Air Con Regas & Repair | Station Motor Company

AC Servicing

Keep your cabin cool and your system healthy

Why your AC needs servicing

Your car's air conditioning system naturally loses 10–15% of its refrigerant every year through microscopic leaks in hoses and seals. This is completely normal, but it means the system gradually loses cooling performance over time.

The compressor — the most expensive component in the AC system — relies on refrigerant for its lubrication. Running a low-charge system forces the compressor to work harder without adequate lubrication, which can lead to premature failure and a repair bill of several hundred pounds.

Regular AC servicing keeps refrigerant at the correct level, protects expensive components from damage, and extends the overall life of the system.

What we offer

AC regas/recharge for both R134a and R1234yf refrigerants
Leak detection using UV dye and electronic sniffer
Compressor, condenser and evaporator repair and replacement
Antibacterial sanitiser treatment — £15
Full system diagnostics including pressure and temperature checks

Whether your AC is blowing warm, making strange noises or just not as cold as it used to be, we'll diagnose the problem and fix it. We service all makes and models at our Doncaster workshop.

Warning Signs

Signs your AC needs attention

If you notice any of these symptoms, your air conditioning system may need a regas, repair or inspection.

Not blowing cold

The most obvious sign. If your AC is blowing cool or lukewarm air instead of cold, the refrigerant level is likely low and the system needs a regas.

Weak airflow

The fan is working and you can hear it running, but the air coming through the vents is noticeably weaker than it should be. This could indicate a blocked evaporator or failing blower motor.

Bad smell from vents

A musty, damp or unpleasant odour when you switch on the AC is usually caused by bacteria and mould growing on the evaporator. An antibacterial treatment will clear it up.

Clicking or grinding noise

Unusual noises when the AC is engaged — particularly clicking, grinding or squealing — can indicate a failing compressor clutch or worn bearings that need attention.

Windows misting up

If your windows are misting up more than usual, especially with the AC on, the system may not be dehumidifying the cabin air properly — a sign it's low on refrigerant.

AC cutting out

The air conditioning works intermittently — it blows cold for a while, then cuts out and blows warm before coming back again. This often points to an electrical fault or a system that's borderline on refrigerant.

Refrigerant Types

R134a vs R1234yf — which does your car use?

R134a

R134a has been the standard automotive refrigerant for decades. Most cars built before 2017 use R134a. It's widely available and less expensive to recharge, making it the more affordable option for older vehicles.

R1234yf

R1234yf is the newer, more environmentally friendly refrigerant required by EU regulations. It has a much lower global warming potential than R134a. Most cars built from 2017 onwards use R1234yf. The refrigerant itself costs more, which makes the regas more expensive.

The two refrigerants are not interchangeable — your car must use the correct type. We service both R134a and R1234yf systems. If you're not sure which your car uses, just call us or pop in and we'll check for you.

Tips

Keep your AC in top condition

A few simple habits will help your air conditioning system last longer and work better between services.

Run it every week

Run your AC for at least 10 minutes every week, even in winter. This circulates the refrigerant oil and keeps the compressor seals lubricated, preventing them from drying out and leaking.

Regas every 2 years

Don't wait until the system stops blowing cold. A preventative regas every two years keeps the refrigerant at the correct level. The compressor oil is also renewed during a regas, keeping the system properly lubricated and reducing the risk of expensive compressor failure.

Use recirculation in traffic

Switch to recirculation mode when you're stuck in traffic. It cools the already-cool cabin air rather than pulling in hot air from outside, reducing the load on the system and cooling the cabin faster.

Don't blast it on max

Avoid setting the AC to maximum cold straight away on a hot day. Open the windows for a minute first to let the hot air escape, then close them and turn on the AC. This reduces the initial strain on the system.

FAQ

Air conditioning — your questions answered

How often should I regas my AC?

We recommend every 2 years. Your car's AC system naturally loses 10–15% of its refrigerant each year, so after two years the level can be low enough to affect cooling and put extra strain on the compressor. The compressor oil is also renewed during a regas, which keeps the system properly lubricated.

How much does a regas cost?

The cost depends on which refrigerant your car uses. R134a systems are less expensive to recharge than R1234yf systems, as the newer refrigerant costs more. Call us on 01302 866 458 for a current quote — we'll confirm the price before any work begins.

Why does my AC smell bad?

A musty or unpleasant smell when you turn on the AC is usually caused by bacteria and mould building up on the evaporator core inside the dashboard. We can treat this with an antibacterial sanitiser that kills the bacteria and eliminates the odour.

What's the difference between R134a and R1234yf?

R134a is the older refrigerant found in most pre-2017 vehicles. R1234yf is the newer, more environmentally friendly replacement used in most cars from 2017 onwards. They are not interchangeable — your car must use the correct type. R1234yf costs more due to higher manufacturing costs. If you're unsure which your car uses, we can check for you.

Can you fix an AC leak?

Yes. We use UV dye and electronic leak detection equipment to pinpoint the exact source of the leak. Once found, we repair or replace the faulty component — whether it's a pipe, O-ring, condenser or compressor seal — then regas the system and retest.

Air Conditioning Regas & Repair