Quick answer
Grant towards replacing fossil-fuel heating with heat pumps or biomass boilers in eligible English and Welsh properties. UK government grant for replacing fossil-fuel heating systems with heat pumps or biomass boilers in eligible English and Welsh properties, including small non-domestic premises within scheme rules. It is aimed at Owners of eligible properties (rules limit capacity and property type). Eligibility typically requires Eligible English and Welsh properties as defined by Ofgem under scheme rules. Property type
Advisor summary
Boiler Upgrade Scheme (Non-domestic — small businesses) is a grant. UK government grant for replacing fossil-fuel heating systems with heat pumps or biomass boilers in eligible English and Welsh properties, including small non-domestic premises within scheme rules. Based on the published criteria, Boiler Upgrade Scheme (Non-domestic — small businesses) is most relevant to any businesses; organisations working in Life Sciences, Manufacturing, Creative Industries, Agriculture & Food; applicants based in Wales, England. It typically supports activities aligned with Net Zero & Sustainability — applications that demonstrate a clear, evidenced link to one of these objectives tend to score better against the published assessment framework. Eligibility focus: Eligible English and Welsh properties as defined by Ofgem under scheme rules. Property type and capacity restrictions apply. Boiler Upgrade Scheme (Non-domestic — small businesses) is most useful when you need non-repayable funding for a defined project with clear outputs. If your situation does not match that profile, the Alternative Routes section below lists more suitable options before you commit time to an application. Before applying, confirm the scheme is currently open on the official source page — funding amounts, deadlines and round-by-round priorities for Boiler Upgrade Scheme (Non-domestic — small businesses) can change between calls.
Key takeaways
- Funding type: grant.
- Target stage: any.
- Geographic coverage: Wales, England.
- Aligned to objectives such as Net Zero & Sustainability.
- Industry relevance: Life Sciences, Manufacturing, Creative Industries, Agriculture & Food.
- Always validate live eligibility and timing on the official source before applying.
Who this is for
Boiler Upgrade Scheme (Non-domestic — small businesses) is most relevant to: - any businesses that match the published stage definition - organisations operating in Life Sciences, Manufacturing, Creative Industries, Agriculture & Food - applicants based in Wales, England - teams whose planned activity advances Net Zero & Sustainability - organisations that can evidence eligibility, deliverability and value-for-money against the scheme's published criteria Use the eligibility section above to validate fit before applying.
Real-world use cases
- Net Zero & Sustainability projects seeking grant support consistent with the published scope of Boiler Upgrade Scheme (Non-domestic — small businesses).
- Life Sciences businesses where the planned activity matches the eligible activity list and can be delivered within the scheme's reporting window.
- Manufacturing businesses where the planned activity matches the eligible activity list and can be delivered within the scheme's reporting window.
- Projects delivered in Wales, England where the applicant is registered and trading in the eligible geography.
What to prepare
- Read the official guidance end-to-end and note every mandatory criterion.
- Confirm the current round is open and check the live deadline on the official source.
- Pull recent management accounts and statutory financials covering the requested period.
- Draft a clear project description: problem, approach, milestones, outputs.
- Prepare a defensible budget that ties each cost line to a project milestone.
- Identify and brief any partners, suppliers or supporting referees in advance.
- Leave time for internal review and sign-off before submission.
- Capture the assumptions behind any quantitative claims (jobs created, emissions saved, additional R&D spend) so they can be defended at assessment.
Common mistakes
- Treating the application as a marketing exercise rather than evidencing eligibility against the published criteria.
- Submitting without independently verifying the live deadline and current call status on the official source page.
- Underestimating the time required to gather match-funding evidence and supporting letters.
- Vague project descriptions that fail to spell out outputs, milestones and a credible delivery plan.
- Weak budget breakdowns that mix capital and revenue costs without justification.
- Failing to make the connection to Net Zero & Sustainability explicit — assessors should not have to infer how Boiler Upgrade Scheme (Non-domestic — small businesses) fits the project.
Why applications get rejected
- Project falls outside the published scope, theme or eligible activities.
- Applicant organisation type or location is not eligible under the call.
- Insufficient evidence of match funding or co-investment where required.
- Project plan, milestones or budget lack the detail assessors need to score against the criteria.
- Limited evidence of impact, additionality or value for money.
- Applicant or project location does not satisfy the geographic eligibility for Boiler Upgrade Scheme (Non-domestic — small businesses) (Wales, England).
Alternative funding routes
- Consider related grant routes such as ATI Sustainable Aviation Demonstrators, West of England Green Business Grant, West Yorkshire Net Zero Business Grant — see the Related grants section for direct links.
- Use side-by-side comparisons such as Innovate UK Smart Grants vs Innovate UK Innovation Loans and Start Up Loans vs Angel Investment to weigh Boiler Upgrade Scheme (Non-domestic — small businesses) against the closest alternatives before committing.
- The decision guides What should UK startups apply for first? and Am I too early for Innovate UK Smart Grants? walk through the trade-offs in plain English.
- Schemes targeting Net Zero & Sustainability from other providers may offer complementary or fallback coverage if Boiler Upgrade Scheme (Non-domestic — small businesses) is not a fit this round.
- If grant funding is not a fit, debt or equity routes may be appropriate — review the Pathways section for a structured comparison.
Typical funding journey
- 1Discovery — confirm the scheme is open and you fit the published scope.
- 2Eligibility check — work through the criteria honestly and gather evidence of fit.
- 3Scoping — define the project, outputs, milestones and a defensible budget.
- 4Documentation — assemble financials, letters of support and any required quotes.
- 5Submission — complete the official application form against the assessor criteria.
- 6Assessment — respond promptly to clarification requests during review.
- 7Decision and grant agreement — accept the offer and meet pre-payment conditions.
Frequently asked questions
Who is eligible to apply for Boiler Upgrade Scheme (Non-domestic — small businesses)?
Boiler Upgrade Scheme (Non-domestic — small businesses) is aimed at businesses across most stages. It is available to applicants in Wales, England. Industry focus areas include Life Sciences, Manufacturing, Creative Industries, Agriculture & Food, Retail & Hospitality. Always confirm the live eligibility criteria on the official source page before applying — eligibility rules can change between rounds.
What does Boiler Upgrade Scheme (Non-domestic — small businesses) fund?
As a grant scheme, Boiler Upgrade Scheme (Non-domestic — small businesses) typically supports activities consistent with its published objectives (Net Zero & Sustainability). Specific eligible costs and project types are defined in the scheme's published guidance — review the official source page for the current list.
How competitive is Boiler Upgrade Scheme (Non-domestic — small businesses)?
Published competitiveness figures vary by round and are not always disclosed. Treat any scheme with limited published cost as competitive: prepare as if you were one of many strong applicants, and lean on the assessment criteria when building your application.
What preparation is needed before applying to Boiler Upgrade Scheme (Non-domestic — small businesses)?
Start by reading the official guidance end-to-end and mapping your project against each assessment criterion. Pull together core supporting evidence early — typically organisation details, recent financials, a clear project description, milestones and a budget. Leave time for internal review and, where relevant, partner or advisor sign-off before submission.
What documents are usually required for Boiler Upgrade Scheme (Non-domestic — small businesses)?
Most schemes ask for organisation details, recent financial information, a project description with milestones, and a budget breakdown. Always check the official source page for the definitive document list for the current round.
What alternatives exist if Boiler Upgrade Scheme (Non-domestic — small businesses) is not a fit?
The Alternative Routes section above lists related funding paths. As a general rule, look for schemes targeting the same objective or stage from different providers, and consider blending sources (for example combining a grant with a loan or equity) where the project size warrants it.
How do you apply for Boiler Upgrade Scheme (Non-domestic — small businesses)?
Application routing is set out on the official source page linked above — confirm the current round is open before starting an application.
When should you start preparing for Boiler Upgrade Scheme (Non-domestic — small businesses)?
Treat preparation as a multi-week process for most schemes. Begin gathering financials, project documentation and supporting evidence as soon as you decide to apply — leaving preparation to the final week typically shows in the quality of the application.
What happens after you apply to Boiler Upgrade Scheme (Non-domestic — small businesses)?
Applications are typically logged, screened for eligibility, then assessed against the published criteria. Be ready to respond quickly to clarification requests during review, and keep contact details up to date so decision notifications are not missed.
Can Boiler Upgrade Scheme (Non-domestic — small businesses) be combined with other funding or support?
Many public grants impose subsidy-control limits and require disclosure of other public support received in the past three years. Read the scheme's published rules on combined funding before committing — the answer changes case-by-case.
What should applicants do before applying to Boiler Upgrade Scheme (Non-domestic — small businesses)?
Validate that Boiler Upgrade Scheme (Non-domestic — small businesses) is genuinely the best fit — the Alternative Routes section above lists other options worth comparing first. Re-read the official guidance and map your project, organisation and budget to each scoring criterion. Walk through the Eligibility section line by line and gather evidence for every requirement. Speak to anyone in your network who has been through this scheme recently — round-by-round priorities and assessor focus shift.
What makes a strong application to Boiler Upgrade Scheme (Non-domestic — small businesses)?
Strong Boiler Upgrade Scheme (Non-domestic — small businesses) applications evidence fit against every published criterion rather than restating the project's ambition. Use concrete numbers, dated milestones and named partners wherever possible — assessors reward specificity. Make the link to Net Zero & Sustainability explicit; do not leave assessors to infer it. Show that the project would not happen — or would happen later or smaller — without this funding (the 'additionality' test).
When might another funding route be more suitable than Boiler Upgrade Scheme (Non-domestic — small businesses)?
If your project needs flexible working capital, fast decisions, or covers costs outside the published scope, a loan or equity route is usually a better fit. See the Alternative Routes section above for specific suggestions.
What happens after Boiler Upgrade Scheme (Non-domestic — small businesses) is awarded?
Funded organisations typically sign a grant or facility agreement that sets out drawdown conditions, reporting cadence and any claw-back triggers. Plan for periodic progress reports, evidence of spend and — for larger awards — independent monitoring or audit. Most public funders require you to retain underlying records for several years in case of audit.
How should organisations prepare supporting evidence for Boiler Upgrade Scheme (Non-domestic — small businesses)?
Gather evidence in the order assessors will read it: organisation legitimacy first, then eligibility, then project fit, then budget and impact. Even where a document list is not published, prepare financials, a project plan with milestones, and budget evidence as a baseline. Where claims are quantitative (job creation, emissions reduction, additional R&D spend), document the assumption behind each number.
Funding amount
Varies
Region
Wales, England
Stage
Any stage
Provider
Ofgem (on behalf of UK Government)
Advisor summary
Boiler Upgrade Scheme (Non-domestic — small businesses) is a grant. UK government grant for replacing fossil-fuel heating systems with heat pumps or biomass boilers in eligible English and Welsh properties, including small non-domestic premises within scheme rules. Based on the published criteria, Boiler Upgrade Scheme (Non-domestic — small businesses) is most relevant to any businesses; organisations working in Life Sciences, Manufacturing, Creative Industries, Agriculture & Food; applicants based in Wales, England. It typically supports activities aligned with Net Zero & Sustainability — applications that demonstrate a clear, evidenced link to one of these objectives tend to score better against the published assessment framework. Eligibility focus: Eligible English and Welsh properties as defined by Ofgem under scheme rules. Property type and capacity restrictions apply. Boiler Upgrade Scheme (Non-domestic — small businesses) is most useful when you need non-repayable funding for a defined project with clear outputs. If your situation does not match that profile, the Alternative Routes section below lists more suitable options before you commit time to an application. Before applying, confirm the scheme is currently open on the official source page — funding amounts, deadlines and round-by-round priorities for Boiler Upgrade Scheme (Non-domestic — small businesses) can change between calls.
Key takeaways
- Funding type: grant.
- Target stage: any.
- Geographic coverage: Wales, England.
- Aligned to objectives such as Net Zero & Sustainability.
- Industry relevance: Life Sciences, Manufacturing, Creative Industries, Agriculture & Food.
- Always validate live eligibility and timing on the official source before applying.
Who this is for
Boiler Upgrade Scheme (Non-domestic — small businesses) is most relevant to: - any businesses that match the published stage definition - organisations operating in Life Sciences, Manufacturing, Creative Industries, Agriculture & Food - applicants based in Wales, England - teams whose planned activity advances Net Zero & Sustainability - organisations that can evidence eligibility, deliverability and value-for-money against the scheme's published criteria Use the eligibility section above to validate fit before applying.
What to prepare before applying
- 1
Read the official guidance end-to-end and note every mandatory criterion.
- 2
Confirm the current round is open and check the live deadline on the official source.
- 3
Pull recent management accounts and statutory financials covering the requested period.
- 4
Draft a clear project description: problem, approach, milestones, outputs.
- 5
Prepare a defensible budget that ties each cost line to a project milestone.
- 6
Identify and brief any partners, suppliers or supporting referees in advance.
- 7
Leave time for internal review and sign-off before submission.
- 8
Capture the assumptions behind any quantitative claims (jobs created, emissions saved, additional R&D spend) so they can be defended at assessment.
Common mistakes
Treating the application as a marketing exercise rather than evidencing eligibility against the published criteria.
Submitting without independently verifying the live deadline and current call status on the official source page.
Underestimating the time required to gather match-funding evidence and supporting letters.
Vague project descriptions that fail to spell out outputs, milestones and a credible delivery plan.
Weak budget breakdowns that mix capital and revenue costs without justification.
Failing to make the connection to Net Zero & Sustainability explicit — assessors should not have to infer how Boiler Upgrade Scheme (Non-domestic — small businesses) fits the project.
Common rejection reasons
Project falls outside the published scope, theme or eligible activities.
Applicant organisation type or location is not eligible under the call.
Insufficient evidence of match funding or co-investment where required.
Project plan, milestones or budget lack the detail assessors need to score against the criteria.
Limited evidence of impact, additionality or value for money.
Applicant or project location does not satisfy the geographic eligibility for Boiler Upgrade Scheme (Non-domestic — small businesses) (Wales, England).
Alternative funding routes
Consider related grant routes such as ATI Sustainable Aviation Demonstrators, West of England Green Business Grant, West Yorkshire Net Zero Business Grant — see the Related grants section for direct links.
Use side-by-side comparisons such as Innovate UK Smart Grants vs Innovate UK Innovation Loans and Start Up Loans vs Angel Investment to weigh Boiler Upgrade Scheme (Non-domestic — small businesses) against the closest alternatives before committing.
The decision guides What should UK startups apply for first? and Am I too early for Innovate UK Smart Grants? walk through the trade-offs in plain English.
Schemes targeting Net Zero & Sustainability from other providers may offer complementary or fallback coverage if Boiler Upgrade Scheme (Non-domestic — small businesses) is not a fit this round.
If grant funding is not a fit, debt or equity routes may be appropriate — review the Pathways section for a structured comparison.
Eligibility
Eligible English and Welsh properties as defined by Ofgem under scheme rules. Property type and capacity restrictions apply.
Evidence you'll need
Quote from a MCS-certified installer who applies on the owner's behalf.
Application timeline
Installer applies via Ofgem and redeems voucher after install.
Common reasons applications fail
Property not eligible, system above capacity cap, not MCS-certified.
What happens next
MCS installer submits voucher application; grant is deducted from the bill.
Eligibility Quick Check
A cautious, rules-based check using only the criteria already published for this programme. Not a guarantee — always verify against the official source.
Frequently asked questions
- Who is eligible to apply for Boiler Upgrade Scheme (Non-domestic — small businesses)?
- Boiler Upgrade Scheme (Non-domestic — small businesses) is aimed at businesses across most stages. It is available to applicants in Wales, England. Industry focus areas include Life Sciences, Manufacturing, Creative Industries, Agriculture & Food, Retail & Hospitality. Always confirm the live eligibility criteria on the official source page before applying — eligibility rules can change between rounds.
- What does Boiler Upgrade Scheme (Non-domestic — small businesses) fund?
- As a grant scheme, Boiler Upgrade Scheme (Non-domestic — small businesses) typically supports activities consistent with its published objectives (Net Zero & Sustainability). Specific eligible costs and project types are defined in the scheme's published guidance — review the official source page for the current list.
- How competitive is Boiler Upgrade Scheme (Non-domestic — small businesses)?
- Published competitiveness figures vary by round and are not always disclosed. Treat any scheme with limited published cost as competitive: prepare as if you were one of many strong applicants, and lean on the assessment criteria when building your application.
- What preparation is needed before applying to Boiler Upgrade Scheme (Non-domestic — small businesses)?
- Start by reading the official guidance end-to-end and mapping your project against each assessment criterion. Pull together core supporting evidence early — typically organisation details, recent financials, a clear project description, milestones and a budget. Leave time for internal review and, where relevant, partner or advisor sign-off before submission.
- What documents are usually required for Boiler Upgrade Scheme (Non-domestic — small businesses)?
- Most schemes ask for organisation details, recent financial information, a project description with milestones, and a budget breakdown. Always check the official source page for the definitive document list for the current round.
- What alternatives exist if Boiler Upgrade Scheme (Non-domestic — small businesses) is not a fit?
- The Alternative Routes section above lists related funding paths. As a general rule, look for schemes targeting the same objective or stage from different providers, and consider blending sources (for example combining a grant with a loan or equity) where the project size warrants it.
- How do you apply for Boiler Upgrade Scheme (Non-domestic — small businesses)?
- Application routing is set out on the official source page linked above — confirm the current round is open before starting an application.
- When should you start preparing for Boiler Upgrade Scheme (Non-domestic — small businesses)?
- Treat preparation as a multi-week process for most schemes. Begin gathering financials, project documentation and supporting evidence as soon as you decide to apply — leaving preparation to the final week typically shows in the quality of the application.
- What happens after you apply to Boiler Upgrade Scheme (Non-domestic — small businesses)?
- Applications are typically logged, screened for eligibility, then assessed against the published criteria. Be ready to respond quickly to clarification requests during review, and keep contact details up to date so decision notifications are not missed.
- Can Boiler Upgrade Scheme (Non-domestic — small businesses) be combined with other funding or support?
- Many public grants impose subsidy-control limits and require disclosure of other public support received in the past three years. Read the scheme's published rules on combined funding before committing — the answer changes case-by-case.
- What should applicants do before applying to Boiler Upgrade Scheme (Non-domestic — small businesses)?
- Validate that Boiler Upgrade Scheme (Non-domestic — small businesses) is genuinely the best fit — the Alternative Routes section above lists other options worth comparing first. Re-read the official guidance and map your project, organisation and budget to each scoring criterion. Walk through the Eligibility section line by line and gather evidence for every requirement. Speak to anyone in your network who has been through this scheme recently — round-by-round priorities and assessor focus shift.
- What makes a strong application to Boiler Upgrade Scheme (Non-domestic — small businesses)?
- Strong Boiler Upgrade Scheme (Non-domestic — small businesses) applications evidence fit against every published criterion rather than restating the project's ambition. Use concrete numbers, dated milestones and named partners wherever possible — assessors reward specificity. Make the link to Net Zero & Sustainability explicit; do not leave assessors to infer it. Show that the project would not happen — or would happen later or smaller — without this funding (the 'additionality' test).
- When might another funding route be more suitable than Boiler Upgrade Scheme (Non-domestic — small businesses)?
- If your project needs flexible working capital, fast decisions, or covers costs outside the published scope, a loan or equity route is usually a better fit. See the Alternative Routes section above for specific suggestions.
- What happens after Boiler Upgrade Scheme (Non-domestic — small businesses) is awarded?
- Funded organisations typically sign a grant or facility agreement that sets out drawdown conditions, reporting cadence and any claw-back triggers. Plan for periodic progress reports, evidence of spend and — for larger awards — independent monitoring or audit. Most public funders require you to retain underlying records for several years in case of audit.
- How should organisations prepare supporting evidence for Boiler Upgrade Scheme (Non-domestic — small businesses)?
- Gather evidence in the order assessors will read it: organisation legitimacy first, then eligibility, then project fit, then budget and impact. Even where a document list is not published, prepare financials, a project plan with milestones, and budget evidence as a baseline. Where claims are quantitative (job creation, emissions reduction, additional R&D spend), document the assumption behind each number.
Industries
Objectives