Boiler Upgrade Scheme (BUS) Application Process
The Application Process
The Boiler Upgrade Scheme will be installer led, meaning that you do not have to apply for the voucher yourself. More information about the application process has been published on Page 27 of Ofgem’s property owner guidance.
Step-by-step process for applying below.
Who will be eligible for the Boiler Upgrade Scheme?
Installers - Must be MCS Certified
Location - Properties must be located in England or Wales
Type of building
• Domestic and small non-domestic buildings are eligible
• Social housing and new builds are not eligible
• ‘Self-builds’ are the only eligible new builds
Energy Performance Certificates
All properties must have an EPC with either:
• No recommendations to install loft or cavity wall insulation
• Or provide evidence of being exempt from insulation requirements
On or after 1st April 2022.
Previous heating system requirements
• The previous system must have been a fossil fuel powered heating system or electric system, excluding heat pumps
• All heat generating components must be replaced
• Air Source Heat Pumps
• Ground Source Heat Pumps
• Water Source Heat Pumps
• Ground Source Heat Pumps as part of a shared ground loop
• Biomass boilers
45 kWth total capacity limit, including for shared ground loop systems. This covers the vast majority of domestic and small non-domestic properties.
Heat pump or biomass boiler system requirements
• Your installer will be able to advice you of which technology is most suitable for your home and help you to understand the eligibility criteria, including the technical eligibility criteria for the system.
• Your NIBE Pro installer will advise whether a low carbon heating system is suitable for your property. Find your nearest NIBE Pro Installer here.
• You can check your eligibility for the scheme here.
Zero VAT on heat pumps
The recently announced 0% VAT on the installation of energy saving materials including heat pumps and biomass boilers, further reduces the cost of installing these systems. This reduction takes effect from 1st April 2022, and will last for 5 years, meaning it will cover the entire period of the BUS. More information about how this is applied can be found here.