Boiler Grants UK 2026: Free & Funded Boiler Schemes
If your boiler is old, unreliable, or expensive to run, you may be able to get support through UK schemes that fund heating and energy efficiency improvements. Some households can qualify for heavily subsidised (and in some cases free) upgrades through energy supplier obligations and local programmes. This guide explains the main boiler grant routes people commonly ask about in 2026, how eligibility generally works, and how to apply safely.
What Boiler Grants Exist in the UK?
“Boiler grants” is a catch-all phrase. In reality, support usually sits within broader programmes focused on reducing household energy use and fuel poverty. These may fund boiler replacements, heating controls, insulation, or low-carbon alternatives depending on circumstances.
ECO4 (Energy Company Obligation)
ECO4 is a major route for funded energy improvements. Eligibility typically depends on household circumstances, property characteristics, and your local authority’s criteria. It often supports a package of measures (like insulation plus heating upgrades) rather than only swapping a boiler.
Warm Home Discount and Other Support
The Warm Home Discount is primarily a bill support scheme rather than a boiler grant, but it’s often mentioned alongside grant options. Local authority programmes and charity support may also exist depending on your area.
How to Apply (Safely)
Start with official guidance and reputable installers/assessors. Be cautious of cold callers promising “free boilers” without explaining eligibility, surveys, or what measures are included. Always check credentials and confirm what work is covered before agreeing.
If You’re Replacing a Boiler: Don’t Oversize
Grant-funded or not, boiler sizing still matters. Replacing like-for-like without reassessing can lead to inefficiency and cycling—especially if you’ve improved insulation or changed radiators.
Check the Right Boiler Size (kW)
If you’re applying for a funded boiler replacement, use our free calculator to estimate a sensible kW range so you can sanity-check recommendations.
Use the Boiler Size CalculatorFrequently Asked Questions
Can I get a free boiler in the UK?
Some households may qualify for heavily subsidised upgrades through schemes like ECO4, but eligibility depends on your circumstances and property. Always confirm via official routes and a proper survey.
Is ECO4 the same as a boiler grant?
ECO4 is a broader energy efficiency obligation that can fund heating upgrades, often as part of a package of measures rather than a simple boiler swap.
Do I need to be on benefits to qualify?
Many programmes use income/benefit-related eligibility criteria, but local authority schemes can vary. Check current guidance for your area.
Will a grant cover boiler servicing or repairs?
Grants usually focus on upgrades and replacements rather than routine servicing. If your boiler is unsafe or failing, ask an engineer about repair vs replacement options.
How do I avoid scams?
Be wary of high-pressure sales and vague promises. Verify credentials, get written details of what’s included, and use official scheme information to confirm eligibility.