Many homes in the UK built before the 1930s are poorly insulated and lose a lot of heat, making them energy inefficient. Around 15 million homes in Great Britain now have some insulation: 70% have cavity wall insulation, 67% have loft insulation, but only 10% have solid wall insulation. Still, millions of homes are cold, draughty, and expensive to heat, leaving many people struggling with high energy bills.

Poorly insulated homes can increase energy bills by up to £600 a year, especially in F-rated properties. Homes rated F can have very high energy bills, around £4,431 a year, while homes rated C can have much lower bills, about £1,669. Poor insulation can also lead to serious health issues such as damp-related mould, breathing problems, slower child development, and a decline in mental health. In fact, the report says that living in cold homes can make people twice as likely to develop new mental health problems and three times more likely to make existing ones worse. On top of that, UK homes are responsible for around 17% of the country’s carbon emissions, so improving insulation is an important step towards reaching the net-zero emissions target by 2050.

ECO4 is the fourth stage of a government plan to make millions of homes in the UK more energy efficient. Through this scheme, eligible homeowners can apply for an insulation grant to help pay for home improvements, such as loft insulation, solid wall insulation, and other types of insulations that prevent heat loss. These upgrades are often available at little or no cost to the homeowner. This not only helps protect the environment by reducing energy use, but also lowers energy bills over time. The UK government has set specific budgets and rules to target homes that waste the most energy—especially older or poorly insulated properties. The goal is to make UK homes more sustainable, warmer, and better for the environment by cutting carbon emissions. The main aim of ECO4 is to improve energy efficiency in homes by offering insulation grants and related support, helping the government reach its target of making all housing more energy efficient by 2035.

You might be able to get free energy-saving home upgrades through Heat1 if you meet the following conditions:

This means that if you’re struggling with energy costs and meet these conditions, you could receive support through the ECO4 Grant to make your home more energy-efficient.

Loft Insulation: Save Up to 25% on Heat Loss

Loft insulation can reduce heat loss by up to 25% and save about £225–£230 per year on energy bills.

Solid Wall Insulation: Higher Cost, Bigger Savings

Solid wall insulation, whether internal or external, costs more (around £7,500+), but can save approximately £320 per year.

Underfloor Insulation: Added Comfort and Savings

Underfloor insulation improves comfort and can save around £70 per year. Heating controls are also commonly installed as part of ECO4.

Overall Savings from ECO4 Measures

Typical annual energy savings from ECO4 upgrades range from £300 to £400, and can be as much as £730 depending on the improvements made.

Check If You Qualify
Enter your postcode to see if you can take part in the scheme. Heat1’s free grant checker only takes about 60 seconds to complete.

Book Your Installation
After your eligibility is confirmed and your home is inspected, Heat1 will schedule the loft insulation installation. Their experienced engineers will complete the work quickly and with minimal disruption to your routine.

Prepare Your Documents
Make sure you have all the important papers ready, like proof of income, your home’s EPC rating, and any benefit information that shows you qualify for the grant.

Many UK homeowners struggle with rising energy bills due to poor home insulation. Insulation grants, like those offered through the ECO4 scheme, provide vital financial support to help improve home energy efficiency. Through these grants, homeowners can access funding for loft insulation grants and solid wall insulation, which significantly reduce heat loss, lower monthly energy costs, and create a more comfortable living environment. These grants make energy-saving improvements affordable, especially for low-income families and those living in older, harder-to-heat homes. If you want these insulation grants, you may be able to get them for free through Heat1 under the ECO4 scheme.

Improving home insulation is not just about saving money—it’s also a key part of the UK’s plan to reduce carbon emissions and fight climate change. Homes are responsible for around 17% of the country’s carbon footprint, largely due to heat loss. ECO4 grants encourage homeowners to upgrade their insulation and heating systems, reducing energy consumption and lowering greenhouse gas emissions. By participating in these schemes, homeowners contribute to national goals like the Net Zero target set for 2050.

Millions of UK homes continue to lose heat and money due to poor insulation. Fortunately, the ECO4 scheme offers vital support to make your home warmer, more energy-efficient, and more comfortable at no cost. These improvements not only save you money but also help reduce carbon emissions and contribute to the UK’s goal of reaching net zero by 2050. If you think your home might be eligible for insulation or heating upgrades, don’t wait—check your eligibility and apply for ECO4 grants today through the heat1.co.uk website to start saving on your energy bills.