Greater London · Heat pump installation
Keston air source heat pumps
For air source heat pumps in Keston, choose an F-Gas certified, NICEIC approved company. Fixed-price quotes and a 24/7 emergency line.
- Not knowing whether a grant applies
- Planning and permitted development questions
- Wanting to stop using oil, LPG or gas for heating
The process
We keep the work area tidy as we go, with sheets down and mess cleared as we go. If we need to drill through a wall, we agree the spot with you first. On site, it takes a few days for most air-to-water installations, with air-to-air systems often quicker. A few pictures of the room, the outside wall and the fuse board help us plan a job in Keston.
- It starts with a conversation about the home, the existing heating and your plans.
- The survey measures heat loss room by room and looks at radiators, hot water and the best spot for the outdoor unit.
- A fixed-price quote follows, setting out the system, any grant that applies and the VAT.
- Fitting day: the outdoor unit is placed, the indoor side connected and the controls set up.
- Commissioning, MCS certification and a handover of the controls finish the job.
Before we arrive
- Keep pets out of the rooms we’re working in
- Let us know where we can park and unload
- Clear access to the fuse board
How to get a quote
Our prices page gives typical ranges, but your quote is based on your job, because every property is different. Once we have looked at the job, from photos or on a survey, you get a fixed price. To get going, ring us on 07833 053749 or use the quote form.
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Air source heat pumps in Keston
Hot water from an air-to-water system is stored in a cylinder. If you have a combi boiler and no cylinder, the survey looks at where one could go. Air-to-air systems do not heat hot water, so you will need another way to do that. If you’re dealing with checking emitters for a heat pump and plans to switch to electric heating with a heat pump, we can help.
In a flat in Keston, the lease and the freeholder normally decide where a heat pump can go. Permitted development limits are different for flats, and we check before designing.
Refrigerant work is written up in the F-Gas records: the work carried out, the refrigerant involved and the quantities. Keep the records with the manual and the warranty documents, ready for the next service or a warranty query.
- Place
- Keston (BR2)
- Wider area
- Greater London
- Approvals
- F-Gas certified company, NICEIC approved, MCS
- Pricing
- Fixed after a survey or pictures
- Guide price
- £8,000–£16,000 (0% VAT on homes), before the grant
- Phone
- 07833 053749
- Reviewed
- 30 October 2026
Your questions about air source heat pumps in Keston
Can I have air conditioning in a flat in Keston?
Usually, yes, though leaseholders normally need the freeholder’s agreement. 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.
Is a heat pump in Keston permitted development?
That depends on the building and where the outdoor unit goes. Central Keston sits inside the Keston Village Conservation Area. The permitted development rules for heat pumps leave out listed buildings and stop outdoor units going on road-facing walls or roofs in conservation areas. Anything outside the rules needs an application, and we raise it with the planning department at Bromley council, normally the authority for Keston first.
Can I do any of the installation myself?
No, not the refrigerant side. The F-gas rules require certified companies and qualified engineers for it, and a new circuit is notifiable under Part P unless a registered electrician, such as a NICEIC approved contractor, does it.
How much time does a heat pump install need?
The work takes several days for an air-to-water system with a new cylinder, less for an air-to-air system. The survey lets us set a firm programme, and you can call us on 07833 053749 to book it.
What accreditations do you have?
F-Gas certified, NICEIC approved and MCS certified for heat pumps, and we are Checkatrade members. Our engineers also hold the individual F-gas qualifications needed to work on refrigerant.
How does the warranty work?
The manufacturer’s warranty, on the manufacturer’s terms. Each brand sets its own conditions and periods, so we explain them on your quote.
Can I get the Boiler Upgrade Scheme grant?
It depends on your home and the system. The scheme gives £7,500 for eligible air-to-water or ground source systems, and £2,500 for air-to-air only under strict conditions. We check before you commit.
What affects the quote in Keston
Typical ranges are on our prices page, but every job is priced on its own. The quote depends on:
- The equipment or parts the job needs
- How far the pipework has to run, and where
- One-off work versus a regular service cycle
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 struggling system uses more electricity to do less. If you are not sure what’s needed, call us on 07833 053749 or write to us at info@aircondoctor.co.uk for straight advice and a fixed price.
What we need to know
When you contact us, it’s useful to have:
- The postcode and whether it’s a home, flat or business
- Where the outdoor unit is, or where you’d like it
- The remote or wall controller showing any error
To get a fixed-price quote, call us on 07833 053749 or use the quote form and tell us about the property and what you need. A few pictures make it quicker. You will hear back from us the same working day.
Before you call an engineer
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.
Good habits make our visits easier, not unnecessary. Simple care keeps the air moving through the system, but the refrigerant circuit, the electrics and the parts you can’t see still need an engineer at the interval the manufacturer recommends.
Towns and villages near Keston
More services for Keston
What a heat pump looks like in Keston
The Valuation Office Agency’s council tax figures show about 31% of homes in and around Keston date from 1919 to 1939, and about 79% of households live in detached or semi-detached houses, according to the 2021 Census. Homes of that age often have cavity walls that may or may not be insulated, which the survey checks. Finding room for the outdoor unit and a cylinder is seldom a problem in homes like these. In London, outside space and the rules for flats often decide which kind of heat pump suits.
Down House, roughly 2.2 miles south-east, is a reminder to check your home’s listing status: permitted development does not cover listed buildings. Live in one of the older houses around Keston Parish Church? Expect the survey to look closely at heat loss and at the building’s planning status.
Keston is about 3 miles south of Bromley, in Greater London. Homes and businesses alike in Keston, we can help with air source heat pumps. We reply to enquiries the same working day and our emergency line runs 24/7. In Greater London alone we list 764 places, and Keston is one.
Our nearest recent job to Keston 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.
Every address in BR2 is covered, from busy streets to back roads. From Church Road, Greys Park Close and Heathfield Road to the smaller roads in between, nowhere is left out. Neighbouring places we cover include 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). Larger places within reach include London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west) and Kensington (14 miles north-west).
Local landmarks in Keston
In Keston, that means homes and buildings near South Park, Ravens Wood School and The Greyhound pub, among other places. The closest station to Keston is Hayes (Kent) station, roughly 1.5 miles north-west of the centre. A little further out are Princess Royal University Hospital (1.1 miles east) and Bethlem Museum of the Mind (1.5 miles north). For a walk, there’s West Kent Golf Course nature reserve and Summer Hill.
Leave it or put it right?
Replacing a boiler in a hurry when it breaks leaves little time to consider a heat pump. Surveying and designing in advance means the system is sized right and any grant is applied for while the old heating still works. Getting the work done in Keston before summer avoids the busiest weeks.
The pipe route, the height of the units and how we reach them all affect the cost. Each of those is built into the quote and give you a fixed price before we start.
Why choose AirCon Doctor in Keston
- Members of Checkatrade
- Covering London and the South East
- F-Gas company certification
- Diagnosis first, then a fixed price
See what air conditioning costs or our accreditations and certificates.
What a customer said
“Excellent service from start to finish. Two wall-mounted units installed in our home. Clean, tidy work: they protected all the floors and left no mess. The systems work brilliantly. Would highly recommend.”
Sarah M., East Grinstead