If you are wondering how old is my boiler, checking its age is a useful first step before considering an upgrade. Older boilers are generally less efficient and may cost more to run than newer heating systems.
For homeowners in England and Wales, the Boiler Upgrade Scheme (BUS) continues to provide financial support for eligible households looking to replace traditional fossil-fuel heating with a low-carbon alternative.
What Is the Boiler Upgrade Scheme?
The Boiler Upgrade Scheme is a UK government grant designed to encourage homeowners to install low-carbon heating systems.
Rather than replacing an old gas or oil boiler with another conventional boiler, the scheme supports technologies such as:
- Air source heat pumps
- Ground source heat pumps
- Certain water source heat pumps
- In some circumstances, biomass boilers
The main purpose is to help reduce carbon emissions while supporting the transition towards cleaner home heating.
How Much Is the Boiler Upgrade Grant in 2026?
For 2026, eligible applicants can receive financial support towards the installation of qualifying low-carbon heating systems. The available grant depends on the type of system being installed.
| Heating System | Potential BUS Support |
|---|---|
| Air source heat pump | Up to £7,500 |
| Ground source heat pump | Up to £7,500 |
| Water source heat pump | Subject to scheme eligibility |
| Biomass boiler | Up to £5,000, where eligible |
If you are planning to replace your existing boiler or install a new heating system, choosing reliable boiler installation services can help ensure the system is installed safely, correctly and in line with the manufacturer’s requirements.
The grant is normally applied towards the installation cost by an approved installer rather than being paid directly to the homeowner.
Important: Scheme rules, eligibility requirements and funding arrangements can change, so homeowners should confirm the current requirements before arranging installation.
Who Can Apply for the Boiler Upgrade Scheme?
The scheme is primarily aimed at homeowners in England and Wales who want to replace an existing heating system with an eligible low-carbon alternative.
You may qualify if:
- You own the property.
- You are replacing an existing fossil-fuel heating system.
- The proposed heating system meets the scheme’s technical requirements.
- The installation is carried out by an installer participating in the scheme.
- Your property meets the relevant energy-efficiency and eligibility conditions.
Landlords and owners of eligible domestic properties may also be able to apply, subject to the scheme rules.
What Heating Systems Are Covered?
The scheme focuses mainly on heat-pump technology because heat pumps can provide efficient heating while using electricity rather than directly burning gas or oil.
Air Source Heat Pumps
Air source heat pumps extract heat from the outside air and use it to heat your home and, where designed to do so, your hot water.
They are generally the most common type of heat pump considered under the scheme.
Ground Source Heat Pumps
Ground source heat pumps take heat from the ground. They can be highly efficient but usually require more space and a more involved installation process.
Biomass Boilers
Biomass boilers can be supported in limited circumstances. They use sustainable materials such as wood pellets to generate heat, but additional eligibility requirements apply.
What Does the Scheme Cover?
The grant is intended to contribute towards the cost of installing an eligible heating system.
However, it does not necessarily cover every expense associated with upgrading your home’s heating.
Potential additional costs can include:
- Changes to radiators or pipework
- Electrical work
- Insulation improvements
- Hot-water cylinder installation
- Removal or alteration of existing heating equipment
- Additional building or installation work
A professional installer should assess the property and explain the expected total cost before work begins.
Why Consider Replacing an Old Boiler?
An older heating system may be less efficient, particularly if it has been operating for many years.
Upgrading can potentially provide:
- Better heating efficiency
- Lower energy consumption
- Reduced carbon emissions
- A more modern heating system
- Improved long-term heating performance
However, a heat pump works differently from a conventional boiler. Your property should therefore be assessed to determine whether it is suitable before making a decision.
How to Prepare for a Boiler Upgrade
Before applying, homeowners can take several practical steps:
- Check your existing heating system – Find out what type of boiler or heating system you currently have.
- Check the property’s suitability – Consider insulation, available space and existing heating distribution.
- Compare installation costs – Look beyond the grant amount and consider the full project cost.
- Use an eligible installer – The installer normally manages the grant application process.
- Ask for a detailed quotation – Make sure you understand what is included and what may cost extra.
Is the Boiler Upgrade Scheme Worth Considering in 2026?
For homeowners planning to move away from traditional fossil-fuel heating, the scheme can make installing a low-carbon heating system more affordable.
However, the grant should not be the only factor in your decision. Installation costs, property suitability, insulation, electricity prices, system performance and long-term heating requirements should all be considered.
Conclusion
The Boiler Upgrade Scheme can provide valuable financial assistance to eligible homeowners who want to move towards low-carbon heating in 2026. Before making a decision, check your property’s suitability, understand the total installation cost and speak with an approved installer about your options.
For a detailed understanding of the government boiler upgrade scheme, homeowners should also make sure they are working with an installer familiar with the latest eligibility requirements and application process.
Frequently Asked Questions
1. What is the Boiler Upgrade Scheme?
The Boiler Upgrade Scheme is a government-backed initiative that provides grants towards eligible low-carbon heating systems, particularly heat pumps, for qualifying properties in England and Wales.
2. How much can I receive under the scheme?
Eligible homeowners may receive up to £7,500 towards certain heat-pump installations, while eligible biomass boiler installations can receive a lower grant amount.
3. Can I get the grant to replace my old gas boiler with a new gas boiler?
No. The scheme is designed to support qualifying low-carbon heating technologies rather than replacing an existing gas boiler with another conventional gas boiler.
4. Do I apply for the grant myself?
The process is generally handled through an installer participating in the scheme. The installer assesses the property, confirms eligibility and manages the relevant grant process.
5. Does my home need to be insulated before installing a heat pump?
Not necessarily in every case, but good insulation can improve the performance of a heating system and may be an important consideration when assessing whether a property is suitable for a heat pump.
