We list 38 heat pump installer businesses with a business address in East Sussex. 33 of these listings (87%) show Boiler Upgrade Scheme registration. Confirm it with the installer and Ofgem before accepting a quote. All records list air source heat pumps and some also list exhaust air and ground source systems; check current scope. Most are in Brighton, Eastbourne and Hove.
Grants in England
£9,000 for eligible off-gas-grid oil/LPG replacements with air-to-water or ground-source heat pumps until 31 March 2027.
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.
Recorded BUS registration first, then most reviewed; verify current status
Where the installers in East Sussex are based. Towns with three or more firms have their own page.
What a heat pump costs, which grant applies and how to compare quotes, from the directory's own guides.
Find MCS certified heat pump installers across London, Brighton and Surrey. Regional grant info, conservation area advice and real costs for South East homeowners in 2026.
Find MCS certified heat pump installers in Brighton. Learn how the £7,500 BUS grant works, what Brighton's housing stock means for your install, and get real costs.
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.
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.
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. 33 have Boiler Upgrade Scheme registration on record; confirm current status before relying on a grant.
All counties · Boiler Upgrade Scheme guide · Every UK heat pump grant · Heat pump guides