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While there are no government grants specifically for double glazing, other funding sources can help with the cost of an energy-efficient window installation.
Although there aren’t any specific double glazing grants in the UK, there are currently several government funding schemes that can help reduce the costs of installing new windows, including double-glazed windows. Through the Energy Company Obligation (ECO4) scheme, for example, qualifying low-income households can receive free double glazing windows.
While ECO4 is scheduled at the end of this month, the more recent Warm Homes: Local Grant plan gives eligible households access to a grant to cover upgrades to double or triple glazing.
Our experts continually monitor the latest government policies, funding schemes and industry updates to ensure you have access to the most accurate and up-to-date information about new windows grants. Any new details on the Labour Government’s Warm Homes Plan, which it outlined in January 2026, will be made available here as soon as possible after they are released.
In the meantime, you should have all the information you need below to find out whether you are eligible for any double glazing grants and how to apply to the various schemes available.
| Double glazing schemes | Window upgrade available | Area covered | Dates | Eligibility |
|---|---|---|---|---|
| ECO4 scheme | Dependent on inspection | England, Scotland and Wales | ENDS SOON 1 April 2022 – 31 March 2026 | People receiving income-related benefits |
| Warm Homes: Local Grant | Upgrading to double or triple glazing | England | 2025 – 2028 | Homeowners and tenants on a low income and/or receiving income-related benefits |
| Welsh Home Improvement Loans scheme | Insulation | Wales | 2015 – 2030 | Homeowners on a certain income or benefits requiring essential repairs |
| Affordable Warmth scheme | Draught-proofing windows and doors; replacing single glazed windows | Northern Ireland | September 2014 – March 2026 | Those with an income under £23,000 a year |
| Home Energy Grant and Loan Scheme | Interest-free loan to upgrade single glazing with double glazing | Scotland | May 2017 – ongoing | Homeowners or self-builders (no property developers or landlords) |
Grants, loans and schemes are all potential sources of funding for double glazing windows, but they work in different ways.
A grant is an award of money that generally doesn’t need to be repaid, while a loan is borrowed money that must be repaid over an agreed period.
Meanwhile, a government scheme refers to a policy programme that may include window grants, loans or payment plans.
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ECO4 is the main scheme for household energy efficiency improvements in the UK, including double glazing installations. This programme is a partnership between medium and large energy suppliers and Ofgem, the UK energy regulator.
ECO4 helps low-income households and those affected by fuel poverty in England, Scotland and Wales to reduce their energy bills and household carbon emissions by funding home improvements.
Through this scheme, participating energy companies are obligated to fund energy-efficient upgrades to qualifying customers’ homes. Under a component of ECO4 called the Home Heating Cost Reduction Obligation, suppliers must promote measures that save energy and reduce bills, such as boiler upgrades and double glazing windows installation.
In some cases, the ECO4 scheme could cover 100 per cent of the costs of upgrading windows, but some qualifying homeowners may be required to contribute towards the cost of their double glazing installation. ECO4 funding is means-tested, which means the level of financial support will vary between households depending on income and benefits received.
Samantha lives with her young son in a house with an EPC rating of F. She’s a private tenant, but as she receives qualifying income-related benefits, her landlord was able to successfully apply for an ECO4 grant, which covered several energy-efficient home upgrades.
“My house was horribly damp and cold, and I dreaded winter arriving,” Samantha told us.
“The job centre told me about the ECO4 grant and said my landlord could apply for it, as I was on Universal Credit. He applied, and once I’d had a home check and gave proof of my benefits, it was approved.
“They were able to change my old, rotting windows for uPVC double glazing, put in insulation and install a new heating system. I have a warm house and lower bills now, and my landlord gets an improved property without me complaining all the time!”
You can apply for the ECO4 scheme if you’re in receipt of at least one of the following benefits:
If your supplier is not signed up to deliver ECO4 support, you can contact any obligated supplier, which include:
Individuals can’t apply for ECO4 directly; instead, if you want to apply, you’ll have to do so through your window installer. After your application is submitted and you’ve gone through an eligibility check, an energy assessor will conduct a home evaluation to find out your specific needs. If the grant is approved, you’ll receive confirmation and your chosen installer will receive the grant funds directly.
ECO4 is due to end on 31 March 2026, so don’t wait too long if you’re intending to apply.
We spoke to Ashley Tong, Sales and Marketing Director at window installer Britelite Windows, to get his expert view on ECO4 applications. He explained that the uptake of the ECO4 scheme is very low, as many people aren’t aware that they can get government window grants for energy-efficient home improvements.
While upgrades from single to double glazing or double glazing improvements can be funded under ECO4, it’s up to the energy company to determine which retrofit projects they choose to fund. Tong told us that many energy suppliers will look at other energy-saving measures, such as insulation or a boiler upgrade, before they consider funding double glazing.
LA Flex is an extension of the ECO4 scheme which offers financial support to households that don’t meet all of the qualifying criteria for ECO4 funding.
Under LA Flex, local authorities can allocate funds at their discretion to assist certain households in their area with the cost of energy-efficient home improvements, including those with lower incomes who aren’t receiving means-tested benefits but are living in fuel poverty.
LA Flex grants can be used towards improvements such as double glazing installation, loft insulation and heating upgrades.
In addition to ECO4 and LA Flex, several dedicated government schemes provide grants and/or loans for energy-efficient home improvements to residents in England, Scotland, Wales or Northern Ireland. Some of the schemes are administered via the central UK Government, while others are put in place by devolved national legislatures.
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Launched in April 2025 as part of the latest Labour government budget, the Warm Homes: Local Grant aims to tackle fuel poverty, cut carbon emissions and promote renewable energy adoption in lower income households.
Under the Local Grant, eligible households across England could receive a grant up to £15,000 towards energy efficient home improvements including installing double or triple glazing, or draught proofing. A further £15,000 is available to each household to install a low-carbon heating solution such as an air source heat pump.
Eligibility criteria includes:
You can check your eligibility for the Warm Homes Plan with the government’s free eligibility checker. If you are eligible, your application will automatically be sent to your local authority. Local authorities are the organisations who handle dispensing the funding and they can flex the requirements to meet their communities’ needs at their discretion, so it’s worth applying even if you don’t meet every single eligibility criteria.
Eligible Welsh homeowners may be able to secure an interest-free loan ranging from £1,000 to £35,000 via the Welsh Government’s Home Improvement Loan scheme.
The loans are administered by Welsh local authorities, who may charge a 15 per cent administration fee upon approving a loan. Home Improvement Loans are the closest option to window replacement grants available in Wales.
To qualify for a Home Improvement Loan, you must be a homeowner, landlord, developer or charity/third sector organisation and pass an affordability assessment.
Minimum loan amount are £1,000 per household, and repayment terms are decided on a case-by-case basis, with a maximum repayment period of 10 years.
The Affordable Warmth Scheme supports low-income households in Northern Ireland through funding for energy-efficient home improvements. To qualify for the scheme, you must own or privately rent the property as your main home and earn less than £23,000 a year. Eligible households can receive up to £7,500 towards energy-efficient upgrades, including double glazing installations.
The scheme offers upgrades in the following priority order:
Improvements must be carried out in the order of priority outlined above until the funding is used up. For example, if a property requires improvements listed under Priority 1 or Priority 2, then it’s unlikely that the grant will cover window replacement, which is classed as Priority 3.
To be eligible for the Affordable Warmth Scheme, you must live in a home with an EPC rating of E or below, and be in receipt of one of the following benefits:
To apply to the Affordable Warmth Scheme, you’ll need to get in touch with the Northern Ireland Energy Advice Service by emailing [email protected] or calling 0800 111 44 55. You’ll need to be able to show that you own or privately rent your property (and have your landlord’s consent in the event of the latter) and have a document proving your income level.
The Home Energy Scotland Grant and Loan scheme is open to all homeowners in Scotland, who could be eligible to receive an interest-free loan of up to £8,000 to help with the costs of upgrading from single glazing to double or triple glazing.
A ‘rural uplift’ of £1,500 is also available, raising that total to £9,500 for households in remote rural and island areas, as well as off-grid accessible rural areas as defined by the Rural Urban Classification.
Previously, the scheme also offered grant funding for energy efficient home improvements such as upgrading windows, but this is no longer available for windows specifically (you could still get a grant for insulation or high heat retention storage heaters). Grant funding is also still available for clean heating systems such as solar thermal panels or heat pumps.
Importantly, you must own your home and live in it to apply for the Home Energy Scotland Grant and Loan Scheme. This means landlords and property developers cannot benefit.
You can check your eligibility using the Home Energy Scotland self-assessment tool. If you are eligible, your contact details will be sent over to an adviser who can assess your home’s needs and recommend home improvements to improve its efficiency, which may include double glazing.
The Home Upgrade Grant (HUG2) scheme was designed to support an estimated low-income households, including those living off the gas grid or in social housing with energy-efficient or low-carbon home improvements, including double glazing. The scheme, which closed in March 2025, was supported by local authority funding and was available through 45 of the 317 local authorities in England.
The Green Deal was a government scheme that ran between 2012 and 2015, and while it is closed to new applications, homeowners who applied then can still receive funding today.
Financed by private financial services providers, the Green Deal Loan scheme offers funding for energy-saving home improvements to properties in England, Wales and Scotland, including double glazing, solar panels and boiler upgrades.
If you do not qualify for a government windows grant, the good news is that there are other loans and financial assistance options available, including the Barclays Greener Home Rewards.
Many double glazing providers offer finance options to help you spread the upfront cost of installation, as well as time-limited discounts that decrease the price of window replacement.
We’ve compiled some of the best alternative sources of double glazing funding or cost savings below.
| Double glazing financial assistance schemes | Running time | Regions covered |
|---|---|---|
| Barclays Greener Home Reward | Ongoing | England, Scotland, Wales and Northern Ireland |
| Installer-led window scrappage schemes | Ongoing | England, Scotland, Wales and Northern Ireland |
The Greener Home Reward scheme is offered to homeowners who have a mortgage with Barclays. It provides at least £500 towards the cost of various energy-efficient home improvements, including double glazed windows. You have 3 months from the invoice or payment date to submit your claim for a Greener Home Reward.
To apply for the Barclays Greener Home Reward, you must meet a number of criteria:
From the 8th of January 2026, Barclays is reducing the types of home improvements eligible under the scheme, as well as reward amounts.
Many double glazing companies across the UK offer scrappage schemes. Essentially, the installer pays you a certain amount for your old windows and then recycles them responsibly, reducing the cost and environmental impact of replacing your windows.
One highly rated windows installer, Anglian, offers the Anglian Scrappage Scheme, which can reduce the cost of replacement windows by an average of £1,000. Your old window frames will be recycled to make other products such as loft insulation and plastic piping, while the glass panes are used for things like aggregate for road surfacing.
Installers in Scotland, Wales, the North of England and the Midlands’ scrappage schemes are supported by FENSA, which is a government-authorised scheme that monitors regulatory compliance for replacement windows and doors.
An EPC is a document that provides an overview of a property’s energy efficiency. It rates your home’s energy efficiency on a scale from A (most efficient) to G (least efficient) and includes recommendations for improving energy usage. The EPC rating is crucial for homeowners looking to understand their property’s energy consumption and potential areas for improvement. It’s often required when selling or renting a home or when applying for a government grant to fund energy-efficient home improvements such as double glazing.
To check your home’s EPC rating, visit the Government’s EPC register and search for your property by postcode. The register maintains a database of EPCs for properties assessed in the past 10 years. If your home has an up-to-date EPC, you can view and download the certificate free of charge.
If your property doesn’t have an EPC or its EPC has expired, you’ll need to have your home assessed by an accredited energy assessor, which can cost between £60 and £120. The assessor will evaluate various aspects of your property such as its insulation, heating systems and window quality before issuing the EPC rating.
Listed buildings are usually exempt from requiring an EPC.
If you’re the tenant of a privately-let property and you meet the applicable eligibility criteria, your landlord may qualify for ECO4 funding to improve the EPC of the property through a double glazed windows grant.
Landlords with properties listed with the Scottish Assessors Association can apply for a Private Rented Sector Landlord Loan from Home Energy Scotland. The landlord can borrow up to £38,500 per property, with a set amount applicable to specific upgrades, including £4,500 for upgrading single glazing. Note that this funding does not apply to replace or improve existing double- or triple-glazing.
Yes, landlords can enhance their rental properties’ attractiveness and profitability by applying for double glazing grants to cover home improvements, providing tenants with a better experience while maximising their return on investment.
Even without a double glazing grant, upgrading to double glazed windows could still make financial sense for many households.
Double glazing reduces the transfer of heat from inside your home to the outside. This energy efficiency improvement can save you up to £235 per year on your heating bills – a figure that will only rise as energy prices continue to skyrocket.
In addition, double glazed windows can improve the appearance, value and saleability of your home. If you have plans to move, you’ll be pleased to know that double glazing can add up to 10 per cent to your property’s value while reducing your carbon footprint.
Whether or not you can get a window grant or loan to help with installation costs, we would still recommend replacing your windows with double glazing if your budget allows it.
Double glazing brings many valuable benefits to a home, including:
You should replace your old windows every 20 years to keep your home as energy efficient as possible. If you’re noticing draughts, condensation, or rising energy bills, it might be time to upgrade those faulty windows by applying for a government grant, if you are eligible.
There are other ways to save money on double glazing aside from grants and loans. Consider the following factors to reduce the cost of installing double glazing:
Home improvement schemes including double glazing grants or loans are updated regularly, although brand new initiatives are quite rare.
Our research team regularly checks official sources to discover upcoming grants for windows in England, Scotland, Wales, and Northern Ireland. Whenever a new scheme is announced, you’ll find the details here.
Depending on your location, you can also check the following sources for updates:
You could get free windows under the ECO4 scheme, or the Warm Homes Plan: Local Grant if you live in the UK, but that depends on your socioeconomic status, where you live and the energy efficiency rating of your home.
If you are eligible, a government grant may cover up to 100 per cent of double glazing costs, though some schemes prioritise other home improvements first. Depending on the terms and conditions of your funding, you may be expected to contribute to installation costs. Double glazing costs vary based on the window type and material, the number of windows and the installer. On average, uPVC windows cost around £500 each, while timber windows start at about £1,500 per window.
When to upgrade your windows depends on factors such as your financial situation, your property plans and the condition of your existing windows. However, considering the current rise in energy prices, now is a good time to make any energy efficient improvements to your home that may bring your bills down.
In January 2024, the UK Government eased the rules on double glazing for listed buildings in England, allowing energy-efficient window replacements subject to planning permission and conservation guidelines. Listed properties – which are often eligible for energy efficiency grants due to poor energy performance – are usually required to meet certain socio-economic criteria to receive a grant
Alternatively, you can bookmark this page as we regularly update it with accessible summaries of new double glazing grants, loans and schemes.
We hope this guide has helped you find details of a suitable funding source. Our research team regularly checks official sources to discover upcoming grants for windows in England, Scotland, Wales, and Northern Ireland. Whenever a new scheme is announced, you’ll find the details here.
