Heat pumps for Brecon and the Bannau — built for stone walls and hill weather.
Thermal Earth installs air- and ground-source heat pumps across Brecon and the Bannau Brycheiniog National Park. Most homes here are off the gas grid — and getting off oil or LPG is where a heat pump saves the most.
Stone farmhouse, rural cottage or a modern home in Brecon town: we design the system around the building, then install it with our own crews from our base in Ammanford.
No EPC? Send an enquiry or call 01269 833100. We can check the evidence needed for your property.
Brecon homes come in every shape. So do our systems.
Town terraces, farms, visitor businesses and remote cottages all heat differently. What stays the same is the way we work: measure the building, design the whole system, install it with one team.
Five things we look at on a Brecon survey.
Stone walls, age or a remote lane don't rule out a heat pump — plenty of our best installations are in exactly those homes. Here's what actually decides the design.
The property as it stands.
Construction, fabric, draughts and how the rooms are used. We suggest improvements only where they genuinely cut demand.
Cold-day demand, measured.
Room-by-room heat loss on a hard January day — plus hot water for the household. The old boiler's size isn't the answer.
Checked room by room.
Radiators and underfloor heating are measured at the lower water temperature a heat pump runs at. Much of what you have can often stay.
Air or ground, proven on site.
Unit siting and sound for air source; land, rig access and collector sizing for ground source.
Designed for real life.
Electrical supply, controls and how you actually live — a farmhouse B&B runs differently from a weekday commuter home.
Air source, when the siting works.
The simplest route for many Brecon homes — no ground works, one well-placed outdoor unit.
We check cold-day output for hill weather, position for sound and boundaries, and design the radiators, hot water and controls around it.
Explore air-source heat pumpsGround source, where the land allows.
In the colder winters around the Bannau, ground source earns its keep: the ground stays temperate when the air doesn't.
With a paddock, field or drilling access, our in-house rigs put in trenches or boreholes sized for your home — collector and heating system designed as one.
A road divided the site — the design worked with it.
At Farmers' Welsh Lavender, the office and farmhouse sit on opposite sides of a public road.
Rather than force one trench arrangement across the tarmac, we drilled vertical boreholes and installed two independent ground-source systems — heating and hot water for both buildings, each with its own plant. Design, drilling and installation, all from one team.
Read the Farmers' Welsh Lavender storyA clear route through the whole project.
The first step takes a couple of minutes. The detail arrives only when your home needs it.
Estimate
Tell us about the property and its current heating — free, online, quick.
Survey & design
We measure the home and design the complete system around it.
Proposal & funding
One clear proposal — system, scope, cost and the grant route, sorted with you.
Install & commission
Our own crews drill, install and commission — then show you how it all works.
Support
Servicing and Comfort Care, for as long as you want us looking after it.
In the National Park? We check the planning for you.
Many installations are permitted development, but National Park, conservation-area and listed-building rules can change the route — and the answer depends on your exact address. It's part of every Brecon survey.
Off oil or LPG, the sums usually work hardest.
Most Brecon-area homes heat with oil, LPG or electric — the expensive fuels. That's exactly where a well-designed heat pump makes the biggest difference to bills.
What you pay today.
Current fuel, hot-water use and how the house is run — the honest baseline for comparison.
What the design delivers.
Seasonal efficiency, water temperatures, controls and tariff — modelled for your home, not a national average.
Grant help, handled with you.
You may qualify for the Boiler Upgrade Scheme — we handle the application, and finance can spread the rest.
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.
Experience before installation. Support after handover.
20+ years of heat pumps, 4,000+ systems installed and our own drilling rigs — many of those systems in rural mid-Wales homes just like Brecon's.
Afterwards, annual servicing and remote monitoring keep the system honest — with a team an hour away, not a national call queue.
Things Brecon homeowners ask us.
Straight answers — and where the honest answer is "it depends on your house", we say what it depends on.
Can a heat pump work in an older stone house?
Yes — some of our favourite installations are in exactly these homes. We measure heat loss room by room, check the radiators and design for the building you have, thick walls and all.
Air source or ground source near Brecon?
Air source is simpler; ground source loves the colder winters up here, because the ground stays temperate when the air doesn't. Land, access and heat demand decide it — the survey settles which.
Will it beat oil or LPG on bills?
Usually, yes — replacing expensive fuels is where heat pumps shine. We'll show you the numbers for your own house before you commit to anything.
Do I need planning permission in the National Park?
Often not, but Park, listed-building and conservation rules can change the route. We check your exact address as part of the survey.
Do I need underfloor heating?
Not necessarily. Existing radiators often work — sometimes one or two need resizing. We check output room by room before recommending anything.
What happens after the online estimate?
We review your details, arrange a survey if it looks promising, and come back with a full proposal — system, cost and grant route. No obligation at any step.
Brecon, the Bannau and beyond.
Brecon, Builth Wells, Hay-on-Wye, Crickhowell, Talgarth, Sennybridge, Llanwrtyd Wells, Rhayader and Llandrindod Wells — plus the villages and farms across the Bannau Brycheiniog National Park.
For the wider county, see our Powys page — or see everywhere we work.
Planning a heat pump near Brecon?
Start with a free online estimate — or for farms, visitor businesses and estates, send us the site and we'll talk it through.