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The Boiler Upgrade Scheme (BUS) currently provides £7,500 towards most hydronic heat pumps in England and Wales, rising to £9,000 for eligible off-gas-grid properties until 31 March 2027.
BUS provides £7,500 for air-to-water, ground source and water source heat pumps, £2,500 for eligible residential air-to-air systems, and £5,000 for eligible biomass boilers. The temporary off-gas-grid uplift is £9,000 for air-to-water or ground source heat pumps.
Heat pumps work well in well-insulated homes with appropriately sized radiators or underfloor heating. An MCS-certified installer carries out a heat-loss assessment.
Home Energy Scotland offers a grant and interest-free loan for heat pumps. Northern Ireland has its own Affordable Warmth and energy efficiency support.
Most eligible air-to-water, ground source and water source systems receive £7,500. Eligible off-gas-grid properties can receive £9,000 until 31 March 2027.
BUS is aimed at owner-occupiers and private landlords. Social housing typically uses different funding routes.
The grant supports replacing an existing fossil-fuel or electric heating system. It cannot be used to replace an existing low-carbon system.