Image of an exterior house wall
Image of an exterior house wall

Cavity wall insulation grants

Are you looking to insulate your home and become more energy efficient?

Save up to a third1 on your energy bills with cavity wall insulation.

Check your eligibility

Free cavity wall insulation

The most effective way to prevent heat loss in your home is with insulation, and no matter what time of year it is, cavity wall insulation is always working to keep you warm in the winter and cool in the summer. If you’re eligible as part of our energy efficiency grants and schemes, we’ll install cavity wall insulation free of charge, and you don’t need to be an E.ON customer to benefit.

25-year guarantee

We're Qualitymark accredited, so your insulation comes with an insurance-backed guarantee (IBG). Giving you peace of mind. 

Save on heating

By filling the gaps in your cavity wall, you could save up to a third1 on your energy bills each year.

Quick and easy

Installation usually takes a couple of hours, depending on the size of your home.

Get free cavity wall insulation from E.ON

The good news is that, depending on your eligibility, we may be able to offer you a free insulation grant. The typical installation cost is £27002. Through green homes funding programmes, we are collaborating with the government and local councils to provide free cavity wall insulation to eligible homes throughout the UK. These energy efficiency grants exist to aid homeowners and private renters who are on a low income or receiving a means-tested benefit to improve the energy efficiency of their homes.

If your walls are incorrectly insulated, around one-third of all the heat produced in your home could be lost. Depending on when your house was built, it can have cavity walls. If these walls aren't insulated, heat escapes, and you wind up paying extra.

You may also be eligible for other energy efficiency measures. Learn more about green homes grants and funding.

Why not see if you’re eligible and start benefiting from:

  1. Creating a more energy-efficient home
  2. A warmer, more cosy home
  3. Lowering your carbon emissions
See what grants you qualify for

Am I eligible for a cavity wall insulation grant?

There are a number of different government grants and funding schemes to help homes across the UK become more energy efficient. They’re available to help homeowners and private renters who are on a low income or receive a means-tested benefit.

Our grants and funding schemes are designed to not only help with energy efficiency but also reduce carbon emissions. And what’s even better, we’ve taken the hassle out of you finding the right funding, let our grant finder do all the hard work for you. Just complete our quick and easy questionnaire, and you could have an answer in minutes if you’re eligible.

Eligibility criteria for funding

If you're a homeowner or private renter and someone in your home receives any of the following means-tested benefits, your household income is less than £31,0003, and your home has an EPC rating of D4, E, F, or G – you could qualify for funding:

  • Child Tax Credits

  •  Child Benefit

  • Council Tax Benefit

  • Housing Benefits

  • Income Related Employment and Support Allowance

  • Income Support or Pension Credit Guarantee Credit

  • Pension Savings Credit

  • Social Fund (Sure Start Maternity Grant)

  • Working Tax Credit 

  • Universal Credit

  • Cold Weather Payment

  • Funeral Payment

What happens next?

Apply online

Use our green homes grant finder to check your eligibility and discover any available energy efficiency measures for your home.

Your phone consultation

When you've booked your phone consultation, one of our advisors will call within your selected 1-hour time slot to discuss which measures you could be eligible for.

Eligibility checks

We'll check to see if you qualify for green homes funding, and if not, we'll try to help you get the support you need.

If you rent your home

We’ll need to get your landlord's permission along with discussing their contribution towards the measure, as required. This will be done before your home visit.

Home survey

If you're eligible, our assessors will be in touch to arrange a visit to discuss which energy efficiency measures are best for your home.

Installation time

We'll book your installation at a time that suits you. Then we'll send one of our TrustMark-registered installers to come out and do the rest.

Social housing funding available

We're working in partnership with councils and social housing providers to improve the energy efficiency of homes across the UK.

If you’re a tenant of a social housing provider, you could still be able to take advantage of our funding options. Just click on our grant finder, and it’ll work out if we’re doing any funded work in your area.

Check your eligibility

More about insulation

You're in safe hands

We have been installing cavity wall insulation for a number of years to help reduce energy bills by improving the energy efficiency of UK homes and to helping to raise their EPC rating.

We only use qualified experts to install measures who are TrustMark and MCS registered, so you can relax knowing that your cavity wall insulation will be fitted proffessionally.

 

Check your eligibility
Image of an EPC rating with a bar chart showing a D rated home
Image of an EPC rating with a bar chart showing a D rated home

What is an EPC rating?

Every home in the UK has an energy efficiency rating called an Energy Performance Certificate (EPC). The EPC provides a property with a rating from A, being the most efficient, to G, being the least efficient. So improving your home's EPC rating will help reduce your energy bills and cut down on your carbon emissions, and it could also increase the value of your home. You can check your EPC rating here.

Funding FAQs

Other grants available