Air Source Heat Pump Grantindependent guide · not a government service
Check the rules for your home

Reference

Heat pump grant glossary

The words that appear in grant emails, quotes and official pages, each in a sentence or two and linked to the page where it matters.

Rules checked 3 November 2026 against GOV.UK and Ofgem · Independent guide, not a government service

Air-to-air heat pump
A heat pump that warms the air in rooms and does not heat water. Covered at £2,500 in homes since 28 April 2026. More
Air-to-water heat pump
The usual air source heat pump: it heats water for radiators or underfloor heating and for taps. More
Boiler Upgrade Scheme (BUS)
The grant for heat pumps and some biomass boilers in England and Wales, run by Ofgem. More
Capped meter
A gas meter that has been capped or clamped. For the grant it still counts as a mains gas connection. More
Commissioning
Setting the system up and checking it works once it is installed; the voucher must be claimed after it. More
Consent
The property owner's confirmation to Ofgem that the installer is acting for them, due within 14 days of Ofgem's email. More
Consumer code
A code of practice installers must belong to; Ofgem lists HIES, RECC and MCS for the scheme. More
DESNZ
The Department for Energy Security and Net Zero, which sets the grant values and publishes statistics. More
EPC
Energy performance certificate. No longer needed for the grant since 28 April 2026. More
Hybrid system
A heat pump working alongside a boiler that stays in use. Not covered. More
kWth
Kilowatts of heat output. A single system can be up to 45 kWth for the grant. More
MCS
The Microgeneration Certification Scheme. The only installer certification the grant accepts. More
Off-gas property
For the grant: not fuelled by mains gas, no record of a gas meter point, not on a heat network and not a new build. More
Ofgem
The energy regulator, which runs the scheme day to day: it receives applications, contacts owners and issues vouchers. More
Redemption
The installer claiming the voucher once the system is commissioned. More
Retrospective application
An application made after the heat pump is fitted, within 120 days of commissioning, at the owner's risk. More
Statutory review
A request for Ofgem to look again at a decision. Only the installer can make it, within 28 days. More
Uplift
The higher £9,000 rate for homes with no mains gas replacing oil or LPG, for applications made by 31 March 2027. More
Voucher
The approved grant, issued in the installer's name, valid for 3 months (air source) or 6 months (ground source). More

Sources

  1. GOV.UK, Boiler Upgrade Scheme: what you can get
  2. Ofgem, property owner guidance v5.1 (PDF)

Checked 3 November 2026. The scheme's rules change; where GOV.UK or Ofgem says something different, they are right. Tell us through the form and we will correct this page.

Not sure how the grant applies to you?

Tell us what heats the home now, who owns it and what you are planning. SEO-DONS LTD, which publishes this guide, reads it and answers by email with the scheme rule that fits.

What happens next

  1. Your question goes to SEO-DONS LTD, the publisher of this guide.
  2. We answer by email and point you to the GOV.UK or Ofgem rule behind the answer.
  3. Nothing you send applies for the grant or commits you: only an MCS certified installer can apply.
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Read by SEO-DONS LTD, publisher of Air Source Heat Pump Grant, and answered by email. This site is not the government, Ofgem or an installer and cannot apply for or approve a grant. See our privacy notice.

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