Greater London · Air conditioning repair
Air Conditioning Repair in St Johns
For fault finding and repair for split, multi-split, ducted, cassette and VRF air conditioning, whatever the brand in St Johns, one call is all it takes, from the first look to sign-off. An F-Gas certified company, NICEIC approved, on Checkatrade.
- Air conditioning running but not cooling
- Rattling, buzzing or grinding noises
- A unit that will not start
About our air conditioning repair in St Johns
Not sure whether it’s worth calling an engineer? A quick check of the filter, settings and remote can rule out the simple causes, and if that doesn’t fix it, ring 07833 053749 or write to us at info@aircondoctor.co.uk. We reply to enquiries the same working day. Typical jobs include a unit that has lost refrigerant and water dripping from the indoor unit, across wall-mounted split systems, ducted systems and heat pumps.
Air conditioning repairs in St Johns are often in flats, offices and shops, where the outdoor unit may be on a balcony, a rear wall or the roof. Knowing where the outdoor unit sits, and how to get to it, helps us plan the repair.
We are an F-Gas certified company, NICEIC approved for electrical work, with MCS certification for heat pumps and Checkatrade membership. Refrigerant work is done by engineers who hold the F-gas qualifications the law requires.
- Location
- St Johns (SE13, SE10, SE8)
- Wider area
- Greater London
- Prices
- £75 + VAT call-out, then a fixed repair price
- Replies
- On the working day you ask
- Quotes
- Fixed, in writing
- Credentials
- F-Gas certified company, NICEIC approved
- Telephone
- 07833 053749
- Page updated
- 30 October 2026
After we’ve gone
Looking after it is simple, and it makes the next visit easier:
- Ask for the leak to be found, not just a top-up
- Turn it off and let ice clear before the visit
- Keep to the service interval the manufacturer recommends
You get a note of the fault and what we did: the cause, the parts fitted and any refrigerant added or recovered. Any refrigerant work is recorded in the F-Gas records and it belongs with the system’s paperwork.
Have the system serviced once a year. A service cleans the coils and drain, checks the electrics and the refrigerant circuit and catches small faults early, which is far simpler than an emergency repair.
When to call us in St Johns
Water dripping from an indoor unit is typically about the condensate. The drain may be blocked or kinked, the condensate pump may have failed, or the unit may not be level, and ice on the coil that melts can drip too.
Reasons to give us a call include:
- A unit that has lost refrigerant
- Frost on the pipework
- A fault code on the display
When cooling fails at a school like Ashmead Primary School, we can time non-urgent repair work around lessons.
What to look for in a quote
- How extra work would be agreed if they find something unexpected
- Whether the price is fixed or an estimate
- Which brand and model they’re proposing, and why
Also in St Johns
Air conditioning repair around St Johns
The middle of St Johns is part of the Brookmill Road Conservation Area. In the mile around St Johns’s centre, 13 conservation areas have been designated. About 40 listed entries lie within half a mile of central St Johns, Catherine House (grade II) among them. For most visits that makes no difference. It only comes up when an outdoor unit has to be replaced on a protected building. Valuation Office Agency council tax records put about 36% of homes in St Johns and the neighbourhoods around it before 1919, and about 72% of households live in flats, according to the 2021 Census. In flats, outdoor units are often on balconies, roofs or high walls, so tell us how we reach yours. London repairs often depend on reaching the outdoor unit, so access details help us plan.
For a home or office near St Johns station, tell us the make, model and error code when you call, so we can plan the repair.
St Johns is about 4 miles south-east of London, in Greater London. Homes and businesses alike in St Johns, we can help with air conditioning repair. We reply to enquiries the same working day, and there’s a 24/7 emergency line. In Greater London alone we list 764 places, and St Johns is one.
The closest recent job we can point to from St Johns was on Loampit Vale, Lewisham (SE13), about 1 mile south-east: installing four Daikin cassette units in the main working area and a wall-mounted unit in the private event space.
Avon Road, Mill Lane and Clare Road and the roads off them are all inside our area. Postcode districts we cover here: SE13, SE10 and SE8. We also cover New Cross (1 mile west), Deptford (1 mile north), Lewisham (1 mile south-east), Telegraph Hill (1 mile west) and Ladywell (1 mile south). Further out, we also cover London (4 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west) and Kensington (8 miles west).
Landmarks near St Johns
Typical jobs here are in properties near Wickham Arms, Brookmill Park and Addey and Stanhope School and the streets around them. Other local landmarks include St. Paul's (0.7 miles north) and Laban Centre (0.8 miles north). There’s a railway station in St Johns itself: St Johns station. A little further out are Fan Museum (0.9 miles north-east) and Lewisham Shopping Centre (0.7 miles south-east). The countryside around St Johns includes Brookmill Road Local Nature Reserve and Tower Hill.
Your questions about air conditioning repair in St Johns
Can I get a fixed-price quote for air conditioning repair in St Johns?
Use the quote form, or email, with a description of the job. Where pictures aren’t enough, a survey comes first and the fixed-price quote follows.
Who do I call if my air conditioning fails in St Johns out of hours?
Yes: ring the emergency line, day or night, from anywhere in St Johns. A diagnosis call-out starts from £75 + VAT, and knowing the brand and the symptoms helps us plan it.
My system uses R410A. Can it still be repaired?
Yes, repairs and recharges on existing R410A systems remain legal. As the GB phase-down continues, R410A is getting harder and dearer to buy, so for older systems we compare the cost of a repair with a replacement.
Why is not my air con cooling?
It can be anything from a dirty filter to a refrigerant leak. We read any fault code and test the system to find which, then give you a fixed price to fix it.
Do I get paperwork after the visit?
Yes, always. A new system comes with commissioning details, F-Gas records and the manufacturer’s warranty information, while repairs and services get a written note of what was found and done.
Do you work for landlords and businesses?
Yes. We work for homeowners, landlords, letting and managing agents, and businesses of every size in St Johns and across Greater London. Let us know who the records should go to.
Why is my air conditioning showing a fault code?
Each manufacturer uses its own codes, and one code can have more than one cause. Tell us the code, the make and the model, and we’ll diagnose the fault on site.
The process
We book the visit for a day and time that suit you, and we keep you posted if anything changes. When we arrive, we check the job against the survey or the photos you sent. If something is different, we talk it through with you before carrying on. From there, the work takes an hour or two to diagnose most faults, with the repair time depending on what we find. A note on parking and access helps us plan a visit to St Johns.
- Describe the problem and the brand, and mention any code on the display.
- On the diagnosis visit, we test the electrics, airflow, drain and refrigerant.
- The fault is explained simply and the repair priced up front.
- Once agreed, the repair goes ahead.
- We test the system in operation and leave you a note of the fault and the fix.
Before we arrive
- Make sure someone can let us in at the agreed time
- Clear access to the fuse board
- Have the make and model of any existing unit to hand
Ask for a quote
To help us quote: where the property is and what kind of building it is, a few photos, the make and model of any existing system and anything you’ve noticed, such as an error code or a noise. Then give us a ring on 07833 053749, or email if that’s easier.
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Managing agents and facilities teams in St Johns
We also work for facilities teams in offices, schools and public buildings across Greater London. Larger buildings can be done in stages around the people who use them.
Under the GB F-gas rules, responsibility for leak checks is shared between whoever operates the equipment and the engineers who work on it. Where a building is let or managed, the lease or contract should make clear who looks after the system and we’re happy to deal with whoever it is.
What a customer said
“Excellent service from start to finish. Two wall-mounted units installed in our home. Clean, tidy work: they protected all the floors and left no mess. The systems work brilliantly. Would highly recommend.”
Sarah M., East Grinstead