Series A · Climate Tech · Paris, France · Founded 2015 · 15–18 employees
Airthium develops breakthrough high-temperature heat pumps capable of reaching 550°C to decarbonize industrial processes that currently rely on fossil fuels. Their proprietary Stirling engine technology can achieve 86% Carnot efficiency compared to 64% for state-of-the-art solutions, enabling cleaner industrial heat that's cost-competitive with natural gas. The company went through Y Combinator in 2017 and recently raised €3M from prominent investors including Daphni, Polytechnique Ventures, and EREN Groupe. They have strategic partnerships with McCain Foods and target commercialization by 2027, addressing 20% of global CO2 emissions from industrial heat production.
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