Mobile Car Air Conditioning Perth services often involve finding refrigerant leaks before an air conditioning system can be correctly regassed. We recently attended a Hyundai in Balcatta with an air conditioning problem.
The vehicle’s A/C was not performing as it should. Before adding refrigerant, CMM Automotive inspected and tested the system. We needed to find out why the air conditioning had lost performance.
Our testing identified a leak from the low-pressure Schrader valve.
Hyundai Air Conditioning Leak in Balcatta
Refrigerant should remain sealed inside a vehicle’s air conditioning system. If the system loses refrigerant, there is usually a reason for the loss.
Adding more refrigerant without finding the leak may only provide a temporary solution.
For this Hyundai, we tested the system and traced the problem to the low-pressure service port. The Schrader valve inside the port was leaking.
This small component can cause a significant A/C problem when it fails.

What Is an A/C Schrader Valve?
A vehicle’s air conditioning system has service ports that allow technicians to connect testing and servicing equipment.
Inside these ports are small Schrader valves. They help keep the refrigerant sealed inside the system when service equipment is disconnected.
Over time, a Schrader valve can develop a leak. The internal seal may deteriorate or the valve may fail to seal correctly.
Even a small leak can gradually allow refrigerant to escape.
As the refrigerant level drops, the air conditioning may become less effective. Eventually, the system may stop producing cold air altogether.
Finding the Low-Pressure A/C Leak
Correct leak detection is an important part of air conditioning diagnosis.
In this Hyundai, testing showed that the low-pressure Schrader valve was allowing refrigerant to escape.
Finding the source of the leak meant we could address the actual problem rather than simply adding more refrigerant.
Our Mobile Car Air Conditioning Perth service includes testing for faults that can cause poor A/C performance and refrigerant loss.
Why A/C Leak Testing Matters
A vehicle that has lost refrigerant should be checked for leaks before being repeatedly regassed.
Some leaks can be very small and may take time to reduce the system’s performance. Other leaks can allow refrigerant to escape much faster.
Common leak areas can include hoses, seals, condensers and service valves. Compressors and other A/C components can also develop leaks.
Testing helps narrow down the cause.
Once we identified the leaking low-pressure Schrader valve on this Hyundai, we knew where the refrigerant was escaping.
Small A/C Parts Can Cause Big Problems
The Schrader valve is a small component compared with an A/C compressor or condenser. However, its job is still important.
If the valve does not seal correctly, the system cannot retain its refrigerant.
This Hyundai in Balcatta demonstrates why proper diagnosis matters. A relatively small leak can eventually cause the entire air conditioning system to perform poorly.
Replacing or repairing the leaking component first can help prevent the refrigerant from escaping again.
Mobile Car Air Conditioning Service in Perth
CMM Automotive provides mobile car air conditioning service in Perth for many common A/C problems.
If your vehicle is no longer blowing cold air, the system may have lost refrigerant. However, finding out why it has lost refrigerant is an important part of the repair process.
Our mobile service allows us to inspect and test many air conditioning problems at your location.
This Hyundai in Balcatta had a leaking low-pressure Schrader valve. Correct testing allowed us to identify the source of the refrigerant loss.
If your vehicle’s A/C is losing its cooling performance, CMM Automotive can test the system and investigate the cause. Finding the fault first can provide a more effective repair than simply regassing the system again.
