Greater London · Heat pump installation
Air Source Heat Pumps in St Paul's Cray
Air source heat pumps across St Paul's Cray and nearby, from a site survey or diagnosis to sign-off and a fixed price agreed before we start.
- Deciding which kind of heat pump suits the home
- Not knowing whether a grant applies
- Questions about where the outdoor unit can go
Air source heat pumps in St Paul's Cray, done properly
Heat pumps run at lower flow temperatures than most boilers, so radiators may need to be larger to give out the same heat. We check each radiator against the room’s heat loss and anything that needs changing is in the quote. If the problem is checking eligibility for a heat pump grant and finding a place for the outdoor unit, we can sort it out.
Homes in St Paul's Cray are often flats and terraces, where outside space is limited, and that decides which kind of heat pump works. An air-to-water system needs space outside and usually a hot water cylinder inside, while air-to-air units take less room.
Some warranty terms depend on the system being serviced regularly by a qualified engineer. If that applies to your system, booking the service on time keeps the record straight, and every service is written up.
- Location
- St Paul's Cray (BR5, BR7)
- Wider area
- Greater London
- Certified
- F-Gas certified, NICEIC approved, MCS
- Prices
- £8,000–£16,000 (0% VAT on homes), before the grant
- Quote
- A fixed price before any work starts
- Replies
- Answered the same working day
- Call
- 07833 053749
- Checked
- 30 October 2026
When it’s something else
To be straight with you, some problems need a different answer:
- Planning approval where permitted development doesn’t apply
- Draught-proofing and insulation upgrades
- Disconnecting or servicing a gas boiler
If you are not sure, just give us a ring on 07833 053749 or write to us at info@aircondoctor.co.uk and we’ll give you a straight answer before booking.
What we work on in St Paul's Cray
- Air-to-water heat pumps
- Radiator systems
- Homes heated by oil, LPG or gas
- Air-to-air heat pumps
- Hot water cylinders
- Underfloor heating
Your questions about air source heat pumps in St Paul's Cray
Can you fit air conditioning in a London flat in St Paul's Cray?
Normally, yes, though leaseholders normally need the freeholder’s agreement. 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 a heat pump in St Paul's Cray without planning permission?
It depends on the property. Historic England lists about 6 buildings and structures within half a mile of the centre of St Paul's Cray. On a house, an air source heat pump can often go ahead under permitted development, with an outdoor unit of no more than 1.5 cubic metres and an installation that meets MCS 020(a), which includes a noise check. Those rights do not reach the grounds of a listed building, and conservation areas rule out walls or roofs facing a road. If that might affect you, we ask the local planning authority (for St Paul's Cray, typically Bromley council).
How quickly will you reply?
You’ll hear from us the same working day. If it’s an emergency, ring the 24/7 line instead.
Do you offer maintenance contracts?
Yes. Maintenance contracts are part of what we do, set at the interval the system and the manufacturer’s terms need. Every visit is recorded and F-Gas records kept where they apply.
How much VAT is charged on a heat pump in a home?
In residential accommodation, 0% until 31 March 2027 and 5% afterwards. Hotels and businesses pay the standard rate. Please treat this as general information, not tax advice.
What’s the price of a heat pump installation?
Expect £8,000–£16,000 for an air-to-water system, with 0% VAT on homes, before the grant is taken off. Where you land depends on the size of heat pump, any radiators that need changing and the hot water cylinder, and air-to-air systems are priced after a survey.
Can I get a grant for an air-to-air heat pump?
A £2,500 grant is available in some cases. Adding air-to-air alongside a boiler doesn’t qualify as it has to meet the full heating demand.
Places near St Paul's Cray
Other services in St Paul's Cray
Fixed-price quotes for air source heat pumps in St Paul's Cray
Before we fix a price, we need to know a few things. We check:
- The type of system, from a single split to a larger system
- How easy the units are to reach
- Whether the existing supply is suitable
Our prices page shows typical ranges, but your price depends on the job in front of us. For a fixed-price quote, ring 07833 053749 or fill in the contact form, and we’ll explain what it covers.
Asking for a quote
What to send for a quote:
- A short video of any fault, such as a noise or a flashing light
- The paperwork from the last service, if you have it
- Photos showing the indoor unit and the space around it
For air source heat pumps in St Paul's Cray, ring us on 07833 053749, or email if that’s easier. Tell us what kind of property it is and what you’d like done, plus some pictures if they’re to hand. We reply the same working day.
Air source heat pumps in St Paul's Cray: the local picture
About 54% of homes in St Paul's Cray and the neighbourhoods around it date from 1945 to 1972, according to VOA council tax data. Whether the walls and loft have been insulated makes a real difference to the heat pump size for homes of that period. For a London home, the outdoor unit position and the MCS noise check need careful planning.
If your home is listed, like Bromley Palace about 3.7 miles west, listed building consent comes before any heat pump work. If you live near St Mary Cray station, the survey compares air-to-water and air-to-air for your home before anything is quoted.
St Paul's Cray is about 1 mile north of Orpington, in Greater London. Whatever kind of property you have in St Paul's Cray, we can help with air source heat pumps. We reply to enquiries the same working day and our emergency line runs 24/7. St Paul's Cray is one of 764 places in Greater London where we work.
Our nearest recent job to St Paul's Cray was on Station Road, Orpington (BR6), about 1 mile south: installing three Daikin cassette units in the main office area and a wall-mounted unit in the client meeting room.
Our working area takes in BR5 and BR7 in full. You will find streets such as Main Road, Murray Road and Rushet Road, each of them within reach. Neighbouring places we cover include St Mary Cray (1 mile south), Poverest (1 mile south), Derry Downs (1 mile south), Orpington (1 mile south) and Kevington (2 miles south-east). Larger places within reach include London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west) and Kensington (15 miles north-west).
What’s near St Paul's Cray
In St Paul's Cray, that means homes and buildings near Kemnal Technology College, The Blue Anchor Public House and Walsingham School. St Paul's Cray has its own railway station: St Mary Cray station. Other landmarks nearby include Lullingstone Castle (4.8 miles south-east) and London Borough of Bromley Museum (1.5 miles south). Not far away are The Warren and Summer Hill.
How it works
The visit has three parts, a bit like a doctor’s appointment: diagnose, treat and sign off. First we check the system or the space against the plan, then we do the work, and finally everything is tested, recorded and explained. Most of the time goes on the middle part, and that takes anything from a couple of days for air-to-air to the best part of a week for air-to-water with radiator changes. For a job in St Paul's Cray, tell us about parking, permits and access to the building when you get in touch.
- It starts with a conversation about the home, the existing heating and your plans.
- We survey the home room by room for heat loss, and check the emitters, hot water and outdoor unit position.
- We send a fixed-price quote that shows the equipment, the grant position and the VAT.
- Installation covers the outdoor unit, the indoor connections and the controls.
- Once it’s running correctly, the MCS certificate is issued and we show you the settings.
Preparing for the visit
- Let us know if the units are on a roof, a high wall or in a locked area
- Let us know where we can park and unload
- Give us access to the outside wall, roof or yard where the outdoor unit sits
Getting a quote
Every quote starts with a look at the job, from a site survey or, where the job is straightforward, from pictures and measurements. After that, we send a fixed price so you know the cost before we begin.
Related advice
Why it’s worth doing now in St Paul's Cray
Getting the sizing wrong causes problems that are hard to fix later. Doing the survey properly from the start avoids that. In a London building, getting the freeholder’s or agent’s agreement can take a while, so it’s worth starting early.
One room or a whole building, we price it on the same basis: the work involved, the access and the equipment. You will have a fixed price before work begins, and the quote sets out the VAT.
Why choose AirCon Doctor in St Paul's Cray
- Mitsubishi Electric, Daikin, Fujitsu, Panasonic, Toshiba and more
- Fixed-price quotes after a survey or pictures
- Emergency calls taken 24/7
- Covering London and the South East
A customer’s words
“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