Government Grants for Double Glazing

Last reviewed: 26 October 2026

There is no dedicated government grant that is aimed specifically at double glazing. However, some schemes can pay for new windows as part of a wider package of energy efficiency improvements, and loans are available in some parts of the UK. This guide explains what is on offer, who may qualify and what to check before you pay for new windows.

Can you get a government grant for double glazing?

Not usually as a stand-alone grant. The Federation of Master Builders says there are no government grants specifically for double glazing, but several schemes can fund windows as part of wider work. Whether windows are included depends on your home, your income, where you live and the scheme.

Schemes also change often, so check the latest details with the scheme provider before you apply.

How can I get a grant for double glazing with the Energy Company Obligation (ECO4)?

ECO4 is a government scheme that requires larger energy suppliers to fund energy efficiency measures in eligible low income and vulnerable households. It runs in England, Scotland and Wales, and it is due to end on 31 December 2026. Ofgem describes the aim as promoting measures such as insulation or an upgraded heating system.

Ofgem’s scheme page does not list windows or glazing as measures. The Federation of Master Builders says that any funding for double glazing is given only as part of a wider package. Applications are also becoming less likely to succeed as the scheme approaches its end. Our guide to the Energy Company Obligation explains who may qualify and how it is applied.

What is the Warm Homes: Local Grant?

The Warm Homes: Local Grant is a government-funded scheme in England. Local authorities deliver the work, and occupants do not contribute to the cost. GOV.UK gives insulation, solar panels and an air source heat pump, where suitable, as examples of the upgrades. The GOV.UK page does not mention windows or glazing, although the Federation of Master Builders says that eligible households could receive support for double or triple glazing.

To be eligible, a household must generally be in England, on a low income, in a privately owned home (either owner-occupied or privately rented) and with an Energy Performance Certificate (EPC) rating between D and G. Local authorities can also verify households that fall outside the eligible postcode list. Contact your local council to find out whether it runs the scheme and what it covers.

What help is available in Scotland, Wales and Northern Ireland?

• Scotland: Home Energy Scotland offers grants and optional interest-free loans for eligible home energy improvements. Its scheme includes interest-free loans of up to £8,000 for double glazing, triple glazing and secondary glazing, but this funding is only available to improve existing single glazing, not to replace or upgrade existing double, triple or secondary glazing. Grants are not available for glazing under this scheme. You must own the property and use it as your only or main home in Scotland. You do not need to receive benefits to qualify. Funding is subject to eligibility, availability and the scheme’s terms and conditions. Contact Home Energy Scotland on 0808 808 2282 to check whether your planned work qualifies.
• Wales: The Welsh Government’s Home Improvement Loan scheme offers eligible households interest-free loans of up to £35,000 for essential home repairs and improvements. Local authorities manage the scheme, set their own eligibility criteria and may charge an administration fee. Contact your council to ask whether replacing your windows could qualify.
• Northern Ireland: The Affordable Warmth Scheme is continuing, with the Warm Healthy Homes Fund planned as its replacement from April 2027. Contact the NI Energy Advice Service or check NI Direct for current eligibility and available support. The scheme may be available to you if you:
  • live in Northern Ireland
  • own and occupy your property as your main home
  • have a life interest arrangement in the home
  • rent from a private landlord
  • have a total annual gross income of less than £23,000

The property must not be a holiday home, bed and breakfast or a commercial establishment. 

What if you cannot get a grant?

If you can’t get a grant, there are still ways to improve your windows without spending more than you need to. Get quotes from a few installers so you can compare prices. If you’re considering finance, check the interest rate and any extra fees before committing.

You may not need to replace every window. Repairing damaged windows or replacing only those in the worst condition could cost less. You could also consider secondary glazing or draught-proofing to help keep your home warmer.

Before choosing an installer, check that they’re registered with a recognised competent person scheme, such as FENSA. This helps ensure the work meets building regulations. Be wary of unexpected callers or anyone promising a free grant without clearly explaining the scheme and its eligibility rules.

Better windows are only one way to cut your bills. Our guide to energy grants and schemes covers other support, including help with heating and insulation. Compare energy deals with Switchcraft to explore available tariffs and see whether you could save.