Free Insulation Grants: Save Up to £300+ Per Year
Last updated:
Several government-backed schemes provide free insulation for UK homes. Proper insulation is the single most effective way to reduce energy bills and keep your home warm.
Types of insulation available
Cavity Wall Insulation
Fills the gap between your inner and outer walls. Suitable for most homes built after the 1930s. Can save around £295/year on energy bills.
Typically free under qualifying schemes
Loft Insulation
Added to the floor of your loft space to prevent heat rising through the roof. Government recommends at least 270mm depth. Saves around £250/year.
Typically free under qualifying schemes
Solid Wall Insulation
For older homes without cavities. Can be applied internally or externally. More expensive but saves up to £400/year on heating.
Grants cover up to £15,000 of costs
Underfloor Insulation
Insulates suspended timber floors to prevent draughts and heat loss. Particularly effective in older properties with raised floors.
May be covered under certain schemes
Available schemes
ECO4 Scheme
The Energy Company Obligation (ECO4) requires large energy suppliers to fund insulation for eligible households. If you receive qualifying benefits or have a low income, you can get insulation installed at no cost. ECO4 operates across England, Scotland, and Wales and has been extended to 31 December 2026. No successor scheme has been announced.
Warm Homes Local Grant
Running from April 2025 to March 2028, this council-administered scheme provides grants for insulation and other energy efficiency measures. Eligibility varies by local authority area.
Warm Homes Plan
The government's flagship £15bn programme includes insulation as a core measure. Low-income households can receive comprehensive insulation packages.
Who qualifies?
You're likely eligible if you:
- Receive benefits such as Universal Credit, Pension Credit, or Income Support
- Have a household income below £31,000-£36,000
- Live in a poorly insulated property (EPC rating D or below)
- Are a homeowner or private tenant (social housing tenants should contact their landlord about available improvements)
Frequently asked questions
What types of insulation can I get for free?
Depending on your property and eligibility, you may receive free cavity wall insulation, loft insulation, solid wall insulation (internal or external), underfloor insulation, or room-in-roof insulation through schemes like ECO4 or the Warm Homes Local Grant.
How much can insulation save on my energy bills?
Cavity wall insulation saves around £295/year, loft insulation saves around £250/year, and solid wall insulation can save up to £400/year. The exact savings depend on your property size and current insulation levels.
Do I need an EPC to get free insulation?
For most grant schemes, your property should have an EPC rating of D, E, F, or G to qualify for free insulation. Our eligibility checker can look up your EPC automatically using your postcode.
Can I get free insulation if I rent?
Yes, tenants can access free insulation through ECO4 or the Warm Homes Local Grant. Your landlord will need to consent to the installation. Social housing tenants should contact their housing provider.
Find Insulation Grants in your area
See how Insulation Grants works in your area, including local council schemes, eligibility criteria, and nearby installers.
Other available grants
Related guides
Cavity Wall Insulation Grants 2026
Free cavity wall insulation — who qualifies and how to apply.
Free Loft Insulation Grants 2026
How to get free loft insulation through ECO4 and Warm Homes Local Grant.
ECO4 Extended to December 2026
ECO4 extended 9 months — what changed and how to apply before the deadline.
Energy Grants for Pensioners 2026
Pensioners can access multiple insulation grants — here's the full guide.
Could you get free insulation?
Check in 2 minutes whether your property qualifies for free insulation grants.
Check Your Eligibility