Boiler Upgrade Scheme grant amounts by technology
The table below shows the current grant values, which technology they apply to, and any key eligibility conditions for each.
| Technology | Grant amount | Key conditions |
|---|---|---|
| Air source heat pump (ASHP) | £7,500 | MCS-certified, replaces fossil-fuel or direct electric heating |
| Ground source heat pump (GSHP) | £7,500 | MCS-certified, includes water source heat pumps |
| Biomass boiler | £5,000 | Only in areas not connected to, or without potential to connect to, the gas grid |
| Geothermal heat pump | £7,500 | As per ground source; specialist applications |
Grant values are correct as of July 2026. One grant per property. The scheme runs until 31 March 2028.
Who is eligible for the Boiler Upgrade Scheme?
You must meet all of the following criteria to receive a grant:
- You own the property in England or Wales (homeowners and eligible landlords can apply).
- The property has a valid Energy Performance Certificate (EPC) issued within the last 10 years.
- The EPC must not contain an outstanding recommendation for loft insulation or cavity wall insulation — unless those measures are not technically suitable for the property.
- The heating system being replaced uses fossil fuels (gas, oil, LPG) or direct electric heating.
- You use an MCS-certified installer — the installer must be certified to install the specific technology.
- The property must be a domestic premises (houses, flats, bungalows, and some park homes).
- New-build properties are not eligible.
- You can only receive one grant per property.
How to apply for the Boiler Upgrade Scheme
The process is managed through your installer — homeowners do not apply directly to Ofgem.
Check your EPC
Look up your property on the EPC register at gov.uk. If your EPC shows outstanding recommendations for loft or cavity wall insulation, you will need to address these (or get a surveyor to confirm they are unsuitable) before applying.
Find an MCS-certified installer
Use the MCS installer finder at mcscertified.com to find accredited heat pump installers in your area. Get at least three quotes.
Installer applies for a voucher
Once you choose an installer and agree a contract, the installer applies to Ofgem for a grant voucher on your behalf. This must happen before installation begins.
Ofgem issues the voucher
Ofgem typically issues a voucher within a few days. The voucher is valid for three months, within which the installation must be completed.
Installation and redemption
After installation, your installer redeems the voucher with Ofgem. The grant is paid directly to the installer, who deducts it from your invoice. You pay only the net amount.
What the grant does and does not cover
The Boiler Upgrade Scheme grant applies to the cost of the heat pump or biomass boiler unit and its installation. It does not cover associated works such as radiator upgrades, underfloor heating installation, new hot water cylinders (though these are often bundled into the installer quote), electrical upgrades, or insulation improvements.
If your property needs significant additional work — such as larger radiators or improved insulation — these costs sit outside the grant. Budget separately for them. A good installer will include all associated works in their quote so you know the full project cost before committing.
Landlords can apply for the grant, but the property must be domestically let and meet the EPC condition. Social housing and new builds are excluded.
Scotland has its own scheme — the Home Energy Scotland grant — which provides separate funding toward heat pumps and insulation measures. Contact Energy Saving Trust Scotland for details.
Do not install before the voucher is issued
A common mistake is beginning installation before the grant voucher has been formally issued by Ofgem. If work starts first, the application will be rejected and you will lose the grant entirely. Always confirm the voucher reference number with your installer before any work begins on site.
EPC insulation recommendations: what disqualifies you?
The EPC condition is the most common reason applications fail. Use this table to understand what triggers a disqualification and what does not.
| EPC recommendation | Disqualifies you? | What to do |
|---|---|---|
| Loft insulation recommended | Yes, if technically feasible | Install loft insulation first, then get a new EPC |
| Cavity wall insulation recommended | Yes, if technically feasible | Install cavity wall insulation, then get a new EPC |
| Solid wall insulation recommended | No | Not a disqualifying recommendation |
| Solar panels or other measures | No | These do not affect eligibility |
| Loft/cavity recommended but surveyor confirms not suitable | No | Get written confirmation from a qualified surveyor |
Always check the current Ofgem guidance as eligibility rules can be updated.
Factor the grant into your home-buying budget
If you are buying a property with an old gas boiler, our home-buying planner lets you model the net cost of switching to a heat pump after the grant, helping you set a realistic refurbishment reserve before you make an offer.