Air Source Heat Pump Installation Devon
From cob farmhouses to modern estates, sized properly
We install air source heat pumps across Devon for homes moving away from oil, LPG, gas or storage heaters. Our MCS certified engineers survey every room, design the system around your house, and apply for the Boiler Upgrade Scheme grant so it comes straight off the price.
Air source heat pump installation in Devon
Air source heat pump installation in Devon covers homes from the suburbs of Exeter to the villages along the North Devon Link Road towards Barnstaple. Large parts of the county have never had mains gas, and the Boiler Upgrade Scheme statistics show more than 3,300 grants paid across the county council area between May 2022 and September 2026. If you're in a cob cottage on the edge of Dartmoor, the walls are thick, breathable and easily damaged by heavy fixings, so we usually set the outdoor unit on its own ground plinth and keep holes in the wall to a minimum. Along the A38 Devon Expressway, newer, well-insulated homes tend to be the simplest installs.
We fit air source heat pumps from the South Hams and the Teign valley up to Okehampton, Holsworthy and the edge of Exmoor.
- Exeter
- Crediton
- Tiverton
- Cullompton
- Honiton
- Sidmouth
- Newton Abbot
- Ashburton
- Totnes
- Kingsbridge
- Dartmouth
- Tavistock
- Okehampton
- Chagford
- Moretonhampstead
- Barnstaple
- Bideford
- Holsworthy
- South Molton
Heat pump work we see most across the moors and valleys
Homes inside the National Parks
Dartmoor and Exmoor are protected landscapes, and the permitted development rules are tighter for outdoor units on walls facing a road. We look at the back or side of the house first and keep the unit low and screened. If an application is needed, we'll explain the route at the survey.
Replacing the heating side of a Rayburn
Plenty of farmhouses heat the house from an oil-fired Rayburn in the kitchen. A heat pump can take over the radiators and hot water, while the range stays as a cooker or is swapped for an electric model. It lets you run the range less in summer.
Cavity-walled houses in market towns
Bungalows and 1970s to 90s homes in towns such as Tiverton and Honiton tend to have cavity walls and loft insulation already. They're often the easiest switch: modest heat loss, room for a cylinder and space for the outdoor unit. Some radiators may still need upsizing.
Preparing an older home before the switch
A heat pump runs best in a house that keeps its heat. Before the survey, deal with the cheap things: draught-proofing doors and windows, topping up loft insulation and fixing any obvious leaks. In cob or stone homes, use breathable materials, as the wrong insulation can trap damp in the walls.
The summer is the best time for an install, as you won't miss the heating while the system is changed. Book the survey in spring if you want to be ready for autumn. We'll need to find space for a cylinder, so clear the airing cupboard or think about a utility corner. If the house has an older open-vent system, we'll check the pipework is big enough to carry the higher flow rates a heat pump needs.
On a farm or large plot, we may suggest a ground source system as well. Our page on air source heat pump installation explains what the job involves from survey to handover.
Why choose Wisp for air source heat pump installation in Devon
Moorland homes need honest sizing
A granite farmhouse up near Chagford sits higher and colder than a bungalow in Tiverton. The heat loss survey accounts for that, so the unit isn't caught short in February.
Grant taken off upfront
£7,500 off your quote, or £9,000 until March 2027 if the house runs on oil or LPG with no mains gas. We handle the application.
Thatch and listed homes
Listed buildings fall outside permitted development, so a heat pump needs consent. We talk you through it before you spend anything on design.
Hot water sorted
Coming off a combi or a range cooker? We find a home for the cylinder, often an old airing cupboard, and size it for your household.
How air source heat pump installation in Devon works
Tell us about your home
Start with the quote tool.
Survey and design
We measure every room and design the system to your heat loss.
Grant and quote
You get a fixed quote and we help with the grant paperwork.
Install and handover
We fit, commission and show you how to run it efficiently.
What is included
- Room-by-room heat loss calculation
- System design and sizing
- Outdoor unit, cylinder and controls fitted
- Radiator upgrades where needed
- Commissioning and MCS certificate
- Boiler Upgrade Scheme application support
Air Source Heat Pump Installation Devon FAQs
Will a heat pump work in a cob cottage?
Often, yes, with care. Cob holds heat well once it's warm, which suits the steady, low temperature a heat pump gives. The bigger questions are draughts, the floor and how many radiators need upsizing. We'll be honest if the house needs work first.
Do I need planning permission for the outdoor unit?
On most houses, no, as long as it meets the permitted development conditions and passes the noise calculation. Listed buildings always need consent, and conservation areas restrict units facing the road. Our planning permission guide has the detail.
I'm on oil. Is a heat pump cheaper to run?
It can be, but it depends on your oil price, your electricity tariff and how well the system is designed. We won't promise savings without seeing the house. Our guide on oil boilers vs heat pumps sets out the trade-offs.
What does it cost before the grant?
Government data puts the typical installation in mid-2026 at around £12,800, but big old farmhouses can cost a lot more. See our heat pump cost page, then let us survey for a fixed price.
Can a heat pump replace the heating side of my oil-fired Rayburn?
Yes. The heat pump takes over the radiators and hot water, and the Rayburn can stay as a cooker or be replaced. We look at the pipework that links the two, as some farmhouses have tangled old systems. The quote shows which parts change and which can stay.
Air source heat pump installation in your area
- Air source heat pump installation Cornwall
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Air source heat pump installation across Devon
For expert air source heat pump installation in Devon
A few questions about your home, then a free survey and one fixed price.