Greater London · Air conditioning installation
Air con installers in Eltham
We cover Eltham for air conditioning installation. Diagnosis first, a fixed price and proper paperwork when we finish.
- A loft room or top floor that bakes in summer
- Rooms heated by plug-in heaters
- Bedrooms and offices that overheat in summer
Pricing air conditioning in Eltham
Typical ranges are on our prices page, and your quote is built on your job. The quote depends on:
- What we find on the survey or diagnosis
- Whether the existing supply is suitable
- Whether it’s a one-off job or part of a maintenance contract
The cost depends on the type of system and how many units are involved, how easy the units are to reach and what the work involves. We give you a fixed price before any work starts, so you know where you stand.
What to send for a quote
To speed up the quote, please include:
- Any error code or flashing light on the display
- Where the property is and what kind of building it is
- Photos showing the indoor unit and the space around it
For a fixed-price quote, call us on 07833 053749 or send an email and tell us about the property and what you need. A few photos make it quicker. You will hear back from us the same working day.
How we handle air conditioning in Eltham
Wall-mounted, multi-split, ducted and cassette systems are all part of what we install, plus VRF systems for bigger commercial buildings. Which one suits you depends on the space, the building and how much of the unit you want to see, and we explain the options on the survey. Every installation in Eltham begins with a look at the rooms, the walls and where the outdoor unit can go, then a fixed-price quote that names the make and model.
The outdoor unit position is the biggest single decision: we balance airflow, noise, the pipe run and access for future servicing.
Across London, and in Eltham too, a lot of air conditioning goes into flats and terraces rather than detached houses. That shapes the job: where the outdoor unit can go, how the pipework reaches it and who needs to agree first. A freeholder or managing agent often has a say in a flat, so we write up the proposed positions for them to see.
Aftercare is simple, and most of it is in the manual: clear space around the outdoor unit, the cleaning the manual describes and a service at the recommended interval. It also keeps you on the right side of any warranty terms that ask for servicing.
- Location
- Eltham (SE9, SE12, DA15, BR7)
- Wider area
- Greater London
- Typical price
- £1,200–£2,200 + VAT for one room
- Accreditations
- NICEIC approved, F-Gas certified
- Enquiries
- Same working day
- Price
- Fixed, in writing
- Phone
- 07833 053749
- Reviewed
- 30 October 2026
Safe owner checks
For air conditioning, cleaning the indoor unit’s filters is the main job owners can do where the manufacturer’s manual explains how. They come out, get a gentle clean and go back only when they’re dry. On a heat pump, the equivalent is keeping the outdoor unit clear and checking the controls.
Refrigerant is off limits for anyone without the right qualifications. Under the F-gas rules, engineers need their own qualifications and the company must be certified, and refrigerant lines can cause cold burns. If you suspect a leak, switch the system off and call us.
Eltham questions
Do you cover Eltham for air conditioning?
Yes. Eltham is one of the places we cover. To start, give us a ring on 07833 053749 or email us with a few photos.
Do I need permission to put air conditioning in my flat in Eltham?
In many cases, yes, once the lease and the building’s rules are checked. We look at where the outdoor unit could go, such as a balcony, flat roof or rear wall, and write it up for the freeholder or agent.
Do you work on commercial properties?
Yes. From a single let flat to offices, shops and public buildings, the approach is the same: a look first, a fixed-price quote and written records.
Is air conditioning possible in a flat?
That depends on the lease, the building and where the outdoor unit could go. Balconies, flat roofs and rear walls can all work, subject to consent, and we check the options on the survey. This is general information, not legal advice.
How long does it take to fit air conditioning?
A single-room system is usually fitted in a day. Multi-room and ducted systems take longer, depending on the pipe routes and access, and we tell you how long on the quote.
Do I need a new electrical circuit?
Typically, yes. The fuse board is checked on the survey, and any electrical work goes on the quote and we install and certify the circuit as NICEIC approved contractors.
What size air conditioning unit do I need?
It depends on the room, not only its floor area. Windows, the direction the room faces, the roof above and the people and equipment in it all count and the survey covers each of them.
What air conditioning cannot fix
Not every problem is solved by air conditioning, and we will tell you before we start. It will not put right:
- Damp or condensation caused by leaks or poor ventilation in the building (that needs the cause fixing)
- A room that cannot take an outdoor unit or pipe route without the landlord’s, management company’s or council’s consent (that consent comes first)
- Draughts and missing insulation
If you are not sure, just give us a ring on 07833 053749 or drop us a line and we’ll give you a straight answer before booking.
What the work covers
- Air-to-air heat pumps
- Ceiling cassettes
- Wall-mounted split systems
- Ducted systems
- VRF systems
- Multi-split systems
Air conditioning in Eltham: local notes
About 40% of homes in the Eltham area date from 1945 to 1972, according to the Valuation Office Agency’s council tax figures, and about 51% of households live in flats, according to Census 2021 figures. We check the wall construction on homes of that age, as it decides how the pipework goes through. In flats, the lease and the freeholder normally decide where an outdoor unit can go, and the permitted development rules for flats are tighter. For a London home, we plan the outdoor unit position, the pipe route and any approvals before the day.
Eltham Palace (roughly 0.4 miles north-west) shows the area has its share of heritage. A listed home needs consent before an outdoor unit or pipework goes on. If you work from home near Mottingham station, a home office that overheats is one of the easiest rooms to cool.
Eltham is about 7 miles west of Dartford, in Greater London. Eltham gets the same approach as every job we take on: diagnosis first, a fixed price and proper paperwork when we have finished. Eltham is one of 764 towns, villages and districts in Greater London where we work.
Not far from Eltham, a recent job of ours was on Brownhill Road, Catford (SE6), about 3 miles west: installing a Mitsubishi Electric wall-mounted unit in the main living area. Read more
We cover homes and businesses on Eltham High Street, Tarnwood Park and Elmslie Court and the roads around them. If your postcode is in SE9, SE12, DA15 and BR7, you are inside the area we cover. Other places close to Eltham include Middle Park (1 mile west), New Eltham (1 mile south-east), Well Hall (1 mile north), Coldharbour (1 mile south) and Avery Hill (1 mile north-east). Within a short drive, we also cover London (8 miles north-west), City of Westminster (10 miles north-west), Marylebone (10 miles north-west) and Kensington (12 miles west).
Around Eltham
In Eltham, that means homes and buildings near Horn Park, Eltham Church of England Primary School and The Greyhound Public House, among other places. There’s a railway station in Eltham itself: Mottingham station. Other landmarks nearby include Eltham Community Hospital (less than half a mile north) and Metropolitan Police Museum (2.1 miles east). The countryside around Eltham includes The Tarn and Summer Hill.
Places near Eltham
Other services in Eltham
The process
There’s very little for you to do on the day. Someone needs to let us in and show us the units, or where they’re going, and we take it from there. Before we leave, the area is tidied and we explain what we’ve done. Parking bays, permits and roof or balcony access are the first things we ask about in Eltham.
- First the diagnosis: a survey of the rooms, the walls, the outside and the electrics.
- Next, a recommendation for each room and a fixed price.
- Then the work: units up, pipes and drain run, and a new circuit where needed.
- Before it runs, the pipework is proved tight and put under vacuum.
- The sign-off: commissioning, a walk through the controls, and the F-Gas records and warranty details.
Before we arrive
- Tell us about access, such as roof hatches, high walls or locked plant areas
- Name a contact who can meet us at the agreed time
- Plan for pets to be kept clear during the visit
Get a fixed-price quote
The quickest way to a quote is to send pictures: the room or the existing unit, the outside wall or roof where the outdoor unit sits or would go, and the label on any existing unit. Tell us the address and what you need, and simple jobs can often be priced without a visit.
Advice
A customer’s words
“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