Diagnostics
Not sure what's wrong with your air conditioning? We'll come to you, carry out a thorough diagnosis, and give you a clear, honest assessment — no guesswork.
Why Accurate Diagnosis Matters
A car air conditioning system is made up of several interconnected components — the compressor, condenser, evaporator, expansion valve, and the refrigerant circuit that links them all. When something goes wrong, the symptoms can be similar even when the underlying cause is very different. Recharging a system that has a leak, for example, will only provide a temporary fix — the refrigerant will escape again and you'll be back to square one.
That's why we always start with a proper diagnosis before recommending any repair. It saves you money in the long run, ensures the right fix is applied first time, and means your system stays working reliably for longer.
Common Symptoms We Diagnose
Warm Air from Vents
If your AC is blowing warm or ambient air instead of cold, the refrigerant level is likely low or there may be a compressor fault.
Musty or Unpleasant Smells
Foul odours when the AC is running often indicate mould or bacteria build-up on the evaporator. A system clean and cabin filter replacement usually resolves this.
Reduced Airflow
Weak airflow can point to a blocked cabin filter, a failing blower motor, or a partially blocked evaporator coil.
Strange Noises
Rattling, grinding, or squealing when the AC is engaged often signals a worn compressor clutch or debris in the system.
AC Not Switching On
If the system fails to engage at all, the issue may be electrical — a blown fuse, faulty pressure switch, or wiring fault.
Windows Slow to Clear
Your AC plays a key role in demisting. If windows are taking longer than usual to clear, the system may not be functioning correctly.
Our Diagnostic Process
Visual Inspection
We start with a thorough visual check of all accessible AC components — hoses, pipes, the compressor, condenser, and connections — looking for obvious signs of damage, corrosion, or leaks.
Pressure & Performance Test
We connect our diagnostic equipment to measure system pressures and assess overall performance, giving us a clear picture of how the system is operating.
Nitrogen Leak Test
Where a leak is suspected, we pressurise the system with dry nitrogen and check for pressure drop. This is the most reliable method for detecting even micro-leaks.
Electronic Fault Scan
We check for any stored fault codes related to the AC system using diagnostic tools, helping identify electrical or sensor-related issues quickly.
Report & Recommendation
Once the diagnosis is complete, we explain exactly what we've found in plain language and recommend the most cost-effective course of action — no jargon, no pressure.
What's Included in Every Diagnostic Visit
- Full visual inspection of all AC components
- System pressure and performance assessment
- Nitrogen leak test where required
- Electronic fault code scan
- Clear written report of findings
- Honest recommendation with no obligation to proceed
Book a Diagnostic Today
Don't put up with a faulty AC. We'll come to you, find the problem, and tell you exactly what it will take to fix it.