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Boiler Upgrade Scheme (England and Wales)
Capital grants to replace fossil-fuel heating systems with eligible low-carbon heat technologies in England and Wales.
Region scope: England and Wales
Key Facts
Quick extraction-ready facts
- Support type
- Upfront voucher grant via MCS installer route
- Typical target systems
- Air source heat pumps, ground source heat pumps, biomass (eligible cases)
- Geography
- England and Wales only
Last verified
February 21, 2026
Verification date updates only after human editorial review.
Eligibility checklist
- Property must meet scheme and technology requirements.
- Work must be completed by an eligible installer.
- Existing fossil-fuel heating replacement is typically expected.
Steps to apply
- Confirm your property and heating setup qualify.
- Select an MCS-certified installer and quote.
- Installer applies for the voucher and completes works after approval.
Required documents
- Property and applicant identity details.
- Installer-provided quotation and system details.
- Evidence needed by the installer for voucher application.
Value and benefit
BUS can significantly reduce upfront replacement costs when eligibility and installer pathway requirements are met.
Common pitfalls
- Starting works before voucher approval can risk ineligibility.
- Assuming all property types and technologies are covered without checking.
Alternatives
- Regional retrofit grants or local authority support.
- Supplier finance combined with non-scheme upgrades.
Official sources
Change log
-
February 21, 2026 - Refreshed eligibility summary and source links after editorial verification.
Editorial notes
BUS is one of the most relevant UK heating replacement pathways for homeowners and landlords replacing eligible fossil systems.
Always confirm current grant levels, exclusions, and installer requirements on the official source before committing funds.
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