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Boilers

Boilers in London — 2026 Guide

By Owen Griffiths, Contributor · Updated April 2026 · London, Greater London

Boilers hero image
Quick answer: Boilers in London cost between £2080 and £4790 installed (2026 prices). The average homeowner may save an estimated £350 per year on energy bills. There is currently no government grant available for this product.
£3010
Est. installed cost
£350/yr
Est. annual saving
~15 yrs
Est. payback
1625 hrs
Sunshine hours

Is London a Good Place for Boilers?

The area’s housing stock includes a range of properties suited to boilers installations throughout London. Combined with South East’s energy prices, boilers 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.

London

Boilers Costs in London (2026)

System size Typical cost Est. annual saving Est. payback
24–30kW combi £1680–£2560 £280/yr 16 yrs
35–40kW system (most common) £2670–£3440 £400/yr 15 yrs
40kW+ heat-only £3980–£5880 £550/yr 14 yrs

Source: Green Reach Energy research, March 2026. Prices are estimates and include installation and VAT. Actual costs may vary.

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Available Grants in London

No specific government grant is currently available for this product.

Boilers grants in London

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.

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What to check before hiring an installer in London

  • Qualifications — check the installer holds relevant qualifications and certifications for boilers 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
Boilers installer in London

Frequently Asked Questions

How much do boilers cost in London?
Boilers in London cost between £2080 and £4790 installed. A typical mid-range system costs around £3010 including installation and VAT (estimated, based on our research).
Is there a grant for boilers in London?
There is no specific national grant, but check with your local council for any area-specific schemes.
How long is the payback period in London?
The estimated payback period in London is around 15 years, based on estimated annual savings of around £350. Actual payback depends on your property size, boiler efficiency and gas tariff.
Do I need planning permission in London?
Most boilers installations fall under permitted development rights and do not require planning permission. However, listed buildings, conservation areas and flats may need approval. Always check with your local planning authority in London before installation.
How do I find a good installer in London?
We recommend getting at least 3 quotes from qualified installers. Check online reviews and verify that the installer holds relevant qualifications before signing any contract.