Get To Know The Main Components Of Your Car A/C


Air conditioners are like orchestras: they provide cool or hot air to a room by working together as a symphony. If everything is working smoothly, you don’t even realize that there are several components inside this reserved box, which make your air conditioner run. Upon deeper examination, you will find a maze of interconnected components. Although your air conditioner also uses hoses and ports to charge the refrigerant, these parts do the bulk of the work. Let’s get to know the main components of your car A/C below.


The compressor distributes Freon throughout the air conditioning system in a car. First, the compressor will draw in Freon, which will then be dispensed to all parts of the air conditioner under high pressure. An engine’s crankshaft drives the compressor.

Air conditioning compressors are either reciprocating or rotary. Reciprocating types include swash types and crank types. In the rotary type compressors, the trough vane is used.


Condensers for air conditioning are generally located in front of radiators, giving this mini radiator its name. Condensers are used to reduce the pressure and temperature of hot gases produced by the compressor as it compresses refrigerant. Additionally, the condenser also sends the cooled liquid refrigerant to the dryer, accumulator, or receiver.

Pressure Switch

An important component of the air conditioner is the pressure switch, which functions as a safety switch. A liquid sensor is located inside the pressure switch. Depending on the engine temperature and Freon gas pressure, it can work automatically.

Connecting the pressure switch to the compressor is also possible via a connector cable. When the air conditioner is turned on, the Freon gas pressure is adjusted to maintain optimum performance.


A compressor’s expansion valve transfers heat from the compressor to the evaporator. It is common for leakage problems to occur in this evaporator. In this case, Freon will be wasted out of the evaporator, resulting in a decrease in cabin cooling.

It may be that the evaporator in your car has a leak, but it’s certainly worth checking before you assume the air conditioner isn’t cold enough.

Expansion Valve

An expansion valve has the role to change Freon from liquid form to gas form. In addition to regulating the flow of Freon, the expansion valve is also used to control the temperature. From the filter dryer to the evaporator, there is a small channel that connects the two.

Ventilation Blower

During a car trip, the ventilation blower is used to circulate air and Freon through the car cabin. Usually, this ventilation blower can be found under the dashboard. This is the part of your car that usually gets dirty the fastest, so you need to check it. Maintain a clean ventilation blower to ensure it can blow Freon and wind effectively when necessary.


You can trust R & Y A/C Compressors to repair your car’s air conditioning system if any of the components are not working properly. Come on in and let us show you the difference our auto repair services can make for you.