Energy Checker

Air source heat pump grants UK 2026

Owner-occupiers and landlords in England and Wales may qualify for up to £7,500 towards an air source heat pump through the Boiler Upgrade Scheme. Find out what is available, who qualifies, and how to access support.

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BUS voucher for air source heat pumps

The Boiler Upgrade Scheme (BUS) provides a £7,500 grant voucher for eligible air-to-water heat pump installations in England and Wales. The voucher is claimed by your MCS-certified installer and deducted from the installation cost — you do not need to pay upfront and claim back.

Air-to-water vs air-to-air

The BUS covers air-to-water heat pumps (which heat both space and water). Air-to-air systems (which only provide warm air and no hot water) are not eligible for the BUS voucher. Most domestic installations are air-to-water.

Who can apply?

  • Owner-occupiers or landlords of properties in England or Wales
  • The property must have an existing heating system being replaced
  • New-build properties are not eligible
  • An MCS-certified installer must carry out the installation
  • The property typically needs a valid EPC rating

Is my home suitable for an air source heat pump?

Air source heat pumps work well in a range of property types, but are most efficient in well-insulated homes. An installer will carry out a heat loss calculation before confirming suitability. Key considerations:

  • Adequate outdoor space for the unit (typically against an external wall)
  • Reasonable insulation in loft and walls
  • Radiators that may need upgrading for lower flow temperatures, or underfloor heating
  • A hot water cylinder if you do not already have one

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Other routes if income or benefits criteria apply

If your household receives certain benefits or is on a lower income, ECO4 or Warm Homes: Local Grant may cover heat pump installations at reduced or no cost. These routes are separate from BUS and have different criteria.

Sources

  • GOV.UK: Boiler Upgrade Scheme (gov.uk/guidance/boiler-upgrade-scheme)
  • Ofgem: Consumer information on BUS
  • MCS: Air source heat pump consumer guide (mcscertified.com)
  • Energy Saving Trust: Air source heat pumps

Last reviewed: July 2026. This page is guidance only and does not guarantee eligibility.