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Boilers in Merthyr Tydfil

£1,471 to £5,149 installed, and 50% of homes in the council area rated EPC D to G.

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By Home Energy Quotes · Updated September 2026 · Merthyr Tydfil, Rhondda Cynon Taf

Boilers in Merthyr Tydfil

What a new boiler costs in Merthyr Tydfil

24–30kW combi

£1,471–£2,242

Saves up to £162 a year. Pays back in about 11 years.

35–40kW system (most common)

£2,338–£3,013

Saves up to £231 a year. Pays back in about 12 years.

40kW+ heat-only

£3,485–£5,149

Saves up to £317 a year. Pays back in about 14 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.

Merthyr Tydfil in numbers

Published statistics for the Merthyr Tydfil council area, not our estimates.

At the 2021 Census, 84.3% of households in the Merthyr Tydfil council area used mains gas as their only central heating, 0.7% oil only and 2.6% electricity only. 50% of homes with an EPC in the Merthyr Tydfil council area are rated D to G, and the median energy score is 68, which is band D.

Merthyr Tydfil council areaFigureSource
Households on mains gas heating only84.3%Census 2021, ONS
Households on oil heating only0.7%Census 2021, ONS
Households on electric heating only2.6%Census 2021, ONS
Homes with an EPC rated D to G50%ONS, EPCs lodged to March 2025
Median EPC energy score68 (band D)ONS, EPCs lodged to March 2025
Electricity network operatorNational Grid Electricity Distribution (South Wales)NESO licence area boundaries

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

Grants and funding in Merthyr Tydfil

No general boiler grant

There is no general grant for a like-for-like boiler replacement in Merthyr Tydfil. If your home has no working heating and you receive a means-tested benefit or live in a low-income household, Nest may repair or replace the boiler. Switching to a heat pump can qualify for the Boiler Upgrade Scheme, worth up to £7,500.

Source: Welsh Government — Nest

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

Is Merthyr Tydfil a good place for boilers?

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

Merthyr Tydfil has a population of 39,535, and the area falls within the Wales region. We recommend getting at least 3 quotes to compare prices.

Find Installers in Merthyr Tydfil

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 Merthyr Tydfil

  • Qualifications — check the installer holds relevant qualifications and certifications for boilers before signing any contract
  • Local references — ask for completed jobs in Merthyr Tydfil or Rhondda Cynon Taf
  • 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 Merthyr Tydfil

Questions about boilers in Merthyr Tydfil

How much do boilers cost in Merthyr Tydfil?
Boilers in Merthyr Tydfil cost between £1,471 and £5,149 installed, depending on system size. A typical mid-range system costs around £2,636 including installation and VAT (modelled estimate).
How are homes in Merthyr Tydfil heated?
At the 2021 Census, 84.3% of households in the Merthyr Tydfil council area, which covers Merthyr Tydfil, used mains gas as their only central heating, 0.7% oil only and 2.6% electricity only.
Is there a grant for boilers in Merthyr Tydfil?
There is no general grant for a like-for-like boiler replacement in Merthyr Tydfil. If your home has no working heating and you receive a means-tested benefit or live in a low-income household, Nest may repair or replace the boiler. Switching to a heat pump can qualify for the Boiler Upgrade Scheme, worth up to £7,500.
How long is the payback period in Merthyr Tydfil?
The estimated payback period in Merthyr Tydfil is typically around 13 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 Merthyr Tydfil?
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 Merthyr Tydfil before installation.
How do I find a good installer in Merthyr Tydfil?
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 Merthyr Tydfil

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

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Merthyr Tydfil on the map

Map of Merthyr Tydfil, Rhondda Cynon Taf
Merthyr Tydfil, Rhondda Cynon Taf 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.