What Home Energy Scotland is
Home Energy Scotland is the Scottish Government funded service that helps households make their homes warmer and cheaper to run. For windows specifically, the help now comes as an interest-free loan rather than as free money. That distinction matters, so it is worth stating plainly: you borrow the funds and pay them back, but you pay no interest on the balance. The non-repayable grant that some homeowners remember reading about is no longer available for windows specifically, though it does remain for other measures such as insulation and clean heating. If you live in Scotland and want to replace tired single glazing, this loan is the standing route to do it without the cost of borrowing on top.
The interest-free loan for windows
The headline figure is an interest-free loan of up to £8,000 towards upgrading single glazing to double or triple glazing. Because there is no interest, you only ever repay what you borrow, which makes it far cheaper than a typical home-improvement loan or putting the work on a credit card. It is best thought of as a way to spread the cost of a job you were going to do anyway, not as a discount on the windows themselves. If you are weighing up whether to step up from double to triple, our guide on double versus triple glazing sets out where the extra pane earns its place and where it does not, which is useful before you fix the amount you want to borrow.
One honest point to keep in mind: the cap is up to £8,000, so on a larger whole-house project the loan may not stretch to the full bill. Price the work first so you know what the loan covers and what you would fund yourself. Our uPVC window calculator gives you a realistic figure to plan around before you commit to a loan amount.
The rural uplift to £9,500
Getting tradespeople and materials to remote and island homes costs more, and the scheme recognises this with a rural uplift. The uplift of £1,500 raises the maximum interest-free loan for glazing from £8,000 to up to £9,500. It applies to remote rural, island and off-grid accessible rural areas. If your home sits in one of these areas, you can borrow the higher amount on the same interest-free basis, which helps offset the premium that rural locations usually pay for window installation.
I treat this as cheap money for a job you were doing anyway, not as a reason to over-spec. Get a couple of honest quotes for the glazing first, then borrow only what the work actually needs. Interest-free is brilliant, but it is still a loan you have to pay back, so do not let the £8,000 ceiling tempt you into windows you do not need.
Tom Bradley, FENSA-registered installer
Who can apply
This loan is for owner-occupiers only. You must own and live in the home to use it, which rules out landlords and property developers. If you let out the property, the relevant route is the separate Private Rented Sector Landlord Loan, which offers up to £38,500 in total, with £4,500 towards single-glazing upgrades. For owner-occupiers, the practical test is simply whether you have single glazing worth upgrading and a home where an adviser agrees new windows would help. If you are not sure which schemes across the UK you might qualify for, our grant eligibility checker walks you through the main conditions in a couple of minutes.
It is also worth being clear that this is the Scottish route. England uses ECO4, which runs to 31 December 2026, and the Warm Homes: Local Grant instead, while Wales runs the Welsh Government Warm Homes programme, all of which work on different rules and figures. If you live south of the border, those are the pages to read rather than this one.
How to apply
Applying is straightforward and free, and you should always go through the official Home Energy Scotland route rather than paying a third party to do it for you.
- Use the self-assessment tool. Start with the Home Energy Scotland self-assessment tool to see whether you are likely to be eligible for support towards new glazing.
- Speak to an adviser. If you look eligible, an adviser will talk through your home and the help available, including the interest-free loan for windows.
- Get your home assessed. The adviser assesses the home and recommends the measures that will make the most difference, which may include upgrading your single glazing.
- Confirm your loan amount. Confirm what you can borrow, up to £8,000, or up to £9,500 with the rural uplift if you qualify.
- Arrange the work and claim. Book the glazing with an installer, then claim the interest-free loan towards the cost in line with the assessment.
Whether or not the loan covers your whole job, the same buying rules apply: get more than one quote, check the figures and do not be rushed. If the loan leaves a balance for you to fund, our wider grants hub shows what other help exists across the UK and where most homeowners simply pay privately for a fair price.
Frequently asked questions
For windows it is an interest-free loan, not a non-repayable grant. You borrow up to £8,000 towards upgrading single glazing to double or triple glazing and repay it over time at zero interest. The non-repayable grant is no longer available for windows specifically, although it remains for measures such as insulation and clean heating.
Up to £8,000 as an interest-free loan towards upgrading single glazing to double or triple glazing. A rural uplift of £1,500 raises this to up to £9,500 for remote rural, island and off-grid accessible rural areas, recognising the higher cost of getting work done in those locations.
No. The interest-free loan is for owner-occupiers only, so you must own and live in the home. Landlords and developers cannot use this scheme. A separate Private Rented Sector Landlord Loan offers up to £38,500, with £4,500 towards single-glazing upgrades.
Start with the Home Energy Scotland self-assessment tool. If you look eligible, an adviser assesses your home and recommends the measures that will help most. You then arrange the work and claim the interest-free loan towards the glazing once the assessment supports it.
This loan is the Scottish route only. In England the schemes to look at are ECO4, which runs to 31 December 2026, and the Warm Homes: Local Grant. Our England grants pages set out who qualifies for each and how the funding works.
Not always. The interest-free loan is capped at up to £8,000 (up to £9,500 rural), so on a larger whole-house job you may need to fund the balance yourself. It is sensible to price the work first so you know what the loan does and does not cover.