A refusal from Ofgem can feel final when you first read it. In many cases, it isn’t. Plenty of turned-down applications come down to an expired certificate, a missing reply, or a detail that didn’t match, and most of those can be put right.
This guide explains what a refusal actually means, why applications fail, which problems you can fix, and how to decide your next move.
What a Refusal Really Means
You never apply for the boiler upgrade scheme on your own. Your MCS-certified installer sends the voucher request to Ofgem on your behalf, and Ofgem checks it against the scheme rules. A rejection tells you that this particular application, as submitted, fell short of those rules.
It doesn’t put a permanent mark against you or your home. It also doesn’t leave you out of pocket. The grant comes off your quote only after approval, and with our process, installation happens after that point. A refusal pauses the project instead of leaving you with a bill for half-finished work.
Why Applications Get Turned Down
Paperwork that doesn’t line up
The most common problems are also the simplest. Your Energy Performance Certificate must have been issued within the last 10 years. If it has lapsed, or if your home never had one, Ofgem can’t move forward. Mismatched names, addresses, or ownership details between your documents and the application can cause the same result.
A missed consent request
Ofgem contacts the property owner to confirm they agree to the installer applying. That message sometimes lands in a junk folder or simply gets overlooked. Without your confirmation, the application can stall and eventually fall through.
A property outside the rules
Some homes don’t fit the scheme at all. These include:
- Social or council housing
- New builds delivered by developers
- Properties in Scotland or Northern Ireland
- Homes that already had heating upgraded through ECO4
- Houses already running a heat pump or biomass boiler
Technical limits found on site
Strictly speaking, Ofgem doesn’t judge your garden or your walls. Our surveyor does. If there’s no suitable spot for the outdoor unit, or the installation can’t meet MCS 020(a) sound and distance rules, the project can’t go ahead under the grant. A careful survey usually spots this before anyone submits anything.
Problems You Can Usually Correct
The good news is that the paperwork issues tend to be quick fixes.
An out-of-date EPC needs a fresh assessment from an accredited assessor. Booking one early saves weeks of waiting later. Wrong or mismatched details simply need correcting and checking against your ID and proof of ownership. If you missed the consent message, a prompt reply often gets things moving again.
Once the problem is fixed, your installer can resubmit the application. Approval isn’t guaranteed the second time either, but a clean, complete application gives you a far better footing.
When Your Home Might Qualify Later
Timing changes some answers. Perhaps you’re still completing the purchase of a property, or your EPC renewal is in progress. Once you legally own the home and hold a valid certificate, the picture can look very different.
Funding matters too. The government sets a yearly budget for the scheme, and vouchers are issued while money remains. If a funding round runs dry, applications may pick up again when new budget opens. Deadlines also count. The £9,000 voucher for homes switching from oil or LPG needs an application before March 31, 2027, while the £7,500 voucher for most other eligible switches runs to December 30, 2029.
Some exclusions won’t shift with time, though. Waiting won’t change a home’s location, its status as social housing, or the fact that a developer built it.
How Your Installer Helps
Picking the right installer prevents most refusals before they happen. At Eco Energy Services, we check your EPC date, confirm your current heating system, and survey the property in person before we submit a single form. Our design follows MCS standards, and if your radiators, hot water tank, or expansion vessel need upgrading, we build that into the grant-funded package.
If Ofgem does refuse an application, we read the reason with you and explain it in plain terms. When the problem is fixable, we help you sort it and resubmit. When your home genuinely doesn’t qualify, we tell you that honestly instead of stringing you along.
What to Do Next
If you’ve received a refusal, or you want to avoid one, start here:
- Read the stated reason carefully before doing anything else
- Check your EPC issue date
- Search your inbox and junk folder for any message from Ofgem
- Speak to your installer about whether a resubmission makes sense
A refusal is often just a detour. If you haven’t started yet, apply for boiler upgrade scheme support through our short form. We’ll review your details, arrange a survey, and give you a straight answer on whether an air-to-water heat pump suits your home.
