Boiler Upgrade Scheme (BUS)

Fixed grants for replacing fossil fuel heating systems with heat pumps or biomass boilers. The scheme supports the transition to low-carbon heating in domestic and small non-domestic buildings.

Funding Amount

Air Source Heat Pump: £7,500 | Ground Source Heat Pump: £7,500 | Biomass Boiler: £5,000

Deadline

Rolling (budget dependent, confirmed for 2025/2026)

Eligibility Checklist

Property in England, Wales, or Scotland

Domestic or small non-domestic building

Valid Energy Performance Certificate (EPC)

Replacing an existing fossil fuel heating system

Interested in heat pump technology

Required Documents

1
Valid Energy Performance Certificate (EPC)
2
Quote from MCS-certified installer
3
Evidence of existing fossil fuel heating system
4
Property ownership or landlord consent documentation

Step-by-Step Application Process

Ensure your property has a valid EPC

Get a quote from an MCS-certified heat pump installer

Installer submits BUS application to Ofgem

Ofgem reviews and issues an eligibility letter

Heat pump installation is completed

Installer claims the grant from Ofgem

You pay the net cost (installation minus grant)

Key Conditions & Gotchas

!MCS-certified installer is mandatory
!Grant is a fixed amount, not a percentage
!Large commercial premises are excluded
!Heat pump must meet specific efficiency standards
!May require building consent or planning permission

Grant Stacking

Cannot be stacked with other government heating grants for the same property. Can be combined with Full Expensing capital allowance.

Ready to Apply?

Visit the official application portal or book a free consultation with our team.

Official Portal