Greater London · Air conditioning repair
Nunhead air conditioning repair
Air conditioning repair in Nunhead from an F-Gas certified company, with the manufacturer’s warranty terms explained on your quote. Enquiries answered the same working day.
- New noises from the system
- A unit that barely blows any air
- A system that needs topping up again
What air conditioning repair can’t fix
Air conditioning repair cannot fix everything, and we will tell you before any work starts. It will not put right:
- A system that was undersized for the room in the first place (that needs a bigger system, not a repair)
- A supply fault outside the property
- A discontinued model with no parts available
If in doubt, phone us on 07833 053749 or use the quote form and we will say what we think.
Where we work
- VRF systems
- Multi-split systems
- Ducted systems
- Heat pumps
- Wall-mounted split systems
- Ceiling cassettes
About our air conditioning repair in Nunhead
A diagnosis call-out is from £75 + VAT. When the cause is found, the repair is priced before anything else is done and nothing goes ahead without your say-so. If the problem is frost on the pipework and a unit that barely blows any air, we can sort it out.
London systems in Nunhead often run long hours in summer, and that is when faults show: weak cooling, water leaks, error codes or a unit that will not start. A photo of the error code and the unit’s label helps us arrive with the right parts in mind.
We’re an F-Gas certified company, NICEIC approved for electrical work, with MCS certification for heat pumps and Checkatrade membership. Our engineers hold the F-gas qualifications needed to work on refrigerant.
- Place
- Nunhead (SE15, SE4, SE14)
- Region
- Greater London
- Typical price
- £75 + VAT call-out, then a fixed repair price
- Accreditations
- F-Gas certified company, NICEIC approved
- Quote
- Fixed after a survey or pictures
- Enquiries
- Same working day
- Call
- 07833 053749
- Reviewed
- 30 October 2026
When air con fails in Nunhead
Central Nunhead is inside the Nunhead Cemetery Conservation Area. Draw a one-mile circle round the middle of Nunhead and it takes in 6 conservation areas. Listed buildings are part of the picture here: about 20 within half a mile of the centre, such as Chapel of Nunhead Cemetery (grade II). Day-to-day work on an existing system isn’t affected; a replacement outdoor unit on a protected building might be. About 47% of homes in Nunhead and the neighbourhoods around it were built before 1919, according to the Valuation Office Agency’s council tax figures, and about 62% of households live in flats, according to the 2021 Census. Balcony, roof or high wall? Knowing where a flat’s outdoor unit is helps us bring the right access kit. In London, access to outdoor units on roofs and balconies can need planning, so tell us how to reach yours.
If a system fails at a school such as Ivydale Primary School, our 24/7 line takes the call, and planned repairs can wait for the holidays. Near Nunhead station, as anywhere, a photo of the error code on the controller is the quickest way to start a repair.
Nunhead is about 1 mile south-west of New Cross, in Greater London. If you need air conditioning repair in Nunhead, please phone 07833 053749, or email if that’s easier for a fixed-price quote. Our area covers London and the South East, including Nunhead. Our list for Greater London has 764 entries and Nunhead is among them.
Not far from Nunhead, a recent job of ours was on Loampit Vale, Lewisham (SE13), about 2 miles east: installing four Daikin cassette units in the main working area and a wall-mounted unit in the private event space.
If your postcode is in SE15, SE4 and SE14, the property is within reach. Rye Road, Nash Road and Kitto Road and the roads off them are all inside our area. Close to Nunhead, our area also takes in Telegraph Hill (1 mile north-east), Honor Oak (1 mile south), Peckham (1 mile north-west), New Cross (1 mile north-east) and Brockley (1 mile south-east). Within a short drive, we also cover London (3 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west) and Kensington (7 miles west).
What’s near Nunhead
In Nunhead, that means homes and buildings near The Ivy House, Peckham Rye and Allenby Tutorial Trust, among other places. There’s a railway station in Nunhead itself: Nunhead station. Nearby you will also find Greenwich Castle (2.4 miles north-east) and Lewisham Shopping Centre (1.7 miles east). Green spaces nearby include Knight's Hill and One Tree Hill.
What owners can safely do
Leave the units and pipework where they are. Moving a unit involves the refrigerant circuit, so it needs an F-Gas qualified engineer, and the electrics need care too. Ask us to quote for a move instead.
Some faults have simple causes you can check first: check the mode, the set temperature, the remote’s batteries and the breaker. If a breaker trips again after you reset it, leave it off and call us on 07833 053749 or email us.
The process
Testing is the last part of the visit wherever the system can be switched on. Then we explain what was done and answer your questions, and anything that needs attention later is pointed out. The visit takes an hour or two to diagnose most faults, with the repair time depending on what we find. Photos of the room and where the outdoor unit could go let us plan most of a visit to Nunhead in advance.
- First, a few questions by phone or email about the brand, the fault and anything shown on the controller.
- The engineer reads the fault codes and checks the electrics, airflow, drain and refrigerant circuit.
- You get a plain explanation of the fault and a fixed price for putting it right.
- We repair the fault, and where refrigerant is involved, the leak is found and fixed before recharging.
- Before leaving, we run it through its modes and write up what was found and done.
Before we arrive
- Make sure someone can let us in at the agreed time
- Keep pets and children away from the work area
- Let us know if the building has a permit or sign-in process
Ask for a quote
Every quote starts with a look at the job, either on a site survey or, for simple jobs, from your pictures and details. Then you get a fixed price so you know the cost before we begin.
Read more
Keeping the system healthy
Think of this as the after-treatment advice, short and simple:
- Have the system serviced once a year
- Do not keep resetting a breaker that trips
- Leave space around the outdoor unit
If parts are needed, we tell you what’s on order and book the return visit with you. Parts lead times depend on the supplier, so we keep you posted.
Book an annual service. A service cleans the coils and drain, checks the electrics and the refrigerant circuit and catches small faults early and that’s usually simpler than a breakdown repair.
Common questions in Nunhead
Who do I call if my air conditioning fails in Nunhead out of hours?
Nunhead is within our area, and the emergency line is open 24/7. Tell us the make, model and any error code when you call; repair call-outs start from £75 + VAT.
Is Nunhead in your area for air conditioning repair?
Yes. Nunhead is one of the places we cover. Just call 07833 053749 or use the quote form with a few details.
Do you provide F-Gas records?
Yes. It’s the record a manufacturer or the next engineer will ask to see: the date, the work, and any refrigerant added or recovered.
My system uses R410A. Can it still be repaired?
Yes. We find and fix the leak, then recharge with R410A and record it in the F-Gas records, and we tell you honestly whether a repair is worth it on an older system.
Which brands do you work with?
Mitsubishi Electric, Daikin, Fujitsu, Panasonic, Toshiba, LG, Samsung, Mitsubishi Heavy Industries, Hitachi and others. For a new system, we suggest the make and model that suit the property and explain why.
How much does an air conditioning repair cost?
The first step is a diagnosis, from £75 + VAT, and then you get a fixed price for the repair. Nothing goes ahead without your agreement.
Will you work on another installer’s system?
Yes. We look at it first and tell you what we find, including any issues with how it was fitted. Any work is priced before it goes ahead.
Nearby places to Nunhead
Other services in Nunhead
What a customer said
“Very professional from the initial survey through to installation. The engineer explained everything clearly and the quote was exactly what we paid. Would not hesitate to recommend AirCon Doctor.”
David W., Haywards Heath