AC Condensers

A/C Condensers In a semi-truck or any vehicle equipped with air conditioning (AC), the AC condensers play a crucial role in the overall functioning of the air conditioning system. The main purpose of the AC condenser is to release heat from the refrigerant that has been absorbed from the cabin of the vehicle.

Here’s how the A/C condenser works in a typical air conditioning system:

Heat Removal

The AC system works on the principle of refrigeration, where a refrigerant circulates through various components to absorb and release heat. AC condensers are located in front of the vehicle’s radiator. As the hot, pressurized refrigerant from the compressor flows through the condenser coils, air from the outside passes over the coils, helping to dissipate the heat from the refrigerant.

Cooling the Refrigerant

As the hot refrigerant flows through the condenser coils, the heat is transferred to the surrounding air. This causes the refrigerant to lose its heat and transform from a high-pressure gas to a high-pressure liquid.


The process of turning the refrigerant from a gas to a liquid is called condensation. The AC condenser facilitates this phase change by providing a surface for the heat exchange to occur.

Pressure Reduction

AC Condensers

After passing through the condenser, the refrigerant is in a high-pressure liquid state. It then goes through an expansion valve or orifice tube, where its pressure is reduced. This allows the refrigerant to evaporate and absorb heat when it enters the evaporator located inside the vehicle’s cabin.

Cooling the Cabin

The now cooled and expanded refrigerant circulates through the evaporator, absorbing heat from the cabin air. The blower fan then blows this cooled air into the cabin, providing a comfortable temperature for the occupants.

In summary, the AC condenser is a critical component in the air conditioning system of a semi-truck. It plays a key role in releasing heat from the refrigerant, allowing the system to cool the air inside the vehicle’s cabin. Finally, order your Freightliner condenser today! Contact us today if you have any questions.


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