Greater London · Air conditioning installation
Keston air conditioning
Our engineers work in Keston on air conditioning installation. A look at the job first, a fixed-price quote and written records at the end.
- A home office that warms up with screens and equipment
- Not knowing which system, size or brand to choose
- A loft room or top floor that bakes in summer
How we handle air conditioning in Keston
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. Modern air conditioning heats as well as cools: in heating mode they work as an air-to-air heat pump, which is why many owners use theirs all year.
London homes in Keston can be short of outside space, so the outdoor unit may end up on a rear wall, a flat roof or a balcony. Neighbours’ windows and noise matter as much as appearance when we choose the position, and we plan the pipe route so it’s as short and tidy as the building allows.
Refrigerant work is written up in the F-Gas records: what was done, the refrigerant type and any amount added or recovered. Keep the records with the manual and the warranty documents, as a manufacturer or a future engineer may ask to see them.
- Where
- Keston (BR2)
- Region
- Greater London
- Price
- A fixed-price quote up front
- Guide price
- Single room from £1,200 + VAT
- Approvals
- F-Gas certified company, NICEIC approved
- Enquiries
- On the working day you ask
- Telephone
- 07833 053749
- Checked
- 30 October 2026
Keston: your questions answered
Can I have air conditioning in a flat in Keston?
In many cases, yes, once the lease and the building’s rules are checked. Permitted development rules for flats are tighter than for houses, so we check the outdoor unit position and give you the details to send to the freeholder or managing agent.
Can I fit air conditioning in Keston without planning permission?
It depends on the property. The Keston Village Conservation Area takes in the middle of Keston. 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 is not allowed under those rules. If there’s any doubt, we ask Bromley council, which is usually the planning authority for Keston.
Will I get records for the system?
Yes. It’s the record a manufacturer or the next engineer will ask to see: a dated note of the work, with refrigerant details where they apply.
How does the warranty work?
Warranty is the manufacturer’s own, on its terms. Each brand sets its own conditions and periods, so we explain them on your quote.
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, so we point out anything that may need permission on the survey. This is general information, not legal advice.
Do you work on commercial properties?
Yes. From one rented home to commercial buildings, the approach is the same: survey or diagnosis, a fixed price and proper paperwork.
Should I choose wall-mounted, ducted or cassette?
The right one depends on how many rooms you want to cool, how much space there is outside and how visible you want the indoor units to be. Ducted systems need a ceiling void or loft, and cassettes need a suspended ceiling and the survey confirms what’s possible.
What happens on the day
Testing is the last part of the visit wherever the system can be switched on. Then we show you what we have done and answer any questions, and anything that needs attention later is pointed out. All told, the work takes about a day for a single-room system, longer for multi-room and ducted systems. Parking bays, permits and roof or balcony access are the first things we ask about in Keston.
- Diagnosis comes first, with a survey of the rooms, outside space and fuse board.
- Then the prescription: the right system and size for each room, on a fixed-price quote.
- Then the work: units up, pipes and drain run, and a new circuit where necessary.
- Before it runs, the pipework is proved tight and put under vacuum.
- Finally, the clean bill of health: commissioning, the controls explained and your paperwork handed over.
Before we arrive
- Make sure we can reach the outdoor unit, or where it will go
- Clear the space around the indoor unit, or where it will go
- Plan for pets to be kept clear during the visit
Getting a price
Our prices page gives typical ranges, but your quote is based on your job, because no two buildings, rooms or systems are the same. After a look at the job, by pictures or a survey, the price is fixed. To start, phone us on 07833 053749 or send an email.
Advice
Towns and villages near Keston
What else we do in Keston
What happens if it’s left?
Size matters more than brand. An undersized unit runs hard and still cannot keep the room cool; an oversized one cycles on and off and wastes energy. Getting the sizing right at the survey stage avoids both problems. Planning ahead in Keston means you choose the date, not the weather.
Leaving a fault or an overdue service rarely makes the work cheaper. Small problems, from blocked filters to slow leaks, tend to get worse, and a system working harder than it should costs more to run. If you’re unsure, phone us on 07833 053749 or use the quote form and we will give you an honest view and a fixed price.
Why us?
- Enquiries answered the same working day
- Every job looked at before it’s priced
- NICEIC approved for electrical work
- Listed on Checkatrade
Take a look at our cost guide and how to check a contractor.
Managing agents and facilities teams in Keston
Landlords, letting agents and managing agents book us, not only the people who live or work in the property. Tell us who the contact on site is and who should receive the paperwork, and we’ll keep everyone informed.
Under the GB F-gas rules, responsibility for leak checks is shared between whoever operates the equipment and the engineers who work on it. In a let or managed building, it’s worth agreeing who that operator is, and we can work for either side.
What air conditioning will not do
Air conditioning cannot fix everything, and we’d rather say so up front. It doesn’t solve:
- Stuffy rooms that need fresh air rather than cooling
- A building fabric problem such as single glazing or no loft insulation
- 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)
Not sure which it is? You can phone us on 07833 053749 or fill in the contact form and we will tell you honestly before booking.
What the work covers
- Ducted systems
- Air-to-air heat pumps
- Wall-mounted split systems
- Ceiling cassettes
- Multi-split systems
- VRF systems
Homes in Keston and air conditioning
VOA council tax data show about 31% of homes in Keston and the neighbourhoods around it date from 1919 to 1939, and about 79% of households live in detached or semi-detached houses, according to Census 2021 figures. We check the wall construction on homes of that age, as it decides how the pipework goes through. Houses typically have a side or rear wall with room for the outdoor unit, and a multi-split can serve several rooms from one outdoor unit. For a London home, we plan the outdoor unit position, the pipe route and any approvals before the day.
Down House (roughly 2.2 miles south-east) shows the area has its share of heritage. A listed home needs consent before an outdoor unit or pipework goes on. Around Keston Parish Church, a quick check of the listing and conservation maps is part of planning any install.
Keston is about 3 miles south of Bromley, in Greater London. Whatever kind of property you have in Keston, we can help with air conditioning. You’ll hear back from us the same working day, and there’s a 24/7 emergency line. Keston is one of 764 places in Greater London where we work for homes and businesses.
Not far from Keston, a recent job of ours was on Westmoreland Road, Bromley (BR2), about 3 miles north: installing a Mitsubishi Electric multi-split system serving the master bedroom, second bedroom and living room. Read more
We work across BR2 for air conditioning. Whether you’re on Church Road, Greys Park Close and Heathfield Road or a nearby road, our engineers can take on the work. Close to Keston, our area also takes in Nash (1 mile west), Farthing Street (1 mile south-east), Locksbottom (1 mile north-east), Leaves Green (2 miles south) and Hayes (2 miles north-west). We also work in nearby towns such as London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west) and Kensington (14 miles north-west).
What’s near Keston
Typical jobs here are in properties near South Park, Ravens Wood School and The Greyhound pub and the streets around them. For rail, the closest station is Hayes (Kent) station, about 1.5 miles north-west. A little further out are Princess Royal University Hospital (1.1 miles east) and Bethlem Museum of the Mind (1.5 miles north). Open spaces near Keston include West Kent Golf Course nature reserve and Summer Hill.
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