Heat Pump Installers in Cornwall
We list 36 heat pump installer businesses with a business address in Cornwall. 30 of them (83%) are recorded as registered for the Boiler Upgrade Scheme. Confirm current status before relying on a grant. Air source appears on every record; exhaust air appear on some. Confirm with each firm. Helston, Truro and St Austell have the biggest clusters.
Grants in England
£7,500 off a heat pump in Cornwall
£9,000 for eligible off-gas-grid oil/LPG replacements with air-to-water or ground-source heat pumps until 31 March 2027.
- £7,500 off an air-to-water or ground/water source heat pump, £2,500 off air-to-air, £5,000 off a biomass boiler.
- £9,000 for an eligible off-gas-grid property replacing oil or LPG with an air-to-water or ground-source heat pump — from 21 July 2026 to 31 March 2027. Other fuels and air-to-air do not get this uplift.
- Your MCS-certified installer applies and takes the grant off the quote up front. You never receive the money yourself.
- No valid EPC needed since 28 April 2026: where there isn't one, your installer supplies a utility bill or fuel receipt from the last three months plus photos of the existing heating.
On a lower income? The Warm Homes: Local Grant is council-run and fully funded for homes rated EPC D to G where household income is usually £36,000 or less.
36 installers in Cornwall
Recorded BUS registration first, then most reviewed; verify current status
Towns in Cornwall
Where the installers in Cornwall are based. Towns with three or more firms have their own page.
Heat pump guides for Cornwall
What a heat pump costs, which grant applies and how to compare quotes, from the directory's own guides.
- Do You Need an MCS Installer to Claim a Heat Pump Grant?
Find out whether MCS certification is required to claim the £7,500 BUS grant and other UK heat pump grants, and what you risk by using a non-MCS installer.
- Can You Get a Heat Pump Grant If You Receive Benefits?
On benefits and wondering if you qualify for a heat pump grant? You're likely eligible for more than just ECO4. Here's every scheme mapped to your benefit type.
- Heat Pump Subsidies Could Be Cut to Fund Defence Spending
Reports suggest heat pump grants could be cut to fund defence. Here's what UK homeowners should do right now to lock in the £7,500 BUS grant before any changes.
- Heat Pump Grants in Scotland 2026 — Home Energy Scotland
Scottish homeowners can stack Home Energy Scotland loans and cashback with the £7,500 BUS grant. Here's exactly how much you can get and how to apply in 2026.
Heat pump questions in Cornwall
- How many heat pump installers are there in Cornwall?
- 36 installer listings have a business address in Cornwall; 30 are recorded as registered for the Boiler Upgrade Scheme. They cluster in Helston (7), Truro (4) and St Austell (3). Check each firm's current MCS and Ofgem status before relying on a grant.
- Can I get the Boiler Upgrade Scheme grant in Cornwall?
- Yes. Cornwall is in England, where eligible properties can receive £7,500 for an air-to-water or ground-source heat pump (£2,500 for air-to-air; £5,000 for biomass). An MCS-certified, Ofgem-registered installer applies and deducts an approved grant from the quote. The £9,000 uplift from 21 July 2026 to 31 March 2027 is only for eligible off-gas-grid homes replacing oil or LPG with air-to-water or ground-source heat pumps. Lower-income households in England may also qualify for the council-run Warm Homes: Local Grant, subject to its separate rules.
- What types of heat pump do installers in Cornwall fit?
- All records in Cornwall list air source; 7 also list exhaust air. Ask each firm to confirm its current technology scope and whether a system suits your home.
- How do I choose between heat pump installers in Cornwall?
- 31 of the 36 have Google reviews shown on their listing; NSN Electrical Ltd has the most with 130. 1 has claimed ownership of their listing. Ask firms if they serve your postcode, check current certification and BUS registration, and compare itemised quotes after a heat-loss survey.
- Do I need an EPC to get a heat pump grant in Cornwall?
- Not any more. Since 28 April 2026 a valid EPC is no longer required to apply for the Boiler Upgrade Scheme. If your home doesn't have one, your installer instead supplies a utility bill or fuel receipt dated within the last three months plus photographs of the existing heating system. (The council-run Warm Homes: Local Grant in England still uses the EPC — it's for homes rated D to G.)
- Can installers from outside Cornwall do my install?
- Some installers based in Devon may serve Cornwall. Business address does not establish service coverage, so ask each firm whether it surveys and supports homes in your postcode.
Neighbouring counties
Firms based nearby may cover your postcode; ask each one about surveys and aftercare.
Ready to get in touch?
Check each firm's current MCS status, service area and available contact route. 30 have Boiler Upgrade Scheme registration on record; confirm current status before relying on a grant.
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