The Boiler Upgrade Scheme (BUS) supports the decarbonisation of heat in buildings. It provides upfront capital grants to support the installation of heat pumps and biomass boilers in homes and non-domestic buildings in England and Wales. 

Acting on behalf of property owners, installers can apply for: 

• £7,500 off the cost and installation of an air source heat pump; this is increased to £9,000 from July 2026
• £7,500 off the cost and installation of a ground source heat pump; this is increased to £9,000 from July 2026