SeaWarm Launches With £550K in Funding for Sustainable Heating Solutions

The funding will help the University of Edinburgh spinout fuel growth and build partnerships.

Written by Rose Velazquez
Published on Oct. 01, 2025
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REVIEWED BY
Sara B.T. Thiel | Oct 01, 2025

SeaWarm, a new Edinburgh startup developing sustainable heating and cooling solutions, has launched with £550,000 in funding. That investment consists of £250,000 from angel investment syndicate Equity Gap, £250,000 from Scottish Enterprise and £50,000 from the University of Edinburgh’s venture fund Old College Capital.

With support from Edinburgh Innovations, the University of Edinburgh’s commercialization service, SeaWarm was co-founded by Professor Christopher McDermott, former university hydrogeologist Gus Fraser-Harris and Cameron Muir of CSM Plumbing and Heating. The startup’s heat exchanger technology is designed to operate like a conventional heat pump, but harnesses natural energy from water, rather than air. 

In addition to being modular and compact, SeaWarm’s pods provide efficient, reliable performance even in cold weather conditions, while also saving money and cutting carbon emissions for homes and businesses.

“Our mission is to bring affordable, renewable heating to communities most exposed to rising costs and carbon-intensive systems. Scotland’s coastal communities are our immediate focus, where we aim to establish a strong track record before expanding across the U.K., Europe and internationally,” McDermott said in a statement.

SeaWarm will put its funding toward accelerating growth and building partnerships. While its initial focus will be on meeting heating demand, it plans to expand into applying its technology for cooling in the future.

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