The ECO4 scheme provides free energy-efficiency upgrades to low-income and vulnerable households, funded by a levy on energy suppliers. The Energy Company Obligation (ECO4) targets homes with an Energy Performance Certificate (EPC) rating of D, E, F or G, offering measures like insulation, heat pumps and solar panels at no upfront cost (GOV.UK, 2026).
Eligibility is not universal. You must receive a qualifying benefit, such as Pension Credit, Universal Credit or Income Support, or live in social housing with a low EPC rating. The scheme runs from 2022 to March 2026, with installs continuing until March 2027. If you do not meet the benefit criteria, you may still qualify under the LA Flex route, where your local authority can refer you based on health or income vulnerability.
Eligibility depends on benefits and EPC rating
To access ECO4 funding, your household must be receiving at least one qualifying means-tested benefit. These include Child Tax Credit (with income under £16,190), Working Tax Credit, Housing Benefit and Income-based Jobseeker’s Allowance (GOV.UK, 2026). Your home must also have an EPC rating of D, E, F or G, meaning it loses significant heat. If you own the property or rent privately, you can apply. Social housing tenants can also qualify if the home falls below EPC band C.
Measures covered include insulation heating and renewables
ECO4 funds a range of improvements based on what your home needs. Typical measures include loft insulation, cavity wall insulation, solid wall insulation, underfloor insulation and draught-proofing. Heating upgrades cover air source heat pumps, ground source heat pumps and solar thermal panels. Solar PV panels are also available if they support the heating system. The Energy Saving Trust notes a typical heat pump can cut heating costs by up to 30% compared to an old gas boiler (Energy Saving Trust, 2026).
Application process involves an installer and grant approval
You do not apply directly to the government. Instead, you contact an Ofgem-approved installer or a local authority scheme. The installer assesses your home, checks eligibility and submits the grant claim to the energy supplier. The supplier must approve the funding before work begins. All installations must use TrustMark-registered contractors to ensure quality and consumer protection (TrustMark, 2026). The process typically takes four to twelve weeks from application to completion.
A worked example
A typical 1930s semi-detached home in Manchester with an EPC rating of E could receive a full fabric-first upgrade under ECO4 at no upfront cost. The scheme covers cavity wall insulation, loft insulation to 270mm, and a first-time central heating system with an air source heat pump. The energy supplier organises the full installation through an approved TrustMark or MCS-certified installer. According to the Energy Saving Trust, a home of this type can save around £395 per year on heating bills after the upgrades, with total carbon savings of roughly 1,200 kg CO₂ annually. The work is fully funded by the ECO4 obligation, so the homeowner pays nothing. The only requirement is that the household meets the benefit eligibility criteria and the home has an EPC rating of D, E, F or G.
| Item | Figure |
|---|---|
| Upfront cost after grants | £0 |
| Yearly savings | £395 |
| Payback period | Immediate (no cost) |
| 25-year lifetime savings | £9,875 |
What homeowners often get wrong
The most common mistake is assuming ECO4 covers any home regardless of EPC rating or benefits status when eligibility is tightly defined. Here are three frequent errors homeowners make
- Thinking any home qualifies Many homeowners believe ECO4 is available to all UK households. The scheme only applies to homes with an EPC rating of D, E, F or G, and only if someone in the household receives a qualifying means-tested benefit. Applying without checking these criteria wastes time and delays genuine applications.
- Believing ECO4 pays cash directly Some assume the funding comes as a bank transfer or cheque. ECO4 does not pay cash to homeowners. It covers the full cost of installation work carried out by an approved supplier. Attempting to claim cash for a DIY project voids eligibility entirely.
- Overlooking the LA Flex route Homeowners without a qualifying benefit often give up too soon. The Local Authority Flexible Eligibility (LA Flex) programme allows councils to refer households based on low income, health conditions or living in a cold home. This route can unlock funding for thousands who do not receive benefits.
Quick reference
- ECO4 runs from 2022 to March 2026 with installations completed by March 2027.
- Your home must have an EPC rating of D, E, F or G to qualify for funding.
- You must receive at least one qualifying benefit such as Pension Credit, Universal Credit or Income Support.
- The Local Authority Flexible Eligibility route can help homeowners who do not receive benefits but have low income or health issues.
- All installations must be carried out by a TrustMark or MCS-certified installer to meet scheme requirements.
Frequently Asked Questions
Yes, homeowners can get free upgrades if they receive a qualifying benefit and have an EPC rating of D-G. The energy supplier arranges and pays for approved measures like insulation or a heat pump.
Qualifying benefits include Pension Credit, Universal Credit, Income Support, and Child Tax Credit with income under £16,190. GOV.UK lists all eligible benefits and their conditions.
Yes, private tenants can apply if they receive a qualifying benefit and the property has an EPC rating of D-G. Landlord permission is required, but the funding covers the upgrades at no cost.
The ECO4 scheme runs from 2022 to March 2026, with installations allowed until March 2027. After that, a new obligation period will begin.
The LA Flex route lets your local authority refer you for ECO4 funding if you don't receive a standard benefit but have health or income vulnerability. Ofgem sets the criteria for this alternative path.
