Need £7,500 off a heat pump? The application process is 8 weeks, not 8 months. Your installer handles the paperwork. You simply sign it off and pay the rest.
Householders in England and Wales can claim grants of up to £7,500 for heat pumps or £5,000 for biomass boilers. More than 100,000 people have already claimed their grant. It’s a smoother process than most people think, if you know how.
Who Actually Qualifies?
Most people assume they won’t qualify. Wrong assumption. The eligibility rules are broader than you’d expect. Own a property in England or Wales? Replacing a fossil fuel system? You’re probably in. Homeowners, landlords, small businesses—all eligible. Even self-builds qualify under certain conditions.
Do You Need an EPC?
Yes, but not the rating you think. You need an Energy Performance Certificate issued in the last 10 years. That’s it. No minimum rating required since May 2024. The old rules demanded D-G ratings with completed insulation measures. Gone.
Your EPC just proves the property exists and has heating demand data. Installers use it to size your system correctly. Don’t have one? Get one. Costs £50-£120 and takes two days.
What Heating Systems Qualify for Replacement?
Gas boilers? Yes. Oil tanks? Yes. LPG? Yes. Direct electric heaters? Yes.
Already have a heat pump? No grant for you. The scheme targets fossil fuel replacements only. Makes sense—why pay you to swap one heat pump for another?
Your new system must handle your full heating load. No hybrid setups. No gas backup. Full transition or nothing. Heat pumps need a seasonal performance rating (SCOP) of at least 2.8. That’s government-speak for “actually efficient.”
What About Landlords and Tenants?
Landlords can apply. Tenants cannot.
Own rental property? You claim the grant and upgrade the heating. Your tenant benefits from lower bills. You benefit from higher property value and tenant retention.
Private renters asking their landlord? Good luck. But social housing sometimes qualifies through different routes.
The Application Process (Simpler Than Buying a Phone)
Here’s where people overthink it. The process has five steps. Your installer handles four of them.
Step 1: Find Your MCS-Certified Installer
Not all heating engineers qualify. You need MCS certification or TrustMark registration.
Use the official Gov.uk installer finder. Search your postcode. Get 2-3 quotes minimum. Anyone asking for upfront payment before Ofgem approval? Walk away. Red flag.
Compare quotes on system size, efficiency ratings, and warranties. Cheap isn’t always best. £1,000 saved on install could cost £2,000 extra in running costs over five years.
Step 2: Home Survey and Quote Agreement
The installer visits your property. They measure heat loss. They check radiators. They inspect insulation. They verify your existing system qualifies.
This survey matters. Get it wrong and you’ll have an oversized heat pump running inefficiently or an undersized one struggling in winter. Good installers spend 2-3 hours on surveys. The Cowboys spend 20 minutes.
You agree to the quote. Final price includes the grant deduction. See £12,000 with £7,500 grant? You pay £4,500. Simple math.
Step 3: Installer Submits Application (Not You)
Here’s the bit people miss: you don’t apply yourself.
Your installer submits through the Ofgem portal on your behalf. They upload your details. They verify eligibility. They request the voucher. You just authorize them to act for you.
Government bureaucracy is designed correctly for once. Why make homeowners fill out forms when installers know the system better?
Step 4: Ofgem Approval and Voucher Issuance
Ofgem reviews within 3-5 working days. Fast compared to most government schemes.
Approval comes through. Ofgem issues a voucher valid for 120 days. The grant amount gets locked. Installation must be completed within that window or the voucher expires. No extensions. No excuses.
Step 5: Installation and Payment
Installation takes 2-3 days for air source heat pumps, up to a week for ground source.
You pay the installer the balance upfront. They claim the grant reimbursement from Ofgem after completion. Post-install, Ofgem or MCS may contact you to verify the work. Phone call, site visit, or audit. Standard quality control.
Total timeline from the first quote to the working system? 8-12 weeks.
What It Costs You (After Grants)
Let’s talk real money, not government estimates that assume perfect conditions.
| SYSTEM TYPE | GRANT | TOTAL COST | YOU PAY | ANNUAL SAVINGS |
| Air Source Heat Pump | £7,500 | £10,000-£14,000 | £2,500-£6,500 | £200-£500 |
| Ground Source Heat Pump | £7,500 | £25,000-£40,000 | £17,500-£32,500 | £400-£800 |
| Biomass Boiler | £5,000 | £10,000-£20,000 | £5,000-£15,000 | £100-£300 |
Savings assume average UK home with decent insulation. Off-gas properties save more. Urban gas users save less.
No VAT on heat pump installs. That’s another 20% you’re not paying. Add it up and the grant effectively covers 40-60% of true costs for most homes.
Common Mistakes (And How to Avoid Them)
Most application failures come from three errors. Dodge these, and you’re golden.
Using Non-MCS Installers
Tempting to hire your mate’s cousin who does heating “on the side.” Don’t.
Only MCS-certified or TrustMark-registered installers qualify. No certification? No grant. Ofgem rejects the application. You’re stuck with a heat pump you paid full price for.
Verify credentials on the MCS directory before signing anything. Takes two minutes. Saves thousands.
Expired or Missing EPCs
Is your EPC over 10 years old? Invalid.
Applications get rejected for outdated certificates. Check yours now at gov.uk/find-energy-certificate. If it’s dated 2014 or earlier, book a new assessment. Costs £60-£100. Takes less than an hour.
Some properties never had EPCs. New builds sometimes skip them. Get one done before contacting installers.
Missing the 120-Day Deadline
Vouchers expire. No extensions. No appeals.
Ofgem issues your voucher on approval. You have 120 days to complete installation. Miss it? Start over. New application. New wait time. New voucher.
Book installation dates before applying if possible. Installer shortages in winter mean 6-8 week lead times. Factor that in.
What About Other Schemes?
Great British Insulation Scheme (GBIS)
Low income? Claim free insulation first.
GBIS targets fuel-poor households with grants for loft, cavity wall, and solid wall insulation. Get your property thermally tight before installing a heat pump. Better efficiency. Lower running costs.
BUS and GBIS can combine. One handles insulation. One handles heating. Both reduce your bills.
ECO4 Funding
Similar to GBIS but with broader eligibility.
ECO4 offers means-tested support for insulation and heating. Some households qualify for both ECO4 Scheme and Boiler Upgrade Scheme. Check with installers—many handle multiple schemes.
Scotland and Northern Ireland?
You’re excluded from BUS. Different countries, different rules.
Scotland runs Home Energy Scotland with loans and grants. Northern Ireland has separate schemes. Check your local government’s energy pages.
Your Next Steps (Do This Today)
Stop reading. Start acting.
- Step 1: Pull your EPC from gov.uk/find-energy-certificate. Check the issue date. Over 10 years old? Book a new one.
- Step 2: Search the Gov.uk installer finder. Get three quotes minimum. Verify MCS certification for each.
- Step 3: Book surveys. Compare quotes on system size, efficiency, and warranties—not just price.
- Step 4: Pick your installer. Authorise them to submit your application.
- Step 5: Wait for Ofgem approval. Schedule installation. Pay the balance. Done.
The 2025/2026 budget is £295 million. Funds are finite. Over 100,000 grants already claimed. Apply early or miss out.
Your fossil fuel boiler is costing you money every month. Heat pumps cut bills 30-50% for off-gas homes. Even gas users save 10-20% long-term. Why wait?
