Car Air Conditioning Service & Repair in Sunbury-on-Thames
If your air con is blowing warm, it’s usually low on refrigerant — which means there’s a leak — or a component has failed. We diagnose the fault rather than simply regassing and hoping.
We work with both R134a and R1234yf refrigerants, covering older and newer vehicles, and hybrid and EV systems.
Common signs
Symptoms worth checking
- Air con blowing warm
- Weak airflow
- Musty smells
- Noise when air con engages
- Windows slow to demist
R134a and R1234yf
Older vehicles typically use R134a. Most newer vehicles use R1234yf, which has a lower environmental impact. The refrigerant type is usually shown on a label under the bonnet.
Systems lose refrigerant through leaks at seals, condensers and pipes. Hybrid and EV systems use electric compressors and specific oils.
What we check
- Refrigerant type and quantity
- Leak detection
- Compressor and clutch operation
- Condenser fans
- Cabin filter
What we can do
- Air con service and regas
- Leak finding and repair
- Compressor and component replacement
- Hybrid and EV air conditioning
How it works
The process
- 01
Check system and pressures.
- 02
Identify leaks or faults.
- 03
Repair and recharge.
- 04
Verify vent temperatures.
Why The Factory
Main-dealer capability, independent service
A Master Technician-led workshop with seven mechanical ramps, a dedicated MOT ramp and dealer-level diagnostics. Faults are shown to you and additional work is quoted before it goes ahead.
We stand behind the work we carry out. Parts and workmanship are covered in accordance with your statutory rights and any applicable manufacturer or supplier warranty. Please ask us for details relevant to your repair.
- R134a and R1234yf equipment
- Qualified high-voltage technicians for electric compressors
Free local collection & return
Available by arrangement within approximately five miles of our Sunbury-on-Thames workshop. Further afield? Just ask us.
FAQs
Air Conditioning: your questions answered
Why is my air conditioning blowing warm air?
Low refrigerant from a leak, a compressor fault, a fan issue or an electrical problem.
What is the difference between R134a and R1234yf?
They are different refrigerants. R1234yf is used in most newer vehicles and has a lower environmental impact.
How do I know which refrigerant my car uses?
Look for a label under the bonnet, or send us the registration and we’ll check.
Why can an air-conditioning system lose refrigerant?
Leaks at seals, pipes, the condenser or the compressor.
Can you diagnose air-conditioning faults as well as regas the system?
Yes. We diagnose the cause rather than just recharging.
Can you work on hybrid and EV air-conditioning systems?
Yes. Our team is qualified to work on high-voltage systems including electric compressors.
Related services
EV Servicing & Repairs
Electric vehicle servicing, diagnostics and repair.
Hybrid Servicing & Repairs
Hybrid servicing and repair by qualified high-voltage technicians.
Auto Electrical Repairs
Wiring, sensor, module and battery drain faults traced and fixed.
Need help with air conditioning?
Send your registration and a quick description on WhatsApp, or call the workshop.
The Factory, Harris Way, Sunbury-on-Thames TW16 7EL