Replacing an old back boiler can be expensive. But what if you didn’t have to cover the full cost? Thanks to government-backed support schemes, many UK homeowners now qualify for free or heavily subsidised boiler upgrades. If you’re still using an outdated heating system, the back boiler replacement grant might be just the help you need.
In this blog, we’ll walk you through how these new boiler grants work, who qualifies, and how you can apply today—without the stress.
What Is a Back Boiler Replacement Grant?
Back boilers were once a common feature in UK homes, especially those built before the 1980s. They’re usually tucked behind fireplaces and connected to gas fires. While they were space-saving and functional in their time, they’re now highly inefficient and unsafe by modern standards.
Back boiler replacement grant is one of the efforts of the UK government aimed at facilitating families’ switching to cleaner, safer, and more effective heating systems. Through schemes such as the ECO4 (Energy Company Obligation) and local council programs, you may be entitled to a fully new A-rated boiler for free or at least at a very low price.
Why Replace Your Back Boiler?
Let’s keep it real—old back boilers waste energy, cost more to run, and often fail safety standards. Many of them:
- Lack proper insulation
- Are difficult to repair due to discontinued parts
- Can increase the risk of carbon monoxide leaks
- Are banned under current UK building regulations for new installations
Replacing one could cut your heating bills by hundreds each year. According to the Energy Saving Trust, switching to a modern condensing boiler can save you up to £580 annually depending on your current system and home size.
Who Qualifies for New Boiler Grants?
The UK government and energy companies have set clear criteria for homeowners to access new boiler grants. You may qualify if:
- Your current heating system includes a back boiler
- You own or privately rent your home
- Someone in the household receives benefits (like Pension Credit, Universal Credit, Child Tax Credit, etc.)
- Your property has a poor energy efficiency rating (usually D or below)
Good to know: Some local councils offer additional funding even if you’re not on benefits, especially if your household income is under a certain threshold.
Real-World Example: Jane from Liverpool

Jane, a 67-year-old pensioner from Liverpool, was using a back boiler installed in the early ‘80s. It broke down often, and her energy bills were climbing.
She contacted an ECO4 scheme-approved installer and found out she qualified for the back boiler replacement grant. Within two weeks, engineers removed the old system and installed a new A-rated combi boiler. The total cost? £0.
Jane now enjoys better heating, faster hot water, and a noticeable drop in her monthly energy bills.
What’s the Process to Apply?
Applying for a back boiler replacement grant is easier than you might think. Here’s a step-by-step breakdown:
- Check Eligibility
Use an online eligibility checker from trusted installers or energy support websites. You’ll be asked a few questions about your property, income, and current heating system. - Book a Survey
If eligible, a qualified surveyor will visit your home to inspect the boiler and energy performance. - Get Approved
The installer submits your application to the scheme provider. This can take a few days to a couple of weeks. - Boiler Installation
Once approved, a Gas Safe registered engineer replaces your back boiler—often within a single day. - Aftercare
Most providers offer warranties and follow-up support.
Case Study: Grant-Funded Upgrades in Birmingham
In 2024, a housing initiative in Birmingham helped over 500 households switch from outdated back boilers to high-efficiency systems using new boiler grants.
One participant, a single mother living in a three-bedroom terrace, received a full boiler replacement worth £2,800 through the scheme. She said:
“I didn’t think I’d qualify, but they made the process simple. The engineers were in and out in a day, and my heating has never worked better.”
Benefits of Using a Boiler Grant
Let’s break it down:
- Save Money – You get a modern boiler either free or at a fraction of the usual cost
- Lower Energy Bills – New boilers use less gas and heat up faster
- Eco-Friendly – A-rated boilers reduce your carbon footprint
- Peace of Mind – Safer heating and longer equipment lifespan
- Increase Property Value – Energy-efficient homes attract more buyers
Don’t Wait: Limited Grants Available
Funding under the back boiler replacement grant is limited. Once the budget for a period is used up, you may need to wait months—or miss out altogether.
If your home still relies on a back boiler, now is the time to explore your options. Not only could you save money upfront, but you’ll also enjoy long-term comfort and safety.
How to Get Started Today
Ready to find out if you qualify? Start with these simple steps:
- Visit your local council’s website or a trusted boiler grant provider
- Use their online eligibility checker
- Book your free survey
Many providers even offer assisted applications, guiding you through the paperwork.
Final Thoughts
The Back Boiler Replacement Grant is one of the most worthwhile energy-efficiency improvements out there in the UK today. As a pensioner, single parent, or simply someone who’s had enough of extortionate heating bills, this might be your opportunity to fit a new, efficient boiler without taking out a second mortgage.