If you’re searching for ECO4 Scheme Installers hoping to upgrade your windows or doors, here’s the short answer: no, the ECO4 scheme does not fund window or door replacements. But before you write it off, it’s worth knowing what the scheme does cover—and how it can still benefit your home.
What Is the ECO4 Scheme?
The Energy Company Obligation (ECO4) is a government-backed programme aimed at helping households lower their energy bills and reduce carbon emissions. Running from 2022 to 2026, the scheme focuses on improving the energy efficiency of low-income and vulnerable households.

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Why Windows and Doors Aren’t Included
Although new windows and doors can improve insulation, the scheme prioritises core energy-saving measures that deliver a higher impact on overall efficiency ratings. The goal is to lift homes to at least an Energy Performance Certificate (EPC) rating of C or higher, focusing on heating systems and insulation first.
What Can You Get Through ECO4?
Here’s what you may be eligible for under the ECO4 scheme:
- ✅ Loft Insulation – Helps trap heat in the home and reduce energy loss through the roof.
- ✅ Cavity Wall Insulation – Ideal for homes built with cavity walls. This slows heat loss and cuts energy use.
- ✅ Internal Wall Insulation – Improves solid wall homes, especially where external insulation isn’t possible.
- ✅ Room-in-Roof Insulation – Used for converted loft spaces or attic rooms to stop heat escaping.
- ✅ First Time Central Heating – If your home doesn’t already have central heating, ECO4 can fund a full install.
- ✅ Electric Storage Heater Upgrades – Replaces old, inefficient heaters with modern, energy-efficient models.
- ✅ Air Source Heat Pumps (ASHPs) – Low-carbon heating systems that work well in well-insulated homes.
- ✅ Solar Panels (PV) – Helps generate renewable energy, reducing dependency on the grid.
- ✅ Smart Heating Controls – Thermostats and zoning systems to better control heating and cut waste.

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Who Is Eligible for ECO4?
You may qualify if:
- You own or privately rent your home
- Your household income is below a certain threshold
- Someone in the home receives qualifying benefits
- Your home has a poor EPC rating (typically D–G)
A qualified installer will carry out an assessment to confirm your eligibility.
How to Find the Right Installer
Choosing the right provider is key to getting the most from ECO4. From assessments to final installation, a good installer will guide you through every step. This article on ECO4 Scheme Installers offers advice on picking experienced, certified professionals who understand the rules and funding process.
Final Thoughts
While ECO4 won’t fund new windows and doors, it still offers valuable home upgrades that can cut bills, boost comfort, and increase your property’s value. Explore your options, get a free assessment, and make sure you’re working with a trusted installer.