£7,500
For an eligible air-to-water, ground-source or water-source heat pump. Other eligible air-to-water and ground-source applications remain at this level when the temporary uplift does not apply.
Grant values
Standard support and a temporary uplift for the systems we install.
The amount depends on the property, the heating system being replaced and the type of heat pump proposed. A grant is not automatic.
£9,000
From 21 July 2026 to 31 March 2027, for an eligible off-gas property replacing oil or LPG with an air-to-water or ground-source heat pump.
The scheme also lists other technology categories and values not shown here; this page focuses on the systems Thermal Earth installs. Always check the current rules before making a decision. Read Ofgem's guidance for property owners.
The first checks
Is my property likely to be in scope?
Eligibility is decided under the scheme rules and must be checked for the individual property. These are useful starting points, not an eligibility decision.
In England or Wales
The Boiler Upgrade Scheme operates in England and Wales.
Replacing existing heating
For a retrofit, eligible fossil-fuel or electric heating can be replaced. A gas, oil or LPG boiler is not required, but the scheme does not fund replacement of an existing low-carbon heating system.
Eligible property types
Residential and non-residential properties can qualify. Social housing and most new builds are excluded; qualifying self-builds are an exception.
Property evidence
If your property has a valid EPC, we include its reference in the application. If it does not, we can provide alternative evidence accepted by Ofgem, such as recent utility bills or fuel receipts and photographs of the existing heating system. You do not automatically need a new EPC to qualify.
How the scheme works
Your installer handles the application.
The Boiler Upgrade Scheme is installer-led. Thermal Earth can check the project against the current rules and guide an eligible application alongside the system design.
Tell us about the property
Start with an estimate and the heating system you want to replace.
Survey and design
The property and proposed system are assessed before eligibility can be confirmed.
Installer applies
An MCS-certified installer applies for the voucher on the property owner's behalf.
Install and redeem
After an eligible system is installed and commissioned, the installer redeems the voucher under the scheme process.
Worth knowing
The grant is part of the decision, not the whole design.
A suitable heat pump still needs to be designed around the building's heat loss, emitters, flow temperature and hot-water requirements. The grant does not make every property or proposed system eligible.
Older advice about automatically needing to complete EPC loft- or cavity-wall recommendations is no longer a universal scheme requirement. Current evidence requirements should be checked for the property.
Eligible residential heat-pump installations are zero-rated for VAT until 31 March 2027. Welsh homeowners can also explore Green Homes Wales advice and interest-free finance, subject to its eligibility and application process.
Check the official scheme guidance
Ofgem administers the scheme. GOV.UK publishes the approved grant categories and values.
Boiler Upgrade Scheme overview Guidance for property owners Approved grant values from 21 July 2026
Start with your property
Find out what system and grant route may suit your home.
Get an initial estimate, then our team can assess the design and current scheme rules for your property.