.svg){kind=small}
Window Grants Eligibility Checker
Could you get free or subsidised windows? Check your eligibility for UK government grants in 60 seconds. No email required — instant results.
Step 1 of 5
Where is your property located?
Different grants are available depending on your location in the UK.
UK Window Grants 2026: Complete Guide to Free Double Glazing
The UK government offers several schemes to help homeowners and tenants upgrade their windows for free or at a reduced cost. With energy prices remaining high and new regulations tightening EPC requirements for rental properties, window grants have never been more valuable. Use our free Window Grants Eligibility Checker above to find out which schemes you may qualify for.
What Window Grants Are Available in 2026?
ECO4 Scheme (Ending March 2026)
The Energy Company Obligation (ECO4) is one of the most widely used window grant schemes. Energy suppliers fund energy efficiency improvements — including replacing single glazing with double glazing — for qualifying households. ECO4 can cover up to £14,000 per household, potentially funding 100% of the cost for eligible applicants.
To qualify, you typically need to receive means-tested benefits (such as Universal Credit or Pension Credit), have a property with an EPC rating of D-G, and be in council tax bands A-D. The scheme ends on 31 March 2026, so time is limited to apply.
Warm Homes: Local Grant (New for 2026)
The government's flagship Warm Homes Plan is a £15 billion programme running until 2029. The Warm Homes: Local Grant provides up to £15,000 per property for energy performance improvements including double and triple glazing. Households earning under £36,000 or receiving means-tested benefits may qualify.
LA Flex (Local Authority Flexibility)
If you don't receive qualifying benefits but have a household income of £31,000 or less, you may still qualify through the LA Flex route. Local authorities can refer low-income households to the ECO4 scheme even without benefits. Contact your local council to check if they participate and what their criteria are.
How Much Can You Save with New Windows?
Beyond the grants themselves, upgrading your windows delivers significant ongoing savings. The Energy Saving Trust estimates that replacing single glazing with A-rated double glazing saves approximately £235 per year for a typical semi-detached home. Over a 20-year window lifespan, that's nearly £5,000 in energy savings alone.
Curious about your potential savings? Use our Window U-Value Calculator to understand the energy efficiency of different glazing options, or our Window Investment Calculator to see how new windows affect your property value.
Which Windows Does Harrington Install?
Harrington Windows installs a complete range of high-performance windows suitable for grant-funded projects, including:
Act Before Schemes Close
ECO4 ends 31 March 2026. If you think you might be eligible, don't wait — check your eligibility now and contact us for a free, no-obligation consultation about the grant application process.
Explore Our Other Free Tools
Frequently Asked Questions About Window Grants
Can I get free windows from the government UK?
Yes, the UK government offers several schemes that can fund free or subsidised window replacements. The ECO4 scheme (ending March 2026) provides up to £14,000 for energy efficiency improvements including double glazing for qualifying households on benefits. The new Warm Homes: Local Grant offers up to £15,000 for households earning under £36,000. Eligibility depends on your income, benefits, property EPC rating, and location.
What is the ECO4 scheme for windows?
ECO4 (Energy Company Obligation 4) is a government scheme where energy suppliers fund energy efficiency improvements for low-income and vulnerable households. It covers single to double glazing replacement and can fund up to £14,000 per household. To qualify, you typically need to receive means-tested benefits and have an EPC rating of D-G. The scheme runs until 31 March 2026.
What benefits qualify for free windows?
Qualifying benefits include Universal Credit, Pension Credit (Guarantee or Savings), Income-based Jobseeker's Allowance, Income-related Employment & Support Allowance, Income Support, Working Tax Credit, Child Tax Credit, Housing Benefit, and Child Benefit. Even without benefits, you may qualify through the LA Flex route if your household income is £31,000 or below.
Is the ECO4 scheme ending?
Yes, ECO4 is set to end on 31 March 2026. However, it will be replaced by ECO5, which is expected to launch in April 2026 with a focus on renewable technologies. Additionally, the Warm Homes: Local Grant programme is expanding through 2029. We recommend applying as soon as possible to take advantage of current schemes.
What is the Warm Homes Plan?
The Warm Homes Plan is the government's flagship programme to improve home energy efficiency. The Warm Homes: Local Grant provides up to £15,000 per property for energy improvements including double and triple glazing, insulation, solar panels, and heat pumps. It targets households earning under £36,000 or on means-tested benefits, with the programme running until 2029.
Do I need to pay anything towards my window grant?
This depends on the scheme and your circumstances. Under ECO4, qualifying households on benefits may receive 100% funding. Under the Warm Homes: Local Grant, funding of up to £15,000 is available. Some schemes may require a contribution depending on your income level. Our eligibility checker above gives you a personalised assessment.
%2520(1).webp&w=2048&q=75)
Expert Grant Support
Need Help with Your Window Grant Application?
Our experienced team can guide you through the grant application process and ensure you get the best possible outcome. We handle installations for grant-funded projects across London, Hertfordshire, Essex, and Cambridgeshire.
Get Free Grant Advice