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Heat Pump Installers in Pembrokeshire

Thermal Earth has been installing heat pumps across Pembrokeshire since 2006. Based just over the border in Ammanford, Carmarthenshire, we are one of the closest specialist heat pump installers to the Pembrokeshire region. With over 3,500 installations and our own borehole drilling team, we deliver complete ground source and air source heat pump systems across the county.

Pembrokeshire is one of the best areas in Wales for heat pump installations. A large proportion of homes are off the gas grid, relying on expensive oil or LPG. Switching to a heat pump can reduce heating bills by 40–70% and eliminate your dependence on fossil fuels. With the £7,500 Boiler Upgrade Scheme grant available to all homeowners, there has never been a better time to make the switch.

We install MasterTherm heat pumps, manufactured in the Czech Republic with some of the highest COP ratings on the market. Every installation is designed specifically for your property following a detailed heat loss survey, ensuring maximum efficiency and comfort.

Why Choose Thermal Earth in Pembrokeshire?

  • 20+ years of experience with over 3,500 heat pump installations across Wales and the UK
  • Your nearest specialist — based in Ammanford, just 30 minutes from Haverfordwest
  • Own borehole drilling team — three specialist rigs with extensive experience in Pembrokeshire’s varied geology
  • MCS certified installer — required for the £7,500 BUS grant. We handle the full application
  • Off-grid specialists — we have replaced hundreds of oil and LPG systems with efficient heat pumps across rural Wales
  • Comfort Care aftercare and remote monitoring for ongoing peace of mind

Areas We Cover in Pembrokeshire

We install heat pumps across the whole of Pembrokeshire, including Haverfordwest, Pembroke, Pembroke Dock, Milford Haven, Tenby, Narberth, Saundersfoot, St Davids, Fishguard, Newport, Crymych, Letterston, Solva, and the Preseli Hills. Whether you are in a coastal cottage, a farmhouse, or a village property, our team covers the full county and surrounding areas.

Frequently Asked Questions

How much does a heat pump cost in Pembrokeshire?

A typical air source heat pump installation in Pembrokeshire costs between £8,000 and £18,000, while ground source systems range from £18,000 to £45,000 depending on your property size and ground conditions. The £7,500 BUS grant is deducted directly from the price. Most of our Pembrokeshire customers are replacing oil boilers and see significant running cost savings from day one.

Are heat pumps suitable for off-grid Pembrokeshire homes?

Absolutely — off-grid homes are where heat pumps deliver the biggest savings. If you currently use oil or LPG, a heat pump can cut your heating costs by 40–70%. Pembrokeshire’s mild maritime climate means air source heat pumps run at excellent efficiency year-round. For larger or older rural properties, ground source systems offer even higher performance.

Do I need planning permission for a heat pump in Pembrokeshire?

Most installations fall under permitted development. However, Pembrokeshire has several conservation areas and the Pembrokeshire Coast National Park, where additional planning rules may apply. We check planning requirements for every project during our initial site assessment and handle any applications needed.

What grants are available for Pembrokeshire homeowners?

Pembrokeshire homeowners can claim the £7,500 Boiler Upgrade Scheme grant towards any heat pump installation — no income test required. The Welsh Government’s Nest Scheme and Green Homes Wales programme offer additional support for eligible households. We advise on all available funding during your free consultation.

How long does a heat pump installation take?

A typical air source installation takes 2–3 days. Ground source systems take 3–5 days for indoor works plus 1–3 days for borehole drilling or trench excavation. We restore all garden areas after ground works. Our own drilling team means efficient scheduling without relying on third-party contractors.

Can a heat pump replace my oil boiler?

Yes. This is the most common installation we carry out in Pembrokeshire. A heat pump connects to your existing heating circuit — radiators, underfloor heating, or both. We carry out a full heat loss survey to ensure the system is sized correctly, and in many cases existing radiators work perfectly without replacement.