Surrey · Air conditioning installation
Air conditioning installation in Chelsham
Need air conditioning in Chelsham? We look at the job first, give you a fixed-price quote and do the work at a time that suits you, then sign it off with written records.
- Fans and portables that don’t keep up
- Bedrooms and offices that overheat in summer
- Expensive direct electric heating
Air conditioning for homes and businesses in Chelsham
Most air conditioning needs its own electrical supply from the consumer unit. Adding a new circuit is notifiable building work under Part P unless it’s done by a registered competent person, and as NICEIC approved contractors we can install and certify it as part of the job. Most enquiries from Chelsham start with one hot room: a bedroom, a home office or a loft conversion. That’s normally a single wall-mounted split, from £1,200 + VAT.
In a village like Chelsham, many homes are older, and some are listed. That matters, because a listed home needs consent and permitted development rules don’t apply to it.
AirCon Doctor is an F-Gas certified company and 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.
- Location
- Chelsham (CR6)
- Wider area
- Surrey
- Price
- A fixed price before any work starts
- Response
- On the working day you ask
- Accreditations
- NICEIC approved, F-Gas certified
- Typical price
- From £1,200 + VAT
- Telephone
- 07833 053749
- Updated
- 30 October 2026
Chelsham: your questions answered
Is Chelsham in your area for air conditioning?
Yes, Chelsham is within the area we cover. Get in touch with the details and we reply the same working day.
Is air conditioning in Chelsham permitted development?
There’s no single answer: the building and the outdoor unit position decide it. Around 4 listed entries sit within 0.5 miles of central Chelsham. Since 2025, an air-to-air heat pump on a house can count as permitted development if it meets the conditions and isn’t used only for cooling. Listed buildings still need consent, and in a conservation area a road-facing wall or roof isn’t allowed under those rules. If there’s any doubt, we ask Tandridge council, which is usually the planning authority for Chelsham.
Should I choose wall-mounted, ducted or cassette?
Number of rooms, space outside and how much of the unit you want to see all decide it. Ducted systems need a ceiling void or loft, and cassettes need a suspended ceiling and the survey confirms what’s possible.
How do you size the system?
It depends on the room, not only its floor area. Glazing, orientation, the roof and what goes on in the room all affect it, and we take them all into account on the survey.
What does it cost to install air conditioning?
A single-room split system is typically £1,200–£2,200 + VAT. A two-room multi-split is typically £2,800–£4,500 + VAT, and three to five rooms £4,500–£8,500 + VAT, with supply, fitting, commissioning and F-Gas documentation included. The price is fixed before any work starts.
Can I have air conditioning in a flat?
Often, yes, but there are extra steps. Leaseholders normally need consent from the landlord or management company for an outdoor unit and holes through outside walls and the lease will say. Planning rules for flats are tighter too, and we flag anything that may need permission. This is general information, not legal advice.
How long does it take to fit air conditioning?
Most single-room systems take a day. Multi-split, ducted and cassette systems take longer and the quote says how long to expect.
How the visit works
The visit has three parts, a bit like a doctor’s appointment: diagnose, treat and sign off. First comes a careful look at the system or the space, then the work itself, and finally everything is tested, recorded and explained. Most of the time goes on the middle part, and that takes a day for most single-room installations, with multi-split, ducted and cassette systems taking longer. Seeing the property in pictures first means the trip to Chelsham can be planned properly.
- You send photos, or we visit and survey the rooms and outside.
- Output, positions and price are settled before anything is booked.
- Sheets go down first, then the indoor unit and the condenser are mounted.
- Pipework, cable and drain are run, the circuit is connected and the pipework is pressure tested and evacuated.
- We commission, show you the controls and leave the F-Gas and warranty paperwork.
Preparing for the visit
- Mention any parking restrictions near the property
- Let us know if the units are on a roof, a high wall or in a locked area
- Find the manual or the paperwork for the system, if you have it
How to get a quote
Some jobs can be priced from photos, while others need a survey. Bigger systems, commercial sites and awkward pipe routes are normally surveyed on site. Either way, the quote is fixed before anything goes ahead.
Read more
What air conditioning won’t do
We’d rather tell you now than sell you work that will not help, so here are the limits:
- Heat loss through very poor insulation (a system will heat the room, but insulation is a separate job)
- Building damp that has a structural cause
- A ventilation problem rather than a temperature problem
Not sure which it is? You can ring us on 07833 053749 or email us and we’ll tell you honestly before you book.
Parts of the system we cover
- Ducted systems
- Ceiling cassettes
- Wall-mounted split systems
- Air-to-air heat pumps
- Multi-split systems
- VRF systems
Homes in Chelsham and air conditioning
Census 2021 figures found about 70% of households in detached or semi-detached houses. With homes like that, finding a sensible outdoor unit position is rarely hard, and a multi-split lets two or more rooms run off it.
With historic houses such as Addington Palace about 3 miles north, it’s a reminder that older homes nearby may be listed, which changes the planning rules. Older streets near Church of St Mary the Virgin may fall within a conservation area, so we check the planning position before choosing where the outdoor unit goes.
Chelsham is about 3 miles north-east of Caterham, in Surrey. We cover Chelsham for air conditioning and across the rest of Surrey. Chelsham is one of 395 towns, villages and districts in Surrey where we work for homes and businesses.
The closest recent job we can point to from Chelsham was on Godstone Road, Caterham (CR3), about 3 miles south-west: installing a Samsung multi-split system serving three bedrooms and a home office. See the job
Streets in the area include Chelsham Common and Chelsham Road, and we cover them all. Jobs in CR6 are looked at, quoted and booked the same way as anywhere else. Close to Chelsham, our area also takes in Farleigh (1 mile north), Warlingham (1 mile west), Hamsey Green (1 mile west), Fickleshole (1 mile north-east) and New Addington (2 miles north). Within a short drive, we also cover Epsom (10 miles west), Horley (11 miles south-west), Redhill (8 miles south-west) and Ewell (10 miles west).
Local landmarks in Chelsham
We fit and service air conditioning in homes and premises around Warlingham School, Ledgers Wood and Hare & Hounds pub, among other places. Chelsham’s nearest station is Woldingham station, about 1.9 miles south-west. A little further out are Warlingham Park Hospital (within half a mile north) and East Surrey Museum (3 miles south-west). For a walk, there’s Hutchinson's Bank and Nore Hill.
Nearby places to Chelsham
Also in Chelsham
What affects the cost of air conditioning
Every job gets its own quote. This is what makes a difference:
- How many units are involved
- What state the existing equipment is in
- Whether the existing supply is suitable
A single unit or a whole estate, the quote is built the same way: what needs doing, how we get to it and what it needs. You will have a fixed price before any work starts, and the quote sets out the VAT.
Asking for a quote
You do not need the technical terms. It helps if you can send:
- Any error code or flashing light on the display
- A few photos of the room and the wall the unit is on, or will go on
- The outdoor side of the property, including any roof or flat area
Every quote shows the VAT clearly, and the rate that applies to your job is stated. Homes, businesses and different kinds of work can be treated differently for VAT, so we confirm it in writing rather than guess. To get one, ring 07833 053749 or send an email.
What owners can safely do
There are a few things you can safely do yourself: keep the outdoor unit clear of leaves, plants and clutter, check the settings and the remote, and follow the cleaning the manual describes. Opening up the units, the electrics and the refrigerant circuit are a job for us.
Some faults have simple causes you can check first: is the system in the right mode, is the set temperature sensible, are the remote’s batteries working and has the breaker tripped. If the breaker trips a second time, leave it off and phone 07833 053749 or use the quote form.
A customer’s words
“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