UK Grants for Boilers

ECO grant boilers: products available for UK homeowners

As energy costs continue to rise, UK homeowners are increasingly looking for ways to make their homes more energy-efficient. One of the most impactful upgrades you can make is replacing your old, inefficient boiler. But did you know that you might be eligible for a UK grant to help cover the cost of grant boilers?


In this blog, we’ll explore the different types of boiler grants available, focusing on the non-condensing boiler upgrade grants under the Energy Company Obligation (ECO4) and the Boiler Upgrade Scheme for transitioning to heat pumps.

Boiler Grants Explained | ECO4 Scheme

ECO4 scheme: upgrade non-condensing boilers to energy-efficient products

The Energy Company Obligation (ECO) is a government scheme designed to help reduce carbon emissions and tackle fuel poverty. ECO4, the latest phase of the scheme, offers grants to eligible homeowners for upgrading their outdated non-condensing boilers to more efficient condensing models.

Combi boilers explained: central heating boiler and water heater in a single unit

A combi boiler is a combination of a central heating boiler and a water heater, providing heating and hot water for taps and radiators from a single unit. A combi boiler solution is an excellent choice for small to medium-sized homes. It saves space and eliminates the need for separate water tanks or cylinders.

Why upgrade to a combi boiler?

Non-condensing boilers waste a significant amount of energy as heat escapes through the flue system. In contrast, condensing boilers are designed to capture and reuse this heat, making them far more efficient.

By upgrading, homeowners can:

  • save on energy bills: condensing boilers are up to 90% efficient, meaning they use less fuel to heat your home.
  • reduce carbon footprint: more efficient boilers mean lower carbon emissions, helping to combat climate change.
  • improve home comfort: another significant combi boiler benefit is that it can provide more reliable and consistent heating.

Looking for more on eligibility and application?

To qualify for a grant under ECO4, you must meet certain criteria, including being vulnerable or having a low-income or health condition or through receiving specific benefits. The application process typically involves:

  • Online assessment: A really quick online form to check eligibility
  • Desktop Assessment: An accredited installer will assess your current boiler and home energy efficiency.
  • Application Submission: If you qualify, the installer will help you submit your application.
  • Installation: Once approved, the new boiler is installed, often at no cost to you. You might even receive additional home heating upgrades, such as insulation, SMART heating controls and ventilation installed at your property as part of the package, as the installer has to improve your property by a minimum amount.
Boiler Grants Explained | Boiler Upgrade Scheme

ECO4 and Boiler Upgrade Scheme (BUS) for heat pumps

For those looking to embrace greener technology, both the ECO4 grant scheme and the Boiler Upgrade Scheme offer grants for replacement of traditional boilers with heat pumps. These initiatives are part of the UK’s push towards net-zero carbon emissions by 2050.

If your property qualifies for a heat pump through ECO4, the installation is likely to be 100% funded and free. To be eligible for a heat pump under ECO4, you will need to have an old gas boiler or other inefficient heating system, such as an oil boiler or lpg boiler, so that the air source heat pump will improve the heating efficiency in your home. If either your home or your circumstances don’t qualify for ECO4, then the Boiler Upgrade Scheme is the alternative, as it provides funding to all UK homeowners.

ECO4 V Boiler Upgrade Scheme – which is best?

ECO4 scheme inclusions

  • 100% funded cost and installation of an air source heat pump
  • 100% funded installation of insulation
  • 100% funded installation of solar PV (eligible properties only)
  • 100% funded ventilation

The Boiler Upgrade Scheme

The Boiler Upgrade Scheme now includes grant options for oil boilers, helping homeowners upgrade their heating systems to more energy-efficient models.

Boiler Upgrade Scheme Inclusions:

  • £7,500 off the cost and installation of an air source heat pump
  • £7,500 off the cost and installation of a ground source heat pump
  • £5,000 off the cost and installation of a biomass boiler

What are heat pumps?

Heat pumps are a renewable energy technology that extracts heat from the air or ground to heat your home and water. They are highly efficient and can significantly reduce your energy consumption.

Benefits of heat pumps

  • eco-friendly: heat pumps produce fewer greenhouse emissions compared to gas or oil boilers.
  • lower running costs: although the initial installation cost is higher, the running costs are generally lower, offering long-term savings.
  • year-round use: as well as providing a heating solution for warmth in colder weather, heat pumps can also provide cooling in the summer, making them a versatile solution 365 days per year.

How to apply for the Boiler Upgrade Scheme

Eligibility for the Boiler Upgrade Scheme is broader than ECO4, making it accessible to more homeowners.

The process includes:

  1. Online assessment: a really quick online form to check eligibility
  2. Contacting a certified installer: only accredited installers can apply for the grant on your behalf.
  3. Home assessment: the installer will assess your home to determine the most suitable heat pump system. This includes the measurement of various outputs to ascertain existing efficiency and effectiveness.
  4. Grant application: the installer will handle the application process. If approved, you’ll receive a grant towards the installation cost.

Making the optimal choice: tracking energy savings and sustainability with boiler upgrades

Deciding between upgrading to a condensing boiler or transitioning to a heat pump depends on your specific circumstances, including your current heating system, budget, and long-term energy goals. Both options offer substantial benefits, but here are a few tips to help you decide.

Short-term savings:

If your priority is immediate savings and you have an older non-condensing boiler, upgrading to a condensing boiler might be the best option.

Long-term sustainability:

If you’re looking to make a long-term investment in your home’s energy efficiency and reduce your carbon footprint, a heat pump is an excellent choice.


Upgrading your boiler is a smart move for any UK homeowner looking to save on energy bills and reduce their environmental impact. With grants like those for combi boilers available under the ECO4 Scheme for non-condensing boiler upgrades and the Boiler Upgrade Scheme for heat pumps, there’s never been a better time to make the switch.

Still unsure or need more information?

Our website exists to provide you with all of the information you could need about these UK government schemes, but if you have a question and can’t seem to pin down the answer, don’t hesitate to email us for further help.

Take the next step: check your eligibility today

At Energy Saving Genie, we’re here to help you navigate the options and find the best solution for your home. Check your eligibility today to find out if you qualify for a very generous boiler grant and start your journey towards a more energy-efficient home (for free or at a massively discounted rate).