Greater London · Air conditioning repair
Air conditioning repair in Harlesden, Greater London
Fault finding and repair for split, multi-split, ducted, cassette and VRF air conditioning, whatever the brand, for Harlesden and the surrounding area. Ask us for a fixed-price quote, and we will reply the same working day.
- Drips from the indoor unit
- A system that will not switch on
- A unit that has lost refrigerant
How it works
We keep the work area tidy as we go, with dust sheets down and offcuts and packaging cleared up. If we need to drill through a wall, we agree the spot with you first. The visit takes a single visit for many faults, while some repairs need a second visit once parts arrive. Send us a few phone photos and we can often price a straightforward job in Harlesden before visiting.
- Diagnosis comes first: codes, electrics, airflow, drain and refrigerant.
- Prescribe: tell you the cause and the fixed cost of the cure.
- If the repair is not worth doing, we say so and explain the options.
- Treat: carry out the repair, sealing any leak before refrigerant goes back in.
- Finally, a check that it’s working and a record of what we did.
Before we arrive
- Clear access to the fuse board
- Unlock any gate, garage or side passage we need
- Find the manual or the paperwork for the system, if you have it
Getting a price
Every quote shows the VAT clearly, and the rate that applies to your job is stated. VAT can differ between homes and businesses and between kinds of work, so we confirm it in writing rather than guess. To get one, call us on 07833 053749 or fill in the contact form.
Related advice
How we handle air conditioning repair in Harlesden
Faults on all the leading makes are part of our everyday work, from Mitsubishi Electric, Daikin and Fujitsu to Panasonic, Toshiba, LG, Samsung, Mitsubishi Heavy Industries and Hitachi. Systems fitted by other installers are fine too and the make and model help us prepare. Typical jobs include a suspected refrigerant leak and poor airflow even with clean filters, across wall-mounted split systems, VRF systems and ducted systems.
In a London area like Harlesden, a lot of the systems we repair serve flats and small offices, with outdoor units on balconies, rear walls or flat roofs. Knowing where the outdoor unit sits, and how to get to it, helps us plan the repair.
Some warranty terms depend on the system being serviced regularly by a qualified engineer. Where yours does, a regular service with us keeps that side in order, and every service is written up.
- Location
- Harlesden (NW10, W3, NW26)
- Region
- Greater London
- Prices
- Diagnosis from £75 + VAT
- Approvals
- F-Gas certified company, NICEIC approved
- Quotes
- A fixed price before any work starts
- Response
- On the working day you ask
- Telephone
- 07833 053749
- Page updated
- 30 October 2026
Do you need air conditioning repair in Harlesden?
Most indoor unit leaks come back to the condensate. The drain may be blocked or kinked, the condensate pump may have failed, or the unit may not be level, while ice that forms on the coil and then melts can also cause drips.
Look out for any of the following:
- Poor airflow even with clean filters
- A unit that will not start
- A system that runs but does not cool the room
Shops and offices around Willesden Junction station often cannot wait for cooling to come back, which is what the 24/7 line is for.
Questions to ask before you book
- If the figure could change on the day
- Whether testing, commissioning and paperwork are included
- Which brand and model they’re proposing, and why
Harlesden: your questions answered
Is there an emergency air con repair line for Harlesden?
Harlesden is within our area, and the emergency line is open 24/7. A diagnosis call-out starts from £75 + VAT, and knowing the brand and the symptoms helps us plan it.
Can you do air conditioning repair in Harlesden?
Yes. We work across London and the South East from our base in East Grinstead, and Harlesden is part of that. To start, phone us on 07833 053749 with a few pictures.
How quickly will you reply?
The same working day. Then we agree a date that works for you, with a fixed price before work starts.
Does servicing affect my warranty?
Each manufacturer decides. If servicing is in the terms, missing one could affect a claim and we will tell you what your brand asks for.
How do you keep the place clean during the work?
We start with protection: sheets over the floor and nearby furniture. Any drilling is agreed with you first, and we clear up the dust and offcuts before we leave.
What does the error code on my air conditioning mean?
Each manufacturer uses its own codes, and one code can have more than one cause. Send us a photo of the display with the make and model, and we’ll diagnose the fault on site.
Do you work for landlords and businesses?
Yes. From a single let flat to offices, shops and public buildings, we work the same way: survey or diagnosis, a fixed price and proper paperwork.
What owners can safely do
Refrigerant is off limits for anyone without the right qualifications. The law requires anyone working on equipment containing F gas to hold the right qualifications, and the company to be certified, and escaping refrigerant can cause cold burns. A suspected leak is our job, not yours.
Owner care supports servicing; it does not replace it. Simple care keeps the air moving through the system, but the refrigerant circuit, the electrics and the parts you cannot see still need an engineer at the interval the manufacturer recommends.
When air con fails in Harlesden
About 52% of homes across Harlesden and its surrounding area were built before 1919, according to VOA council tax data, and the 2021 Census found about 74% of households live in flats. Balcony, roof or high wall? Knowing where a flat’s outdoor unit is helps us bring the right access kit. London repairs often depend on reaching the outdoor unit, so access details help us plan. The centre of Harlesden lies within a conservation area. 4 conservation areas lie within a mile of central Harlesden. On the National Heritage List, around 6 entries fall within 0.5 miles of the middle of Harlesden; Church of All Souls (grade II*) is one. Day-to-day work on an existing system isn’t affected; a replacement outdoor unit on a protected building might be.
For a school like John Keble CofE Primary School, urgent repairs can be booked straight away and bigger work in the holidays.
Harlesden is about 4 miles west of City of Westminster, in Greater London. From the centre of Harlesden to the outskirts, we cover air conditioning repair, from small jobs to large ones. In Greater London alone we list 764 places and Harlesden is among them. London is in our area too, about 7 miles from Harlesden.
Not far from Harlesden, a recent job of ours was on Richmond Hill, Richmond (TW10), about 6 miles south: installing a Mitsubishi Electric Zubadan multi-split system serving four bedrooms, the study and the living room: six indoor units in total.
Work in NW10, W3 and NW26 follows the same survey, fixed-price quote and written records as everywhere else we cover. Whether you’re on Fry Road, Wood Road and Park Road or a nearby road, our engineers can take on the work. We also cover the places around Harlesden: College Park (1 mile south-east), Old Oak Common (1 mile south), Church End (1 mile north), Stonebridge (1 mile north-west) and Willesden Green (1 mile north-east). Further out, we also cover London (7 miles east), City of Westminster (4 miles east), Marylebone (5 miles east) and Kensington (3 miles south-east).
What’s near Harlesden
Typical jobs here are in properties near St Claudine's Catholic School for Girls, Royal Oak Inn and Roundwood Park. There’s a railway station in Harlesden itself: Willesden Junction station. A little further out are Central Middlesex Hospital (1 mile west) and Brent Museum and Archives (1.1 miles north-east). Open spaces near Harlesden include Castlebar Hill and The Long Water.
Towns and villages near Harlesden
Also in Harlesden
What air conditioning will not do
We’d rather tell you now than sell you work that won’t help, so here are the limits:
- A room that overheats because of the building, such as a lack of shading or ventilation (the system may need help, not a repair)
- Cooling that falls short because the system is too small
- A power cut or a fault on the incoming supply to the building (that’s for the network operator)
If in doubt, ring us on 07833 053749 or email us and we’ll say what we think before booking.
What we work on in Harlesden
- Heat pumps
- Multi-split systems
- VRF systems
- Wall-mounted split systems
- Ducted systems
- Ceiling cassettes
From one of our customers
“Office air con broke down in the July heatwave. Called at 8am, engineer was here by noon and fixed within 2 hours. Brilliant emergency response. They now hold the service contract for the whole building.”
James T., Crawley, office manager