Boiler Upgrade Scheme (BUS)

This scheme is open in England and Wales. 

The Boiler Upgrade Scheme (BUS) is a government scheme that provides upfront grants to help reduce the cost of installing heat pumps and biomass boilers in homes and non-domestic buildings. 

The scheme is installer-led. Installers who are MCS certified can apply for and redeem Boiler Upgrade Scheme vouchers on behalf of property owners. 

Property owners considering installing a heat pump or biomass boiler can apply to the Boiler Upgrade Scheme through an MCS certified installer to help reduce the upfront cost. 

Applying for a heat pump grant 

The Boiler Upgrade Scheme provides grants towards the installation of:  

• £7,500 off the cost and installation of air-to-water heat pumps, ground source heat pumps and water source heat pumps
• £2,500 off the cost and installation of air-to-air heat pumps for residential properties only
• £5,000 off the cost and installation of biomass boilers  

Our role 

Ofgem is the scheme administrator. We are responsible for running the scheme in line with the regulations, including processing voucher applications and payments, publishing guidance, and monitoring compliance. 

Government's role 

The Department for Energy Security and Net Zero is responsible for the scheme policy and legislation.