The local picture
Home energy in Carmarthenshire
A large share of homes in Carmarthenshire are off the gas grid, typically heated by oil, LPG or electric heaters. These are some of the most expensive ways to heat a home — and exactly what heat pump and off-gas grants are designed to replace.
That’s about 35,409 of the 89,940 homes in Carmarthenshire — higher than the average for Wales.
Sources: DESNZ, Sub-national estimates of properties not connected to the gas network, 2024 data (published December 2025); DESNZ, Sub-regional fuel poverty data 2026 (2024 data), Low Income Low Energy Efficiency measure.
What’s available
Grants you could get in Carmarthenshire
With so many homes in Carmarthenshire off mains gas, heat pump funding is often the biggest opportunity — but we’ll check every scheme you could qualify for.
Eligibility
Who can apply in Carmarthenshire?
- You own your home or rent it privately (with your landlord’s permission)
- Your heating is old, inefficient or not on mains gas — or you have no central heating
- Someone in your household receives a qualifying benefit, or your income or postcode qualifies through local criteria
- For heat pumps: you’re replacing oil, gas, LPG or electric heating (not means-tested)
Not sure? Just ask.
Rules differ between schemes, and some depend on where you live in Carmarthenshire. Apply online or call 0800 246 1797 and we’ll check your postcode.
FAQs
Grant questions in Carmarthenshire
Can I get a free boiler in Carmarthenshire?
Yes — homeowners and private tenants in Carmarthenshire can apply for government-backed funding. Eligibility usually depends on your heating system and household circumstances, such as receiving certain benefits, and in some areas your income or postcode. A quick application tells us what you could be entitled to.
How many homes in Carmarthenshire are off the gas grid?
Around 39.4% of homes in Carmarthenshire — roughly 35,409 properties — aren’t connected to the gas network, higher than the Wales average of 19.5%. These homes can often get extra support, including up to £9,000 towards a heat pump where the Boiler Upgrade Scheme applies.
Can I get a heat pump grant in Carmarthenshire?
Yes. The Boiler Upgrade Scheme gives £7,500 towards an air or ground source heat pump, plus an extra £1,500 until March 2027 for homes heated by oil or LPG with no mains gas connection. It isn’t means-tested.