the evaporator and cools the air that blows out your vents.

5 Easy Areas

1. Evaporator with Blower Fan:  In order to remove the heat from the air in the vehicle, the A/C evaporator allows the refrigerant to absorb the heat from the air passing over it. The blower fan moves cool air out into the car interior.

2. Compressor:  The compressor pumps and circulates the refrigerant through the system.

3. Condenser: The condenser is a heat exchanger mounted at the front of the vehicle. Heat drawn out of the interior of the car is expelled here.

4. Receiver/Drier: The drier not only dries refrigerant, it also filters the refrigerant and stores it under certain operating conditions.

5. High-Pressure Switch: A pressure switch is used to shut down the system if high or low pressure is detected, basically it acts as a safety switch.


If you would like additional information on how a Classic Auto Air system works feel free to call us (877) 342-5526. We have over 40 years of experience in Model Specific Air Conditioning 1930’s to 1980’s Cars & Trucks Domestic and European

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