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Boiler Upgrade Scheme: How to Apply & Grant Guide

boiler upgrade scheme

Navigating the path to a greener home? The Boiler Upgrade Scheme might be your next step.

With grants available for the adoption of heat pumps and biomass boilers in England and Wales, this guide clarifies how to qualify, the heat pump grants, financial perks, and the application process.

Here at Green Central we can help you get a new air source heat pump installation along with assist in getting you the best grants using the BUS – Get a heat pump quote from one of our eco experts now.

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Key Takeaways

  • The Boiler Upgrade Scheme (BUS) is a UK government initiative that provides grants to homeowners in England and Wales for the installation of heat pumps and biomass boilers, helping to reduce carbon emissions and promote energy efficiency as part of the broader 2050 net-zero targets.
  • Homeowners can receive significant financial support through the BUS, with grants covering up to £7,500 for heat pumps and £5,000 for biomass boilers, to alleviate the upfront installation costs and encourage the switch to sustainable heating systems.
  • Eligibility for the BUS requires homeowners to have a property with a valid Energy Performance Certificate (EPC) and no outstanding recommendations for cavity wall or loft insulation. The scheme targets existing homes and is not applicable to new builds still under developer construction.

Understanding the Boiler Upgrade Scheme (BUS)

The Boiler Upgrade Scheme (BUS) is a groundbreaking government grant initiative designed to support the installation of heat pumps and biomass boilers in England and Wales.

Launched on April 1, 2022, as part of the Heat and Buildings Strategy, the scheme aims to run until 2028, offering homeowners a chance to significantly reduce their carbon emissions by upgrading their heating systems.

Administered by Ofgem, the scheme not only promotes energy efficiency upgrades but also aligns with the broader goal of the UK’s 2050 net-zero targets.

Through the BUS, homeowners can:

  • Replace their traditional gas boilers with more sustainable options like heat pumps or biomass boilers
  • Transition to a more sustainable lifestyle
  • Contribute to a greener future.

The Essence of the BUS

Fundamentally, the Boiler Upgrade Scheme strives to decarbonise heat in buildings across England and Wales.

By providing grants for the installation of heat pumps and biomass boilers, the scheme makes it financially feasible for homeowners to adopt low-carbon heating systems.

This initiative is crucial in the fight against climate change, helping to reduce the carbon footprint of homes and move towards a more sustainable energy model.

The BUS functions by providing financial aid, covering a substantial part of the initial costs related to the installation of these advanced heating systems.

This means that homeowners can benefit from modern, efficient heating solutions without the burden of excessive initial expenses, thereby accelerating the adoption of low-carbon technologies.

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Financial Incentives Explained

The financial incentives that the Boiler Upgrade Scheme offers are among its most attractive features. Households can receive grants of up to £7,500 for air and ground source heat pumps, and £5,000 for biomass boilers.

These upfront capital grants are designed to cover the substantial upfront costs of installing these systems, making the transition more accessible to a wider range of homeowners.

The process follows a simple step: the installer applies for the grant on the homeowner’s behalf and the grant sum is subtracted from the initial installation cost.

This system ensures that the financial burden is eased right from the start, allowing homeowners to focus on the long-term benefits rather than the immediate costs.

Moreover, the Boiler Upgrade Scheme’s grants are specifically targeted at the installation phase and do not cover ongoing maintenance or operational expenses.

This focus on upfront payment helps to incentivise the adoption of these sustainable systems, encouraging more homeowners to make the switch and contribute to the UK’s environmental goals.

Key Features of Low Carbon Heating Systems

The Boiler Upgrade Scheme centers around low-carbon heating systems like heat pumps and biomass boilers.

These systems are designed to reduce carbon emissions and increase energy efficiency, making them a crucial part of the transition away from fossil fuel heating systems.

Heat pumps, including air source and ground source varieties, as well as biomass boilers, offer a range of benefits that make them ideal for modern homes.

Biomass boilers utilise renewable energy sources like wood pellets, logs, and other organic materials, providing an environmentally friendly alternative to traditional gas boilers.

On the other hand, air source heat pumps are popular due to their suitability for various properties and their high efficiency levels.

Both options contribute to a significant reduction in carbon emissions, helping homeowners align with the UK’s sustainability goals.

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From Gas to Green: Transitioning Your Home

Shifting from a gas boiler to a low-carbon heating system marks a major move towards reducing your home’s carbon emissions and decreasing reliance on the gas grid.

The Boiler Upgrade Scheme was specifically established to decrease carbon emissions from UK homes, contributing to the ambitious 2050 net-zero targets.

This transition involves understanding the benefits and challenges associated with different low-carbon technologies, such as:

  • Heat pumps
  • Biomass boilers
  • Solar thermal systems
  • District heating systems

By exploring these options, you can make an informed decision about the best low-carbon heating system for your home.

Electric combi boilers, which are compact and use electricity for heating and hot water, are a suitable option for smaller homes.

Meanwhile, heat pumps, known for their efficiency and lower maintenance needs, present a viable alternative to traditional fossil fuel heating systems.

However, it’s important to note that while heat pumps offer long-term savings, their installation can be more expensive and time-consuming compared to conventional gas boilers.

By fully replacing your existing fossil fuel systems with a heat pump or biomass boiler, you can not only reduce your energy bills but also enhance your home’s energy security.

This transition is not just an upgrade; it’s a commitment to a greener and more sustainable future.

Maximising Efficiency with Energy Saving Materials

Focusing on the overall energy efficiency within the property is vital to ensure that low-carbon heating systems operate at their peak efficiency.

Chosing the best heat pump is all good and well, but if your home is leaking this heat, then it will not be used to maximum affect.

This includes implementing energy-saving materials such as loft insulation and cavity wall insulation, which can significantly reduce heat loss.

These measures ensure that the installed low-carbon heating systems function optimally, maintaining a comfortable home environment while minimising energy consumption.

Pairing energy-saving materials with low-carbon heating technologies not only optimises energy savings but also enhances the effectiveness of the Boiler Upgrade Scheme.

By improving the insulation and overall energy efficiency of your home, you can make the most of your new heating system, ensuring it performs at its best.

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For homeowners wanting to leverage this initiative, it is crucial to comprehend the eligibility criteria of the Boiler Upgrade Scheme.

Homeowners, including those with businesses, second homes, or rental properties in England and Wales, can apply for the BUS if their property meets certain insulation criteria and has a valid Energy Performance Certificate (EPC).

The EPC must show no outstanding recommendations for cavity wall or loft insulation to qualify for a BUS voucher.

Moreover, the installation of the eligible heating system must be completed within 120 days from the date of the grant application to maintain eligibility.

It’s also worth noting that receiving previous funding for energy efficiency improvements does not disqualify a property from the BUS grant, making it accessible to a broader audience.

Are You Eligible? Property Owner’s Checklist

To verify if your property qualifies for the Boiler Upgrade Scheme, you must ensure it adheres to specific insulation requirements.

The property must have an Energy Performance Certificate (EPC) with no outstanding recommendations for loft or cavity wall insulation.

This checklist is a crucial step in the application process, as it ensures that your home is adequately insulated to benefit from the low-carbon heating system fully.

Meeting these criteria not only makes you eligible for the BUS but also guarantees that your home is prepared to maximise the efficiency of the new heating system. Proper insulation helps in maintaining a comfortable indoor environment while reducing energy consumption and costs.

Exclusions and Considerations

While the Boiler Upgrade Scheme is accessible to many, certain properties are excluded from eligibility. The following properties are not eligible for the BUS grant:

  • New build properties that are still under construction by developers
  • Properties that have been owned by a business or organisation
  • Properties that have been previously owned by someone other than the current owner or original owner

However, self-build properties are eligible for the BUS grant, provided they have never been owned by a business or organisation, and the owner or original owner constructed them.

These exclusions and considerations ensure that the grants are directed towards properties that can immediately benefit from the installation of low-carbon heating systems.

Understanding these criteria can help homeowners better prepare their applications and avoid any potential disqualifications.

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Step-by-Step Application Process for the BUS

The application for the Boiler Upgrade Scheme necessitates:

  • Choosing an MCS-certified installer who will oversee the application process for you
  • The installer applies for the grant and handles the voucher redemption process, ensuring a smooth and efficient transition to a low-carbon heating system
  • This partnership is crucial, as the installer ensures that all necessary steps are followed, from application to installation.

The Department for Business, Energy & Industrial Strategy (BEIS) outlines the process, while Ofgem administers the scheme, providing guidance and processing applications.

This collaborative approach ensures that homeowners receive the support they need throughout the process.

Partnering with Professionals

Collaborating with an MCS-certified installer is vital to gain access to the Boiler Upgrade Scheme.

MCS certification is a mark of quality, indicating that the installer meets industry standards and has the competence to install low-carbon heating systems compliantly.

Homeowners can use tools like the MCS ‘Find a Contractor’ to locate certified installers who are qualified to participate in the BUS.

Consulting with an MCS-certified installer ensures that your property is assessed for suitability, and the installer manages the entire application process, from initial consultation to final installation.

This professional partnership guarantees a seamless experience, ensuring that you can make the most of the BUS grant.

Securing Your Grant Voucher

Obtaining the BUS grant voucher requires the following steps:

  1. The installer applies on the homeowner’s behalf.
  2. The installer subtracts the grant sum from the total installation cost.
  3. Once the heat pump system is installed and commissioned, the installer redeems the voucher with Ofgem.
  4. Ofgem generally processes the voucher within 12 working days.

If a homeowner applied for the scheme before October 23, 2023, and their installer has not yet installed the new heat pump, they can request the installer to cancel the original application and reapply to potentially claim a higher grant amount.

This flexibility ensures that homeowners can benefit from the most current funding available.

In cases where the voucher expires before the system is fully commissioned and certified, the homeowner must reapply for a new voucher, which would place them at the end of the current processing queue.

This step ensures that the grant is used effectively and the installation is completed within the stipulated timeframe.

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Calculating Your Savings with the Boiler Upgrade Scheme

Transitioning to a low-carbon heating system can yield substantial yearly savings. For instance, homeowners can save an estimated £295 per year when compared to an outdated, G-rated gas boiler.

For semi-detached three-bedroom homes, the savings can be even higher, reaching up to £1,100 annually.

The Boiler Upgrade Scheme not only covers a substantial portion of the installation cost but also offers long-term financial benefits by reducing energy bills and enhancing property value.

This dual benefit makes the scheme a worthwhile investment for homeowners looking to upgrade their heating systems.

What Will Your New Heating System Cost?

With the inclusion of the BUS grant, the cost of installing a low-carbon heating system like an air source heat pump or a ground source heat pump becomes more akin to a new fossil fuel boiler.

The grant can cover around 60% of the installation cost, making it a financially viable option for many homeowners.

However, running an air source heat pump may incur additional annual costs compared to a gas boiler, which homeowners need to consider.

While the grant significantly reduces the upfront costs, homeowners must still finance the remaining cost of the installation.

This investment is offset by the long-term savings on energy bills and the environmental benefits of switching to a low-carbon heating system.

Long-Term Benefits for Your Wallet and the Environment

The benefits of installing a low-carbon heating system include:

  • Immediate cost savings
  • Long-lasting benefits
  • Reduced electricity bills
  • Enhanced energy independence
  • 0% VAT cut on installation costs
  • Increased efficiency and longevity of the heating system

This combined approach not only reduces your financial burden but also improves the overall efficiency and sustainability of your home heating.

Additionally, upgrading to a low-carbon heating system can offer the following benefits:

  • Significantly increase the value of your property
  • Attract potential buyers who are looking for energy-efficient homes
  • Contribute positively to the environment by reducing your home’s carbon footprint

This investment not only benefits your wallet but also has a positive impact on the environment.

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Additional Support and Resources

Finding one’s way through the Boiler Upgrade Scheme and the wider realm of renewable energy can be daunting.

Fortunately, homeowners have access to a range of resources and support mechanisms to help them through the process.

The Energy Saving Trust, for example, offers valuable information on the Boiler Upgrade Scheme and other renewable energy initiatives as part of the UK’s Net Zero Strategy.

Additionally, the government has established a dedicated helpdesk for the BUS, providing assistance on eligibility and application procedures.

Public and private entities in the UK also offer various renewable energy grants that can complement the BUS.

These grants aim to foster energy innovation and efficiency projects, increasing public awareness of energy issues and providing financial support for home energy improvements.

By exploring these additional resources, homeowners can maximise their benefits and ensure a smooth transition to a more sustainable heating system.

Where to Find Help

Numerous organisations and resources can provide guidance and support for the Boiler Upgrade Scheme.

The scheme administrator and nationally recognised standards organisations, such as MCS, are excellent starting points for homeowners seeking help with the BUS.

These organisations provide detailed information on the application process, eligibility criteria, and certified installers.

Furthermore, public and private entities across the UK offer additional support for green and renewable energy projects. These resources include:

  • Financial assistance
  • Promotion of energy efficiency and innovation
  • Help for homeowners to navigate the renewable energy landscape and make informed decisions about their home heating systems.

Understanding Renewable Energy Options

Besides the Boiler Upgrade Scheme, homeowners can exploit a variety of renewable energy technologies to boost their home’s efficiency and sustainability.

Solar water heating systems, for instance, use rooftop solar collectors to gather sunlight and heat water, potentially supplying between 40% to 80% of space heating needs. Similarly, micro-CHP systems generate both heat and electricity simultaneously, maximising the use of fuel energy and offering a low-carbon option for homeowners.

Solar panels can be installed to run alongside and power heat pumps or very small electric boilers in less demanding situations, especially when used with a solar battery or storage.

Residents in Scotland and Northern Ireland also have access to alternate funding mechanisms for home energy efficiency improvements.

In Scotland, interest-free loans or grants are available, while homeowners in Northern Ireland can explore local grants aimed at fostering energy-saving measures.

These renewable energy options provide homeowners with a range of solutions to reduce their carbon footprint and enhance their home’s energy efficiency.


The Boiler Upgrade Scheme represents a significant opportunity for homeowners in England and Wales to transition to low-carbon heating systems, reduce their carbon footprint, and contribute to the UK’s 2050 net-zero targets.

By understanding the essence of the scheme, the financial incentives available, and the application process, homeowners can make informed decisions and take advantage of this government initiative.

Switching to a low-carbon heating system not only offers long-term financial benefits through reduced energy bills but also enhances property value and environmental sustainability.

With additional support and resources available, homeowners can navigate the renewable energy landscape and maximise the benefits of the Boiler Upgrade Scheme.

Embrace this opportunity to transform your home, save money, and contribute to a greener future.

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Frequently Asked Questions

What is the Boiler Upgrade Scheme?

The Boiler Upgrade Scheme (BUS) is a government grant initiative in England and Wales for installing heat pumps and biomass boilers to improve energy efficiency and reduce carbon emissions.

How much funding can I receive through the BUS?

You can receive up to £7,500 for air and ground source heat pumps and £5,000 for biomass boilers, significantly covering the upfront installation costs.

What are the eligibility criteria for the Boiler Upgrade Scheme?

To be eligible for the Boiler Upgrade Scheme, your property must have a valid Energy Performance Certificate (EPC) with no outstanding recommendations for cavity wall or loft insulation, and the installation must be completed within 120 days of the grant application. Take these criteria into consideration for participation.

How do I apply for the Boiler Upgrade Scheme?

To apply for the Boiler Upgrade Scheme, homeowners should choose an MCS-certified installer to handle the grant application and voucher redemption process, as well as manage the installation.

What are the long-term benefits of installing a low-carbon heating system?

Installing a low-carbon heating system can lead to significant savings on energy bills, increase property value, and reduce your home’s carbon footprint. It also enhances energy independence and supports environmental goals.

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