- Area
- Dyfed
- Postcode district
- SA31
- Nation
- Wales
- Main grant
- Boiler Upgrade Scheme, £7,500
- Survey
- Free for installation enquiries
Heat pump grants in Carmarthen: what to expect
Every property in Carmarthen is different, so the design starts from measurements rather than a rule of thumb. That keeps the system the right size and the running costs predictable.
For landlords with property in Carmarthen, we explain the funding position for each home before quoting. Oil and LPG-heated homes around Carmarthen can have their options set out alongside the cost of a full system.
Heat pump funding depends on which UK nation you live in, so we confirm what applies to your home and handle the grant steps alongside your quote.
- Anyone unsure which scheme applies and wanting it checked before committing
- Homes in England and Wales on oil or LPG, where a higher grant applies between set dates
- Homeowners in England and Wales replacing gas, oil, LPG or electric heating
What's included
- Written quote showing the full price and any grant deduction
- Boiler Upgrade Scheme application made by the MCS-certified installer (England and Wales)
- Eligibility check for the scheme that covers your nation
- MCS certificate and handover documents after installation
- Installation scheduled around your grant confirmation or funding offer
Homeowners in Carmarthen get a clear written quote showing the full price and any funding that applies.
Grants and rules for heat pumps in Wales
In Wales the Boiler Upgrade Scheme gives £7,500 towards an air source heat pump (£9,000 if it replaces oil or LPG, from 21 July 2026 to 31 March 2027; £2,500 for air-to-air). The MCS-certified installer named in your quote applies to Ofgem for you, and the grant comes off your Carmarthen quote.
Installing heat pumps is zero-rated for VAT across the UK until 31 March 2027. Wales has its own permitted development rules for air source heat pumps, so we check what applies to your property, including listed building and conservation-area constraints, at the survey.
Grants and VAT across the UK
| Nation | Main support for heat pumps | Key points |
|---|---|---|
| England | Boiler Upgrade Scheme: £7,500 (£9,000 replacing oil or LPG, 21 July 2026 to 31 March 2027; £2,500 air-to-air) | MCS-certified installer applies; deducted from your quote |
| Wales | Boiler Upgrade Scheme: £7,500 (£9,000 replacing oil or LPG, 21 July 2026 to 31 March 2027) | Same scheme and rules as England |
| Scotland | Home Energy Scotland grant up to £7,500, plus up to £1,500 rural uplift; interest-free loan up to £7,500 | You apply; written offer needed before work starts |
| Northern Ireland | No dedicated heat pump grant for homeowners at present | Some heat pumps funded through NISEP in the past |
Heat pump installation is zero-rated for VAT across the UK, including Northern Ireland, until 31 March 2027. Scheme figures as at October 2026; check gov.uk, Ofgem or Home Energy Scotland before relying on them.
Designing for Carmarthen's winters
On the shortest day Carmarthen gets about 7 hours 46 minutes of daylight, with the noon sun around 15° up. The heating season runs from autumn into spring, so a heat pump that is sized correctly and set up with weather compensation does most of its work in steady, cool conditions.
What happens after you enquire in Carmarthen?
- Start online with a guide price or call us.
- A home survey in Carmarthen gives us the room-by-room heat loss.
- Your written quote sets out the design, the price and the grant position where you live.
- Installation is booked for dates that suit you; most homes take 2–4 days on site.
- After commissioning you get a handover of the controls and settings, plus the certificates.
Heat pump grants in Carmarthen: questions
How soon can you survey a home in Carmarthen?
Survey dates depend on how busy installers are in Dyfed. We offer the next available dates when you enquire and confirm them in writing.
What size heat pump does a Carmarthen home need?
It depends on the heat loss, not the postcode. As a rough guide, a 3 bedroom semi often needs 6–9 kW, but the room-by-room survey sets the actual size for your Carmarthen home.
Do you cover Llanelli as well as Carmarthen?
Yes. We arrange surveys and installation in Llanelli, which is about 13 miles south-east of Carmarthen, and across Dyfed.
How much is the heat pump grant?
It depends on where you live. In England and Wales, the Boiler Upgrade Scheme pays £7,500 towards an air-to-water heat pump, or £9,000 when replacing oil or LPG heating for installations from 21 July 2026 to 31 March 2027. In Scotland, Home Energy Scotland offers up to £7,500, plus a rural uplift and an optional loan. Northern Ireland has no dedicated grant at present.
Do I need an EPC for the Boiler Upgrade Scheme?
No longer. Since 28 April 2026, a valid EPC is not required for the Boiler Upgrade Scheme in England and Wales. The system must still meet the home's full heating and hot water needs, which the room-by-room heat loss calculation confirms. The other eligibility rules, such as owning the property, still apply.