Heat pumps in Llanelli
£6,247 to £16,277 installed, and 360 Boiler Upgrade Scheme grants already paid in the council area.
What a system costs in Llanelli
6kW
£6,247–£8,074
Saves up to £207 a year. The £7,500 grant covers the typical price here (35 years without it).
9kW (most common)
£8,963–£11,460
Saves up to £310 a year. Pays back in about 9 years after the £7,500 grant (33 years without it).
14kW
£12,204–£16,277
Saves up to £408 a year. Pays back in about 17 years after the £7,500 grant (35 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.
Llanelli in numbers
Published statistics for the Carmarthenshire council area, not our estimates.
360 Boiler Upgrade Scheme heat pump grants were paid in the Carmarthenshire council area between May 2022 and June 2026. At the 2021 Census, 54.3% of households in the Carmarthenshire council area used mains gas as their only central heating, 23.7% oil only and 4% electricity only.
| Carmarthenshire council area | Figure | Source |
|---|---|---|
| Boiler Upgrade Scheme heat pump grants paid | 360 | DESNZ and Ofgem, May 2022 to June 2026 |
| Households on mains gas heating only | 54.3% | Census 2021, ONS |
| Households on oil heating only | 23.7% | Census 2021, ONS |
| Households on renewable heating only | 0.8% | Census 2021, ONS |
| Homes with an EPC rated D to G | 63% | ONS, EPCs lodged to March 2025 |
| Electricity network operator | National Grid Electricity Distribution (South Wales) | NESO licence area boundaries |
Llanelli is served by National Grid Electricity Distribution, the electricity network operator for South Wales. 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 Carmarthenshire council area, which covers Llanelli, not Home Energy Quotes estimates. Sources checked 6 October 2026.
Is Llanelli a good place for heat pumps?
The area’s housing stock includes a range of properties suited to heat pumps installations throughout Llanelli. Combined with Wales’s energy prices, heat pumps installations here may offer good value (individual results will vary).
Llanelli has a population of 42,155, and the area falls within the Wales region. We recommend getting at least 3 quotes to compare prices.
Find Installers in Llanelli
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 Llanelli
- Qualifications — check the installer holds relevant qualifications and certifications for heat pumps before signing any contract
- Local references — ask for completed jobs in Llanelli or Carmarthenshire
- 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 Llanelli
How much do heat pumps cost in Llanelli?
How many heat pump grants have been paid in Llanelli?
Is there a grant for heat pumps in Llanelli?
The Boiler Upgrade Scheme offers up to £7,500 towards an air source or ground source heat pump in Llanelli, 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 Llanelli?
Do I need planning permission in Llanelli?
How do I find a good installer in Llanelli?
Get quotes for your home in Llanelli
Up to three approved installers who cover Llanelli may contact you. Free, no obligation.
Llanelli on the map
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.