Greater London · Heat pump installation
Heat pump installers in St James's
Air source heat pumps in St James's from an F-Gas certified company, with the manufacturer’s warranty terms explained on your quote. Enquiries answered the same working day.
- Finding a place for the outdoor unit
- Checking whether planning permission is needed
- Working out where a cylinder could go
Air source heat pumps in St James's, done properly
An air-to-water heat pump heats water to a lower temperature than a typical boiler, 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. Typical jobs include planning and permitted development questions and wanting to stop using oil, LPG or gas for heating, across radiator systems, homes heated by oil, LPG or gas and air-to-air heat pumps.
For flats in St James's, the lease, the freeholder and the rules for flats all come into it. The planning rules for flats are stricter than for houses, and we check before designing.
Some manufacturers make regular servicing by a qualified engineer a condition of their warranty. If that applies to your system, booking the service on time keeps the record straight, and every service is written up.
- Where
- St James's (W1F, W1D, W1J)
- Region
- Greater London
- Pricing
- Fixed after a survey or pictures
- Credentials
- F-Gas certified, NICEIC approved, MCS
- Guide price
- £8,000–£16,000 (0% VAT on homes), before the grant
- Call
- 07833 053749
- Reviewed
- 30 October 2026
Why deal with it now?
Planning rules have specific conditions. Checking the position for your home at the survey stage avoids surprises later, including conservation areas, listed buildings and Article 4 directions. Approvals for flats in St James's can take longer than the install itself.
No two properties are the same, so each one gets its own fixed-price quote. The system, the access, the pipe routes and the parts involved all make a difference.
What you get with us
- MCS certification for heat pump work
- Covering London and the South East
- Warranty terms set out brand by brand
- A fixed price before any work starts
Take a look at how installs are priced or how to check a contractor.
Looking after it afterwards
A little care keeps the system in better shape. We recommend:
- Ask about the grant before you commit
- Look at insulation alongside the heat pump
- Know the servicing conditions in your warranty
The warranty on the heat pump is the manufacturer’s, on its own terms. We go through the conditions with you, including any servicing they ask for.
Keep insulation and draught-proofing in good order because it reduces the heat the system needs to supply.
Air source heat pumps in St James's: the local picture
Valuation Office Agency council tax records put about 54% of homes across St James's and its surrounding area before 1919, and the 2021 Census found about 94% of households live in flats. Older homes can lose heat faster, so a room-by-room heat loss calculation, and sometimes insulation or larger radiators, comes before sizing a heat pump. A flat may have no room for a hot water cylinder, and the freeholder typically has a say on the outdoor unit, which can tip the choice towards air-to-air. In London, outside space and the rules for flats often decide which kind of heat pump suits.
Historic houses such as Marlborough House, about 0.3 miles south-west, are a reminder that listed homes need consent before a heat pump goes in. If your home is one of the older properties near St James’s Church, the survey checks whether it’s listed or in a conservation area before the outdoor unit position is chosen.
St James's is about 1 mile south-east of City of Westminster, in Greater London. Whether you’re in the middle of St James's or further out, we cover air source heat pumps, from small jobs to large ones. We cover 764 places across Greater London.
Not far from St James's, a recent job of ours was on East Hill, Wandsworth (SW18), about 4 miles south-west: installing a Daikin wall-mounted unit in the open-plan living area.
Duck Lane, Bruton Lane and Bridle Lane and the roads off them are all inside our area. Work in W1F, W1D and W1J follows the same survey, fixed-price quote and written records as everywhere else we cover. Places around St James's that are also on our list: Chinatown (1 mile north), Charing Cross (1 mile east), Soho (1 mile north), West End (1 mile north-east) and Burlington Estate (1 mile west). Larger places within reach include Kensington (3 miles west), Shoreditch (3 miles north-east), Walthamstow (7 miles north-east) and Hoxton (3 miles north-east).
What’s near St James's
We fit and service air conditioning in homes and premises around LITE Regal International School, Tom Cribb pub and London Library and the streets around them. Other local landmarks include Harris Westminster Sixth Form (0.6 miles south) and St Anne's Churchyard (less than half a mile north). St James's has its own railway station: London Charing Cross station. A little further out are The Museum of Practical Geology (under half a mile north-west) and Montfichet's Tower (1.4 miles east). Not far away are St. James's Park Lake and Ludgate Hill.
What we do, step by step
On the day, we arrive at the time agreed with you and check the plan with you first. Floors and furniture near the work are covered with dust sheets, and anything electrical is made safe before work starts. On site, it 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. Let us know who controls access to the building in St James's, as that saves time on the day.
- It starts with a conversation about the home, the existing heating and your plans.
- On the visit we calculate what every room loses on a cold day, then check the radiators, room for a cylinder and outdoor unit options.
- The price comes back fixed and in writing, with the grant and VAT shown line by line.
- Fitting day: the outdoor unit is placed, the indoor side connected and the controls set up.
- The system is commissioned and registered under MCS, and we show you how to use it.
Before we arrive
- Tell us about access, such as roof hatches, high walls or locked plant areas
- Mention any managing agent or landlord rules we need to follow
- Make sure we can reach the outdoor unit, or where it will go
Ask for a quote
VAT is set out clearly on every quote, 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. For a fixed-price quote, phone us on 07833 053749 or write to us at info@aircondoctor.co.uk.
Related advice
For landlords and property managers
Bigger systems bring extra duties: a TM44 inspection by an accredited energy assessor is required at least every 5 years for systems over 12 kW. We can arrange it, prepare the system for it and fix what it finds.
Records are where property maintenance often slips. Each visit produces a dated record, plus the F-Gas records where refrigerant is involved, ready for a tenant, a buyer or an inspection.
St James's questions
Is planning permission needed for a heat pump in St James's?
It comes down to the building and the spot chosen for the outdoor unit. The centre of St James's is in the Regent Street Conservation Area. A heat pump on a house can be permitted development if it meets the conditions, including the MCS noise check, but not within the grounds of a listed building, and in a conservation area the outdoor unit cannot face a road. Where needed, we check with the planning department at Westminster council, usually the authority for St James's.
Is the heat pump grant available in St James's?
Yes, if the home and the heat pump meet the scheme’s rules: St James's is in England, where it applies. It gives £7,500 towards an air-to-water or ground source heat pump, or £2,500 towards an air-to-air heat pump that replaces the fossil-fuel heating and meets the whole home’s heating need. The installer applies, and we’re MCS certified.
Do you work on systems someone else installed?
Yes. We look at it first and tell you what we find, including any issues with how it was fitted. Any work is priced before it goes ahead.
Should I choose air-to-water or air-to-air?
Air-to-water suits homes with radiators and a cylinder; air-to-air suits rooms that need heating and cooling. The survey helps decide. Both are part of what we install.
How long does a heat pump installation take?
Expect it to take from a couple of days to around a week, depending on the system and how much of the heating changes. How much of the heating changes decides most of the time and the timing is set out with your quote.
How soon will you get back to me?
On the same working day you contact us. After that, we agree a survey, diagnosis or installation date that suits you, and you get a fixed price before any work goes ahead.
Which manufacturers do you install and repair?
We install and work on the leading makes, including Mitsubishi Electric, Daikin, Fujitsu, Panasonic, Toshiba, LG, Samsung, Mitsubishi Heavy Industries and Hitachi. Tell us the make and model and we will take it from there.
Places near St James's
Also in St James's
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