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Stay Cool with Our Professional A/C Regas and Repair Solutions

How does it work?

When it comes to car air conditioning, most people take it for granted. After all, a car’s air conditioner should just work, right? Unfortunately, that isn’t always the case. It’s important to understand the basics of how car air conditioning works so that you can make sure you keep your vehicle running smoothly.

Without your air conditioner, driving in warmer climates like Australia will become an unbearable experience for the common driver.

For your car’s air conditioning to work properly, there are three main parts to the system.

  1. Compressor

  2. Condenser

  3. Evaporator

Your vehicle’s AC system is powered by refrigerant gas and uses a compressor to cool the air in the cabin.

The compressor is connected to an evaporator which cools the air as it passes through. The cooled air is then sent through vents in your car cabin. When you turn off your car’s engine, the refrigerant gas stops flowing and your car will warm up again quickly.

There are also a few other intricate parts to keep the system running smoothly such as the receiver and thermal expansion valve.

All car air conditioning systems are fully closed loops. In one full loop, it changes the state of matter 3 times with a high-pressure side and a low-pressure side.

a. Compressor

The compressor is a pump driven by a belt attached to the engine’s crankshaft. The refrigerant is drawn into the compressor as a low-pressure gaseous form.

Once the gas is in the pump it is put under extreme pressure (250psi-400psi) and is forced out to the condenser. Compressors cannot compress liquids, only gasses.

b. Condenser

The condenser is basically a radiator, and it serves a similar purpose to the one in your vehicle, to draw heat out of the system. The refrigerant enters the condenser as a high-pressure gas from the compressor.

The process of pressurizing the gas and moving it to the condenser creates heat, but air flowing through the fins and tubes of the condenser cools the refrigerant down (condenses) changing the state of the gas to a high-pressure liquid.

c. Receiver-Dryer

The refrigerant needs to be prepped for the evaporator. As it moves out of the condenser, the liquid goes through a little reservoir installed in the line. This receiver-drier contains desiccants and small granules that attract moisture.

The High-Pressure Side

a. Thermal Expansion Valve

The high-pressure liquid refrigerant flows from the receiver-dryer through the expansion valve, where it is allowed to expand. This expansion reduces the pressure on the refrigerant, so it can move into the evaporator.

The valve senses pressure and regulates the flow of refrigerant, which allows the system to operate steadily, but the moving parts of the valve can wear out and sometimes require replacement.

b. Evaporator

While all the other parts of the system are located in the engine compartment, the evaporator is in the cabin, usually above the footwell on the passenger side. The evaporator looks similar to a radiator, with its coil of tubes and fins, but its job is to absorb heat rather than dissipate it.

The gas moves out of the evaporator and out of the passenger compartment of the car, taking the heat with it. A fan blowing over the outside of the evaporator coil blows cool air into the passenger compartment. The refrigerant in gas form then enters the compressor, where it is pressurized and the whole process starts all over again.

The Low-Pressure Side

Why us?

Maintaining a properly functioning car AC system is essential if you want to stay comfortable during hot weather conditions. While understanding how a car’s AC system works may seem intimidating at first glance, understanding its basics can go a long way in helping you keep your vehicle running smoothly for years to come.

If you ever experience any issues with your car’s AC system, don’t hesitate to seek help from our experienced automotive air conditioning technician who can diagnose and repair any issues quickly and efficiently.

Always get your AC serviced with our car air conditioning specialist and stay clear of car repair workshops. They will not diagnose your system properly for leaks and faulty components and will normally just sell you a quick fix (re-gas).

Nine times out of ten your refrigerant will leak and dissipate into the atmosphere in just a few short months leaving you at square one and out of pocket. Get the problem fixed right, the first time.

Car Brands we service:

  • A/C regas for Audi

  • A/C regas for BMW

  • A/C regas for Fiat

  • A/C regas for Ford

  • A/C regas for Holden

  • A/C regas for Hyundai

  • A/C regas for Honda

  • A/C regas for Jeep

  • A/C regas for Kia

  • A/C regas for Lexus

  • A/C regas for Land Rover

  • A/C regas for Mitsubishi

  • A/C regas for Mercedes

  • A/C regas for Mazda

  • A/C regas for Nissan

  • A/C regas for Peugeot

  • A/C regas for Range Rover

  • A/C regas for Renault

  • A/C regas for Smart

  • A/C regas for Subaru

  • A/C regas for Toyota

  • A/C regas for Volvo

A/C regas for VW

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51 Crystal Street

Petersham NSW 2049

Monday - Friday

7:30 AM - 5 PM

Get in touch


51 Crystal Street
Petersham NSW 2049


02 8084 6066

RTA: AU 54423

MVRL: 58668

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