Under the scheme, Halifax mortgage customers can get a heat pump installed from as little as £2,000. 

Octopus Energy will provide and install the heat pumps, while Halifax will award a £1,000 Green Living Reward. The scheme, used in conjunction with a £5,000 government Boiler Upgrade Scheme (BUS) grant, could mean heat pumps for some homes will cost less than certain gas boilers, the organisations claim.

The offer is designed to benefit the around 40% of UK homes (10 million) which are already suitable for heat pumps, or around 65% (14 million) with minor efficiency measures (such as loft insulation) carried out. 

The pilot is the latest in Octopus Energy’s roster of initiatives designed to wean the UK off fossil fuel and become more energy independent. Earlier this year, the energy supplier, which is the third biggest in the UK, acquired heat pump manufacturer Renewable Energy Devices (RED) in a move to build cheaper and better heat pumps for the UK.

Rebecca Dibb-Simkin, Chief Product Officer at Octopus Energy, said: “We’re always looking for ways to help people save money while accelerating the shift to a clean energy future.

"The pilot with Lloyds Banking Group comes at a crucial time for consumers facing a dual climate and cost of living crisis. It no longer needs to be a question of prioritising one over the other: heat pumps are greener than gas boilers, and thanks to Octopus, the government, and Lloyds Banking Group they can be cheaper too.”

Jas Singh, CEO Consumer Lending, Lloyds Banking Group, said: “Our partnership with Octopus adds another element supporting our strategy to help Britain live in better, warmer, greener homes and move the country towards its net-zero target. 

“Lots of homeowners who need to replace, or want to upgrade, a gas boiler may have considered the switch to a heat pump but see the cost as a barrier. This extension to our Green Living Reward scheme will make switching from a gas boiler to a new, more efficient, cheaper to run heat pump easier and more affordable than ever before.

“We won’t stop here.  We are committed to playing our part in reaching net-zero by continuing to support and encourage our customers to make greener choices for their homes. This pilot is just the first from our partnership with Octopus Energy; we will continue to innovate, we will continue to help make Britain’s homes better for their owners and better for the environment.”

The pilot is the first step in the partnership between Octopus Energy and Lloyds Banking Group, with more projects in the pipeline to accelerate the green energy transition at home.