How to Apply for Window Replacement Grants

Keeping your home warm and energy-efficient can be challenging when old windows allow heat to escape. If the cost of new windows is out of reach, a window replacement grant, sometimes called a double glazing grant, could help you save on heating bills while making your property warmer and more comfortable. 

There are several government-backed schemes available, many of which are designed for low-income households or those in fuel poverty. These programmes aim to improve inefficient homes and can sometimes cover the full cost of installation.

In this guide, we’ll walk you through the main grant options, the eligibility criteria, and how to apply step by step.

Available Window Replacement Grants 

While there are no standalone grants exclusively for windows, several schemes include funding for double glazing as part of energy efficiency upgrades. Here’s a summary of the key options currently available:

Scheme	Coverage	Eligibility Summary	Funding Amount	Duration
Energy Company Obligation (ECO4)	Replacing single-glazed windows with double or triple glazing. May include doors and draught-proofing	Low-income households receiving certain benefits; homes with EPC rating D-G	Up to 100% coverage, depending on assessment; no fixed amount	April 2022 – March 2026
Warm Homes: Local Grant	Energy performance upgrades, including double-glazing, low-carbon heating	Low-income households (usually ≤£36,000 annual income) in privately owned homes with EPC D-G	Up to £15,000 per household; full coverage possible	From 2025 – 2028/2029

These schemes prioritise homes that are hard to heat or in fuel poverty, ensuring that window replacement grants go to those who need them most.

Energy Company Obligation (ECO4)

The ECO4 scheme, administered by Ofgem, requires major energy suppliers to fund energy efficiency improvements for vulnerable households. This includes a double-glazing grant for replacing inefficient single-glazed windows with A-rated double or triple glazing, which can significantly boost your home’s EPC rating.

Who Is Eligible for ECO4?

To qualify for this grant for replacement windows:

• Your household must receive at least one qualifying benefit, such as Universal Credit, Pension Guarantee Credit, Child Tax Credit, or Income Support. A full list is available on GOV.UK.
• Your home should have an EPC rating of D, E, F, or G (check yours for free on GOV.UK).
• Private tenants can apply with landlord permission; social housing may also qualify under certain conditions.
• If you don’t meet the standard criteria, you may still be eligible through ECO Flex (also known as LA Flex), which allows local authorities to refer households with incomes under £31,000, health vulnerabilities, or fuel debt.

ECO4 is available across England, Wales, and Scotland, focusing on reducing fuel poverty without requiring upfront payments from eligible applicants.

How to Apply for ECO4 with Pyramid Eco

The ECO4 scheme is part of the UK government’s Energy Company Obligation, but discovering if you qualify and applying can feel overwhelming. Pyramid Eco simplifies the entire process to help you secure your double-glazing grant. 

Here’s how it works:

1. Free Eligibility Check: Tell us a few details about your home and income. Our team instantly checks if you qualify for ECO4 funding. Alternatively, you can check your eligibility using the GOV.UK Help to Heat tool. 
2. Application Support: We handle all the paperwork, saving you time and ensuring accuracy. Processing times vary, but you can expect a decision within weeks.
3. Home Assessment: If you’re eligible and approved, we arrange a quick assessment to determine the best energy-saving improvements for your property. 
4. Installation: Our certified installers replace or upgrade your windows and insulation using ECO4 funding. 
5. Aftercare: We make sure your new installations meet all quality standards and help you understand your energy savings.  

With Pyramid Eco, you don’t have to worry about government forms or technical jargon. We handle everything so you can enjoy a warmer, more energy-efficient home with zero stress. Book a free consultation to get started.

Energy Suppliers Offering ECO4 Upgrades

Under the ECO4 scheme, several energy suppliers offer funding for home energy upgrades. While each supplier has its own criteria and processes, it can sometimes feel stressful contacting them individually and that is where Pyramid Eco comes in. 

Instead of going through the tedious process, you can contact us and we will:

• Check your eligibility for ECO4 support
• Identify the best supplier that suits your situation
• Guide you through the process from start to finish
• Help you understand the upgrades you may qualify for.

If you are unsure where to start or simply want the quickest and most effective way to find out what you are entitled to, contact Pyramid Eco and we will handle the rest. 

Warm Homes: Local Grant

This scheme, launched in 2025 as part of the government’s Warm Homes Plan, provides energy efficiency grants for windows to low-income households in England. It funds upgrades like replacing old windows with double glazing to improve insulation and reduce energy bills, often alongside low-carbon heating options.

Who Is Eligible for the Warm Homes: Local Grant?

• You must live in England in a privately owned home (owner-occupied or rented with permission).
• Household gross annual income is typically £36,000 or less, or you receive benefits like Universal Credit or Child Benefit.
• Your home has an EPC rating of D to G.
• Your postcode must be in an eligible area (check via GOV.UK’s eligibility tool).
• Priority is given to those in fuel poverty, but local authorities have some flexibility.

This window replacement grant targets around 300,000 homes annually, with £500 million allocated for 2025-2028.

How to Apply for the Warm Homes: Local Grant

1. Use GOV.UK’s free eligibility checker to see if you qualify.
2. Provide details about your property, ownership status, income, and benefits.
3. If eligible, your application goes to your local authority (not all participate, so check first).
4. A home assessment will determine the upgrades needed, such as new windows.
5. Approved works are carried out by certified installers at no cost to you.

The entire process is handled through GOV.UK, but you do not have to manage it alone. Our team can quickly check your eligibility, assess your home, and guide you through each step. Book a free consultation to start the process. 

How Much Can You Save with Window Replacement Grants?

The average cost of installing new windows in a 3-bedroom house ranges from £8,000 to £15,000. Qualifying for these energy efficiency grants for windows could cover 100% of costs. Beyond that, new double glazing can reduce heat loss, lowering energy bills by £100-£300 per year, depending on the size of your home. Over time, this also increases your property’s value and EPC rating, making it easier to sell or rent.

What If You’re Not Eligible?

If you don’t qualify for a window replacement grant, consider alternatives:

• Finance options from installers, like interest-free loans.
• Check for local council incentives or scrappage schemes where companies pay for old windows.
• Improve energy efficiency affordably with draught-proofing or secondary glazing.

If you want to explore funded or affordable alternatives, contact us. We can walk you through the best financing and funding options available and handle the work for you.

Get Your Window Replacement Grant

Finding the right grant and applying successfully can be confusing without the right support and that’s where Pyramid Eco comes in. 

As an approved installer, we simplify the funding application process, managing everything from eligibility checks to installation and reporting. Our team handles the details so you can upgrade your property without the stress. We have experience across single homes and larger portfolios, helping landlords improve energy efficiency, meet EPC targets, and access funding without stress.

Are you ready to find out if you qualify? Our team will guide you through your options and help you start saving on your energy bills right away. Book a free consultation to discuss your project.

Frequently Asked Questions