How long is the payback period for boilers in London?

Based on estimated potential savings of up to £350 per year, a typical system in London typically pays back in around 15 years. Actual results depend on your property and energy usage.

How much can I save with boilers in London?

Homeowners in London could save up to £350 per year with Boilers. Actual savings depend on property type, energy usage and tariff.

Boilers

Boilers in London — 2026 Guide

Q: How much do boilers cost in London?

Boilers in London typically cost between £2080 and £4790 installed (estimated). The average homeowner pays around £3010. Actual costs vary depending on property and installer.

Q: Do I need planning permission for boilers in London?

Most domestic boilers installations in London fall under permitted development rights and do not require planning permission, though listed buildings and conservation areas may be exceptions.

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

Quick answer: Boilers in London cost between £2080 and £4790 installed (2026 prices). The average homeowner could save up to £350 per year on energy bills. The Boiler Upgrade Scheme offers up to £7,500 towards a heat pump in London.

Based on a typical system size, average energy prices and a typical home — your figure will differ.

£3010

Est. installed cost

up to £350/yr

Could save (est.)

typically ~15 yrs

Payback (est.)

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.

Boilers Costs in London (2026)

System size	Typical cost	Could save (est.)	Payback (est.)
24–30kW combi	£1680–£2560	up to £280/yr	~16 yrs
35–40kW system (most common)	£2670–£3440	up to £400/yr	~15 yrs
40kW+ heat-only	£3980–£5880	up to £550/yr	~14 yrs

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

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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 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

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?

The Boiler Upgrade Scheme offers up to £7,500 towards a heat pump in London.

How long is the payback period in London?

The estimated payback period in London is typically around 15 years, based on estimated potential savings of up to £350 per year. 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.

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