Heat pumps in Pembrokeshire — from coastal cottages to Georgian country houses.
We've been installing heat pumps across Pembrokeshire since 2006, from our base at Capel Hendre, near Ammanford. Air source, ground source and our own drilling rigs: one team for the whole job.
No EPC? Send an enquiry or call 01269 833100. We can check the evidence needed for your property.
Cilrhiw Country House.
- Location
- Near Narberth, Pembrokeshire
- Completed
- November 2021
- Property
- Georgian country house from the 1820s
- Renovation
- 2020 to 2021
- Floor area
- 5,005 square feet
- Source
- Six 100-metre boreholes
- Plant
- Two MasterTherm AquaMaster AQ45i ground-source heat pumps
A big old house is more than a product choice.
At Cilrhiw we drilled six boreholes, installed two ground-source heat pumps and designed the hot water, underfloor heating, radiators and towel rails as one system — for a Georgian house with over 5,000 square feet to keep warm.
Our own drilling division put in the boreholes; our designers sized the source, plant and room-by-room distribution together. That's what "complete system" means in practice — and it's how we approach every Pembrokeshire home, whatever its size.
Read the Cilrhiw Country House storyFollow the heat from the ground into the house.
Three chapters of the same story — how the ground array, plant room and emitters work together at Cilrhiw.
Six boreholes, each 100 metres deep.
Drilled by our in-house team and sized for Cilrhiw's measured heat demand — not a rule of thumb. Your site's geology, access and demand would shape its own collector.
Two heat pumps for heating and hot water.
A pair of MasterTherm AquaMaster AQ45i units carry the house — sized against the borehole field, the building's heat loss and its hot-water demand, and plumbed to serve both.
Every room gets the right emitter.
Underfloor heating in the main living spaces; radiators and towel rails in bathrooms and secondary rooms. Chosen room by room — the balance is different in every older home.
Explore underfloor heating
You feel the system in the rooms, not at the heat pump.
The best heat pump in the world can't fix undersized radiators. That's why room use, heat loss and water temperature get designed together.
Living spaces
Underfloor heating gives a large, gentle emitter area — lovely underfoot in a stone-floored Pembrokeshire farmhouse. Radiators can do the same job where floors can't change.
Bathrooms and secondary rooms
Radiators and towel rails, checked room by room. Existing emitters often stay — we measure before deciding anything.
Built around how you live in the property.
Source, plant, hot water, fabric, emitters and controls — resolved together, around real life. It's the approach behind 4,000+ installed systems over 20+ years.
And afterwards, annual servicing and Comfort Care support are there if you'd like us to keep looking after it.
What the survey works out for your address.
Cilrhiw shows the questions worth asking. The survey answers them for your home — if your home runs on oil or LPG, we compare the proposed system’s running costs with your existing heating.
- Heat demand and fabric
- Room-by-room heat loss, plus a straight answer on whether insulation or draught-proofing would genuinely help.
- Radiators and underfloor
- Whether your emitters can deliver the heat at a lower water temperature — measured, not guessed.
- Current fuel and bills
- What you're paying now on oil, LPG or electric, and a realistic comparison for your house.
- Air-source siting
- Where a unit could sit — airflow, sound, boundaries and service access.
- Land and drilling access
- Whether trenches or boreholes are on the table, and whether a rig can reach the spot.
- Hot water and plant space
- Cylinder space, household hot-water habits and room to maintain everything.
- Electrical capacity
- The supply you have, and any enabling work before the system goes in.
- Planning context
- National Park, listed-building and conservation considerations — checked for you, not left to chance.
Pembrokeshire's plan links off-gas homes with heat pumps.
The county council's energy plan identifies off-gas heating, building retrofit and heat-pump deployment as connected priorities — which matches what we see in Pembrokeshire homes every week.
Read the Pembrokeshire Local Area Energy PlanCoast path or inland? It changes who you ask.
Inside the National Park, the Pembrokeshire Coast National Park Authority handles planning; outside it, the county council does. Listed buildings and conservation areas add their own rules — we establish exactly what applies to your project.
The whole county, coast to Preselis.
Haverfordwest, Pembroke, Pembroke Dock, Milford Haven, Tenby, Narberth, Saundersfoot, St Davids, Fishguard, Newport, Crymych, Letterston, Solva and the Preseli Hills.
Coastal cottage, farmhouse or village home — if you're anywhere in Pembrokeshire, you're covered. See everywhere we work.
Grant help, handled with you.
You may qualify for the Boiler Upgrade Scheme — we handle the application. Green Homes Wales advice and finance can also help.
Eligible air-to-water or ground-source heat pump installations receive £7,500. If your property has no mains gas connection and you are replacing oil or LPG heating, the grant is £9,000 for applications properly made from 21 July 2026 to 31 March 2027. We check eligibility for your home.
Planning a heat pump in Pembrokeshire?
Start with a free online estimate — or for a self-build, holiday let, heritage or development project, send us the site and we'll talk it through.