Mechanical · Wimbledon SW19

Air Con Regas for Wimbledon Drivers

The A24 Morden Road out of South Wimbledon and the bus-heavy Broadway keep cars at low speed for long spells, which is where weak air con shows. Our Hackbridge workshop is about 20 minutes from Wimbledon, and a regas with vacuum and leak test takes around an hour.

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~20 min from Wimbledon
Mon–Sat 8am–8pm

Range Rover Velar in for cooling system work at KITH Cars Garage & Bodyworks, Hackbridge

Air Conditioning Regas for Wimbledon drivers

Newer cars, hybrids and the right refrigerant for Wimbledon

Wimbledon has a high share of recent cars, SUVs, hybrids and electric models, and that matters for air conditioning. Most cars built from around 2017 use R1234yf, which is more expensive than the older R134a and needs its own equipment. Hybrids and EVs often have an electric compressor that must use POE oil, because the PAG oil used in belt-driven systems can damage it. Getting both right is the first job, so we read the under-bonnet label and confirm the refrigerant, oil and price before connecting the car.

Local driving also puts the system to work. The town centre around the station and The Broadway is congested much of the day, and the A24 Morden Road towards Wimbledon Chase regularly queues at South Wimbledon. At low speed, the condenser has only its fan to cool it. A system that is even moderately low on refrigerant will lose most of its cooling in that traffic, even though it may seem perfectly adequate once you are moving freely along the A3 or across the Common.

Our process is thorough rather than quick. We recover and weigh the old refrigerant, which tells us how much has escaped, then hold the system under vacuum to boil off moisture and prove it is sealed. If it holds, we recharge by weight and test the vent temperature. If it does not, we explain the likely cause and give you a written quote. Charging by weight matters on modern systems, which hold small, precise amounts.

From the town centre, follow The Broadway to South Wimbledon, then the A24 to Morden, St Helier Avenue to the Rose Hill roundabout, and Wrythe Lane and Hackbridge Road to Soho Mills. Allow about 20 minutes, more near the Windmill or Cannizaro Park in Championships fortnight. Collection can be arranged, and repairs carry our 3-month workmanship warranty.

Mechanical

Air Conditioning Regas: what’s involved

Car air conditioning works by pumping refrigerant round a sealed circuit. The compressor, driven by the engine or, on hybrids and electric cars, an electric motor, squeezes the refrigerant into a hot, high-pressure gas. It cools and condenses in the condenser at the front of the car, then expands through a valve into the evaporator behind the dashboard, where it absorbs heat from the air blowing into the cabin.

Cars built before around 2013 almost all use R134a. Most cars from about 2017 onwards use R1234yf, which has a far lower environmental impact, and some models switched earlier. The two are not interchangeable and need different equipment. Every system loses a little refrigerant over time through seals and hoses, so cooling gradually fades. The refrigerant also carries the compressor's lubricating oil, so running low affects more than comfort.

From £49Written quote first

45–60 minutesTypical time in the workshop

3 monthsWorkmanship warranty

4.9★87 Google reviews

Signs your air conditioning needs attention

Air not as cold as it was

Gradually weaker cooling over a few summers usually means the refrigerant charge has dropped, which a regas can put right.

Only cold at speed

Cooling that is fine on the move but weak at idle can point to a low charge, a condenser fan fault or a blocked condenser.

No cold air at all

If the air is warm, the system may be nearly empty and the compressor won't engage. A fast loss like this points to a leak that should be found first.

Windows slow to demist

The air conditioning dries the air, which is why it clears a misted windscreen quickly. Weak demisting can be a sign the system isn't working.

Noise when the AC is on

A rattle, grind or squeal when the air conditioning switches on can point to a worn compressor, compressor clutch or drive belt.

Musty smell from the vents

A damp, stale smell often comes from bacteria on the evaporator or a dirty cabin filter rather than the refrigerant itself.

Compressor clutch not engaging

On belt-driven compressors, the clutch on the front should click in when you press the AC button. If it doesn't, the pressure may be too low or there is an electrical fault.

When should it be done?

Most systems benefit from a regas every two to three years, as some refrigerant escapes naturally through seals and hoses. Book sooner if you notice cooling getting weaker. If the air conditioning has stopped cooling within weeks or months of a previous regas, there is a leak, and topping it up again will only waste refrigerant. In that case we recommend a leak test with UV dye before recharging.

Every 2–3 years as general maintenance
When cooling becomes noticeably weaker
Before summer if you had weak cooling last year
After any repair that opens the system, such as a new condenser or compressor
Leak test first if cooling was lost soon after a previous regas

How we regas air conditioning

Check-in and refrigerant typeWe check the label under the bonnet to confirm whether your car uses R134a or R1234yf, and the quantity the manufacturer specifies.
Performance checkWith the engine running we check vent temperature, compressor engagement and the condenser fan, and look for obvious damage or oily leak marks.
Recover old refrigerantOur machine recovers the remaining refrigerant and weighs it, which tells us how much the system had lost. Refrigerant is never vented into the air.
Vacuum and leak testThe system is held under vacuum to boil off moisture, then monitored to see if it holds. A system that loses vacuum has a leak and needs repair before recharging.
Recharge by weightWe refill with the exact weight of refrigerant the manufacturer specifies, plus the correct compressor oil. UV dye can be added to help trace slow leaks later.
Test and verifyWe run the system and check vent temperature and pressures to confirm it is cooling properly and the compressor is cycling normally.
HandoverWe tell you how much refrigerant was recovered and whether that suggests a leak, so you know if further investigation is worthwhile.

Refrigerant and oils we use

We use the refrigerant your car was designed for, either R134a or R1234yf, and charge it by weight to the manufacturer's figure, since overfilling is as bad for performance as underfilling. The compressor oil must match too: PAG oil of the correct grade for most belt-driven compressors, and POE oil for many hybrid and electric cars with electric compressors, because the wrong oil can damage them. Replacement parts are OE or OE-equivalent.

R134a or R1234yf refrigerant, matched to your car
Compressor oil to the correct type and grade, including POE for electric compressors
UV leak detection dye where appropriate
OE or OE-equivalent condensers, compressors, valves and seals, quoted separately

How long it takes

45–60 minutes

A straightforward regas takes around 45–60 minutes including the vacuum and leak test. If a leak is found, finding and repairing it takes longer and may need parts ordering.

What’s included

Refrigerant type and system check
Recovery and weighing of old refrigerant
Vacuum and leak-down test
Recharge by weight to manufacturer specification
Compressor oil top-up
Vent temperature and performance test

Getting here from Wimbledon

From Wimbledon to our Hackbridge workshop

From Wimbledon town centre follow The Broadway (A219) east to South Wimbledon, then take the A24 Morden Road south to Morden. From Morden take St Helier Avenue (A297) to the Rose Hill roundabout, then Wrythe Lane (B278) through The Wrythe and on via Hackbridge Road (B277) into Hackbridge, joining London Road (A237) by Hackbridge station for Soho Mills.

Follow The Broadway to South Wimbledon and the A24 Morden Road to Morden, then St Helier Avenue, Wrythe Lane and Hackbridge Road to Hackbridge, around 20 minutes. Collection is available if you would rather not make the trip.

Directions from Wimbledon

About Wimbledon

Wimbledon is an affluent south-west London suburb with two distinct centres: Wimbledon Village up on the hill by the Common, with its older houses, boutiques and restaurants, and the busier town centre down Wimbledon Hill Road around the station, The Broadway and the Centre Court Shopping Centre. Housing ranges from large Victorian and Edwardian houses in the Village and around the Common to terraces and modern flats towards South Wimbledon and Raynes Park. It is world-famous for The Championships at the All England Club, which transform local traffic for a fortnight each summer. Driving means steep hills, a busy town centre, bus-heavy main roads and extensive controlled parking.

Places nearby: All England Lawn Tennis and Croquet Club, Wimbledon Common, Wimbledon Windmill, Cannizaro Park, Wimbledon Park, Centre Court Shopping Centre

Postcodes: SW19, SW20 · London Borough of Merton

More about KITH for Wimbledon drivers

Questions

Air Conditioning Regas in Wimbledon: your questions answered

Can you regas the air conditioning on my electric car?

Yes. Many EVs and hybrids use an electric compressor that needs POE oil rather than the usual PAG oil, and we use the correct type. We confirm the refrigerant and oil from the vehicle details before starting.

Why is R1234yf more expensive to regas?

The refrigerant itself costs considerably more than R134a, and it needs dedicated equipment. Systems also vary in how much they hold, so we confirm the exact price for your car when you book.

Should I avoid booking during the Championships?

It helps. Road closures around the All England Club and heavy traffic across the Village and Wimbledon Park can slow the trip. The A24 route to Morden is usually less affected, but allow extra time in that fortnight.

Which refrigerant does my car use?

Check the sticker under the bonnet, usually on the slam panel or near the radiator. As a rough guide, most cars before about 2013 use R134a and most from about 2017 use R1234yf, with some models changing in between. We always confirm before starting.

Can R134a be put in an R1234yf system, or the other way round?

No. The systems use different service connectors, different oils and are designed around different pressures and properties. Mixing or converting refrigerants isn't something a reputable garage should do.

Will a regas fix a leak?

No. A regas refills the system, but if it is leaking the charge will drop again. If cooling disappeared quickly after a previous regas, we recommend a leak test with UV dye so the leak can be found and repaired first.

Why does the price differ between cars?

R1234yf is considerably more expensive than R134a, and systems hold different amounts of refrigerant. We confirm the refrigerant type and the price before we start work.

Should I run the air conditioning in winter?

Yes. Running it for a few minutes regularly keeps oil circulating to the compressor and seals, and it dries the air so the windows demist faster. Many cars run it automatically when you select demist.

Instant quote

Price your air conditioning regas now

Enter your reg and we’ll look up your car and price the job from our own labour rates and the book time for your model. Then book it in with a fixed written quote before any work starts.

Free, about 30 seconds, no sign-up
Parts, labour and VAT included
3-month workmanship warranty
Collection from Wimbledon can be arranged

“It’s rare to find a garage you can truly trust. Fair price, brilliant customer service.”Thinushan K. · ★★★★★ Google

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