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Boilers in Slough

£1,753 to £6,134 installed, and 39% of homes in the council area rated EPC D to G.

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By Home Energy Quotes · Updated September 2026 · Slough, Berkshire

Boilers in Slough

What a new boiler costs in Slough

24–30kW combi

£1,753–£2,671

Saves up to £162 a year. Pays back in about 14 years.

35–40kW system (most common)

£2,785–£3,589

Saves up to £231 a year. Pays back in about 14 years.

40kW+ heat-only

£4,152–£6,134

Saves up to £317 a year. Pays back in about 16 years.

Source: Home Energy Quotes Cost Index, costs modelled June 2026, savings at the October to December 2026 price cap. Prices are estimates and include installation and VAT. Actual costs may vary.

Slough in numbers

Published statistics for the Slough council area, not our estimates.

At the 2021 Census, 72.4% of households in the Slough council area used mains gas as their only central heating, 0.1% oil only and 15.2% electricity only. 39% of homes with an EPC in the Slough council area are rated D to G, and the median energy score is 71, which is band C.

Slough council areaFigureSource
Households on mains gas heating only72.4%Census 2021, ONS
Households on oil heating only0.1%Census 2021, ONS
Households on electric heating only15.2%Census 2021, ONS
Homes with an EPC rated D to G39%ONS, EPCs lodged to March 2025
Median EPC energy score71 (band C)ONS, EPCs lodged to March 2025
Electricity network operatorSSEN Distribution (Southern England)NESO licence area boundaries

These are published official statistics for the Slough council area, which covers Slough, not Home Energy Quotes estimates. Sources checked 6 October 2026.

Grants and funding in Slough

No general boiler grant

There is no general government grant for a like-for-like gas or oil boiler replacement in Slough, and the Warm Homes: Local Grant cannot fund new gas boilers. If you switch to a heat pump instead, the Boiler Upgrade Scheme offers up to £7,500.

Source: GOV.UK — Boiler Upgrade Scheme

Standard VAT

Boilers are not on HMRC's list of energy-saving materials, so 20% VAT applies and is inside the prices above.

Source: HMRC — VAT Notice 708/6

Warm Homes: Local Grant

Slough has £1,500,000 of Warm Homes: Local Grant funding allocated in principle for April 2025 to March 2028. Income and EPC rules apply.

Source: DESNZ, list updated July 2026

Is Slough a good place for boilers?

The area’s housing stock includes a range of properties suited to boilers installations throughout Slough. Combined with South East’s energy prices, boilers installations here may offer good value (individual results will vary).

Slough has a population of 166,855, and the area falls within the South East region. We recommend getting at least 3 quotes to compare prices.

Find Installers in Slough

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 Slough

  • Qualifications — check the installer holds relevant qualifications and certifications for boilers before signing any contract
  • Local references — ask for completed jobs in Slough or Berkshire
  • 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 Slough

Questions about boilers in Slough

How much do boilers cost in Slough?
Boilers in Slough cost between £1,753 and £6,134 installed, depending on system size. A typical mid-range system costs around £3,140 including installation and VAT (modelled estimate).
How are homes in Slough heated?
At the 2021 Census, 72.4% of households in the Slough council area, which covers Slough, used mains gas as their only central heating, 0.1% oil only and 15.2% electricity only.
Is there a grant for boilers in Slough?
There is no general government grant for a like-for-like gas or oil boiler replacement in Slough, and the Warm Homes: Local Grant cannot fund new gas boilers. If you switch to a heat pump instead, the Boiler Upgrade Scheme offers up to £7,500.
How long is the payback period in Slough?
The estimated payback period in Slough is typically around 16 years, based on estimated savings of up to £202 a year for a typical home. Actual payback depends on your property size, boiler efficiency and gas tariff.
Do I need planning permission in Slough?
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 Slough before installation.
How do I find a good installer in Slough?
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.

Get quotes for your home in Slough

Up to three approved installers who cover Slough may contact you. Free, no obligation.

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Slough on the map

Map of Slough, Berkshire
Slough, Berkshire and the surrounding area.

Boilers 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.