Heat pumps in London
£7,730 to £20,140 installed, and 40 Boiler Upgrade Scheme grants already paid in the council area.
What a system costs in London
6kW
£7,730–£9,990
Saves up to £207 a year. Pays back in about 7 years after the £7,500 grant (43 years without it).
9kW (most common)
£11,090–£14,180
Saves up to £310 a year. Pays back in about 17 years after the £7,500 grant (41 years without it).
14kW
£15,100–£20,140
Saves up to £408 a year. Pays back in about 25 years after the £7,500 grant (43 years without it).
Source: Home Energy Quotes Cost Index, costs modelled July 2026, savings at the October to December 2026 price cap. Prices are estimates and include installation and VAT. Actual costs may vary.
London in numbers
Published statistics for the Westminster council area, not our estimates.
40 Boiler Upgrade Scheme heat pump grants were paid in the Westminster council area between May 2022 and June 2026. At the 2021 Census, 56.2% of households in the Westminster council area used mains gas as their only central heating, 0.5% oil only and 18.5% electricity only. The council is part of a Warm Homes: Local Grant consortium led by Greater London Authority, allocated £53,470,024 in principle across the consortium for April 2025 to March 2028.
| Westminster council area | Figure | Source |
|---|---|---|
| Boiler Upgrade Scheme heat pump grants paid | 40 | DESNZ and Ofgem, May 2022 to June 2026 |
| Households on mains gas heating only | 56.2% | Census 2021, ONS |
| Households on oil heating only | 0.5% | Census 2021, ONS |
| Households on renewable heating only | 0.2% | Census 2021, ONS |
| Homes with an EPC rated D to G | 36% | ONS, EPCs lodged to March 2025 |
| Warm Homes: Local Grant, 2025 to 2028 | £53,470,024 to the consortium led by Greater London Authority | DESNZ, list updated July 2026 |
| Electricity network operator | UK Power Networks (London) | NESO licence area boundaries |
London is served by UK Power Networks, the electricity network operator for London. A heat pump has to be registered with the network operator. Your installer normally does this: smaller systems are notified after installation, and larger ones need approval before work starts.
These are published official statistics for the Westminster council area, which covers London, not Home Energy Quotes estimates. Sources checked 6 October 2026.
Is London a good place for heat pumps?
The area’s housing stock includes a range of properties suited to heat pumps installations throughout London. Combined with South East’s energy prices, heat pumps installations here may offer good value (individual results will vary).
London has a population of 8,900,000, and the area falls within the South East region. We recommend getting at least 3 quotes to compare prices.
Find Installers in London
We recommend getting at least 3 quotes from qualified installers before making a decision. Check reviews, ask for local references, and make sure warranties are clearly stated in writing.
What to check before hiring an installer in London
- Qualifications — check the installer holds relevant qualifications and certifications for heat pumps before signing any contract
- Local references — ask for completed jobs in London or Greater London
- Reviews — check online reviews before committing
- Warranty — product and workmanship warranties should be clearly stated in writing
- 3 quotes minimum — we recommend comparing at least three quotes to ensure you get a fair price
Questions about heat pumps in London
How much do heat pumps cost in London?
How many heat pump grants have been paid in London?
Is there a grant for heat pumps in London?
The Boiler Upgrade Scheme offers up to £7,500 towards an air source or ground source heat pump in London, or £9,000 until March 2027 for homes heated by oil or LPG with no mains gas. It is open to property owners in England and Wales.
How long is the payback period in London?
Do I need planning permission in London?
How do I find a good installer in London?
Get quotes for your home in London
Up to three approved installers who cover London may contact you. Free, no obligation.
Heat Pumps in nearby towns
Last reviewed: . Costs are modelled estimates from the Home Energy Quotes Cost Index — see how we calculate them. Grant rates are checked against GOV.UK.