Air source heat pumps installed across Exeter and Devon, with the £7,500 Boiler Upgrade Scheme grant taken straight off your quote.
An air source heat pump pulls heat out of the outside air and uses it to warm your radiators and your hot water. It runs on electricity rather than gas or oil, and on a well designed system it will produce three or four units of heat for every unit of electricity it uses.
The government's Boiler Upgrade Scheme puts £7,500 towards an air-to-water heat pump in England and Wales. You do not apply for it yourself. The installer applies to Ofgem on your behalf and takes the money off the quote before you pay a penny, so the number you see is the number after the grant.
SWW installs heat pumps across Exeter and Devon under an MCS umbrella scheme, alongside our MCS certified partner. They handle the system design, the commissioning and the grant paperwork. We carry out the installation. Between us you get a fully MCS certified installation and the full grant, with one point of contact throughout.
Anyone who tells you otherwise is going to disappoint you later.
Heat pumps run at a lower flow temperature than a gas boiler. Some radiators will need upsizing to give off the same heat. We work that out at survey rather than discovering it halfway through.
A proper heat loss calculation for the actual building. Undersize it and the house is cold. Oversize it and you have paid for capacity you never use.
Electricity costs roughly four times what gas does per unit. A heat pump only saves you money if it is running efficiently, which comes down to design and controls.
If a property is very leaky and cannot take the radiator work, we will say so. We would rather tell you at survey than take the job and leave you cold.
Devon has a lot of properties that were never connected to mains gas, running on oil or LPG. Those are the houses where a heat pump makes the strongest case, because oil is expensive and the boiler needs a tank and a delivery lorry.
From 21 July 2026 the grant for eligible off-gas-grid properties replacing oil or LPG heating rises to £9,000. If that is your house, it is worth reading our guide to swapping an oil boiler for a heat pump before you commit to another oil boiler that will still be there in 2040.
It depends on the size of the property and how much radiator work is needed, so we survey before quoting. The Boiler Upgrade Scheme takes £7,500 off the price of an eligible air-to-water heat pump, and the installer deducts it from your invoice rather than you claiming it back. From 21 July 2026 that rises to £9,000 for eligible off-gas-grid properties currently on oil or LPG.
Heat pump installations have to be MCS certified for the Boiler Upgrade Scheme grant to apply. We work under an MCS umbrella scheme with our MCS certified partner, who carries out the system design, the commissioning and the grant application to Ofgem. We do the installation. You get a fully certified installation, the full grant, and one number to ring.
Almost certainly, yes, if you are coming off a combi boiler. A heat pump heats water more gently over a longer period, so it needs a cylinder to store it in. We size that as part of the survey.
Some of them, usually. A heat pump runs at a lower flow temperature than a gas boiler, so a radiator that was fine at 70 degrees may not give off enough heat at 45. We measure the heat loss room by room and tell you which ones need to grow.
Yes. They work down well below freezing, which is why they are standard across Scandinavia. Efficiency drops in very cold weather, but a system designed properly for the building will still heat the house on the coldest day of a Devon winter.
The outdoor unit makes about as much noise as a fridge. Siting matters, and we will talk through where it goes so it is not under a bedroom window.
Your property needs to be in England or Wales, owned by you, with a valid EPC, and you must be replacing a fossil fuel system such as a gas, oil, LPG or direct electric heating. Properties that already have a heat pump do not qualify. We check all of it before quoting.
Still on gas? New boilers fitted at a fixed price by Gas Safe registered engineers.
F-Gas qualified installation of air-to-air systems that cool in summer and heat in winter.
Annual servicing, repairs and breakdowns across Exeter and Devon.
