Boiler Upgrade Scheme

What is the Boiler Upgrade Scheme?

The Boiler Upgrade Scheme (BUS), administered by Ofgem on behalf of DESNZ (Department for Energy Security and Net Zero), provides grants for property owners in England and Wales to replace existing fossil fuel heating with low-carbon heating systems.

It provides £7,500 towards the cost of an air-source heat pump (ASHP) or ground source heat pump (GSHP) installation, or £5,000 towards the cost of a biomass boiler.

FIND AN INSTALLER

To be eligible:

You must own your property.
Your property must be a home or small non-domestic building in England or Wales.
The maximum installation capacity of the funded system must be 45kW or 300kWth collective capacity for a shared ground loop.
Your current heating system (where applicable) must be a fossil fuel heating system or an electric heating system that does not include a heat pump.
Your low-carbon heating system must have been commissioned no more than 120 days prior to an application being properly made.
You must own an eligible self-build property where you built it yourself, it has never been owned by a business or organisation and is not part of an excluded development (other additional eligibility criteria may apply).

FIND OUT MORE

Homeowner and installer talking at doorway.

How to access the BUS grant

The key steps below highlight the process for applying for the grant and how Ofgem will process your application.

Step One

Contact an MCS certified installer to get quotes for the work. We recommend you contact at least three installers to obtain quotes.

Step Two

Your installer will confirm that you’re eligible.

Step Three

Agree a quote with your chosen installer. The value of the BUS grant should be deducted upfront as part of the quote.

Step Four

Your installer will then apply for the BUS grant on your behalf through the Ofgem website. They will redeem the voucher once the work has been completed.

What happens next?

Ofgem will contact you to confirm that the installer is acting on your behalf. They might also contact you by phone or visit your property in order to check the installation. If anything is incorrect on the application details, or you have not agreed to an application, contact Ofgem.

CONTACT OFGEM