Tips Sahabat

What is Car AC Freon? Its Function and How It Works

09 April 2025
Apa itu Freon AC Mobil? Ini Fungsi dan Cara Kerjanya

What is car AC freon? Do you already know it? If you don't know it yet, let's pay attention to the following review.

What Is Car AC Freon? 

Car AC freon is one of the AC components in the form of a liquid compound that helps the AC in cooling the temperature in the car cabin. There are many types of car AC freon, ranging from hydrocarbons to R12. To find out more about the types, you can check this article, yes "Types of Car AC Freon".

Functions of Car AC Freon

There are several functions of car AC freon that you need to know. The complete functions are as follows. 

1. Absorbs heat in the AC system and converts it to cold

Basically, car AC freon functions as a heat absorber in the AC system. As is known, the temperature in the car cabin tends to be hot if the AC is not turned on. When you turn on the AC, the hot air in the cabin will be absorbed by the AC component called the evaporator. Then the heat from the evaporator is converted into a cooler temperature. 

2. Increases comfort while driving

In addition, AC freon also functions to increase comfort while driving. This happens because AC freon can change the hot temperature in the car cabin to a cooler one. This condition is very much needed when driving in hot weather or in tropical areas so that the driver or passengers do not feel overheated.

Read Also: How Long Does Car AC Freon Last? Here’s the Time Frame

How Freon AC Works 

For those of you who want to know how AC freon works, this component has a complex working mechanism involving a series of thermodynamic mechanisms. The complete stages of the mechanism are as follows. 

1. Compression stage

The compression stage is the initial stage of AC freon operation. At this stage, the AC freon will be drawn by the compressor in gas form from the evaporator, which previously absorbed hot air from the cabin. Then, the condenser will compress the gas until its pressure increases and the temperature of the gas becomes hotter. 

2. Condensation stage

At this stage, the gas will be channeled to the condenser to be released into the pipes cooled by the cooling fan or outside air, causing the gas to change into a high-pressure liquid. 

3. Expansion stage

In the expansion stage, the liquid will be converted back into gas at low pressure. To change it into gas, the liquid will be channeled to the expansion valve, which functions to reduce the pressure. 

4. Evaporation stage

In the evaporation stage, the gas that has successfully had its pressure lowered will be channeled to the evaporator. This gas will absorb heat from the air coming from the cabin, and the compression to evaporation stages will repeat. This stage will continue to repeat when the car AC is turned on so that the hot temperature in the cabin can change to a cool and refreshing temperature. 

Considering its very important function, car owners should regularly check the condition of the AC freon because AC freon can run out or leak. If this happens to your car's AC, then the temperature in the car cabin will not be as desired. To keep the AC freon in optimal condition, refill the AC freon appropriately (not too little or too much). 

In addition, you also need to be wise in using the car AC. Turn off the car AC if it is not needed. Immediately replace your car's AC freon at the official Daihatsu workshop if the freon is leaking, the age of the car AC freon has reached two years of use, or the car has traveled 20,000 kilometers.

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