Best UK Bank Cashback and Loan Offers for Heat Pumps in 2026
If you're thinking about installing a heat pump in 2025, there's never been a better time. On top of the £7,500 Boiler Upgrade Scheme grant, many UK banks are now offering their mortgage customers exclusive cashback deals to help cover the cost of switching to greener home heating.
These offers are part of a growing trend to encourage homeowners to improve the energy efficiency of their properties. The result? More affordable heat pump installations and lower long-term energy bills.
In this guide, we'll break down the best heat pump cashback and loan offers available from leading UK banks, explain who's eligible, and how to claim.
Just a heads-up: we've pulled together the key info, but it's always best to double-check the details yourself. Head over to each provider's site to read the full terms and remember, this isn't financial advice, just a helpful summary.
Bank Cashback and Loan Offers
Barclays: £2,000 Cashback for Heat Pump Installs
- Offer: Greener Home Reward
- Benefit: £2,000 cashback on a qualifying heat pump installation
- Eligibility: Available to existing Barclays mortgage customers who install an eligible energy improvement like a heat pump. You must apply through their Greener Home Reward scheme.
Lloyds Bank: Up to £1,000 Eco Home Reward
- Offer: Eco Home Reward
- Benefit: Up to £1,000 cashback for qualifying energy efficiency upgrades, including heat pumps
- Eligibility: Must be a Lloyds Bank mortgage customer and a Club Lloyds current account at point of claim. The cashback applies to verified energy-saving home improvements.
Halifax: Up to £2,000 Green Living Reward
- Offer: Green Living Reward
- Benefit: Up to £2,000 cashback
- Eligibility: For Halifax mortgage customers who install qualifying energy improvements, such as a heat pump. To qualify, you must apply for a new Halifax mortgage, additional borrowing, or switch to a new mortgage deal after 31 July 2024 and have a Halifax Current Account.
Nationwide: 0% Interest Green Additional Borrowing
- Offer: Green Additional Borrowing Mortgage. Now expanded to more customers in March 2026.
- Benefit: Borrow £5,000 to £20,000 at 0% interest for the first 2 or 5 years
- Eligibility: You must be an existing Nationwide mortgage holder. Improvements must be energy efficient (including heat pumps), and proof of installation is required.
Virgin Money: Retrofit Boost
- Offer: Retrofit Boost – cashback on your mortgage
- Benefit: A dedicated mortgage product with cashback of £5,000–£15,000, delivered through a partnership with Hive
- Eligibility: Amount offered is tied to the mortgage deal chosen, not the specific improvement.
Combine with Government Grants
Boiler Upgrade Scheme in England and Wales (BUS)
In addition to these bank offers, you can claim a £7,500 grant through the UK Government's Boiler Upgrade Scheme (BUS). This applies in England and Wales, and is applied directly to the cost of your heat pump installation through your installer.
Home Energy Scotland Grants and Loan
If you're in Scotland, you can apply for support through Home Energy Scotland. This scheme offers:
- Up to £7,500 in grant funding for installing a heat pump
- An optional interest-free loan of up to £7,500 on top
- An extra £1,500 uplift if you live in a rural or island area
Combined, Scottish homeowners could access up to £18,000 in support.
Why Heat Geek?
Heat Geek is the UK's leading platform for heat pump installs. We help homeowners across the country upgrade to smarter, greener heating with trusted, trained installers.
If you've been thinking about making your home more efficient, this is a great first step. In under 30 seconds, you can check what a heat pump would look like for your home – including expected costs, savings and what the setup could be.
To get an instant estimate, head to our website using the button below.