Airthium is a deeptech company developing high-temperature industrial heat pumps that provide decarbonized heat and power cheaper than fossil fuels. Their proprietary technology can generate heat up to 550°C, enabling the replacement of fossil fuel-based boilers in industries such as food, paper, chemicals, and mining. This innovation targets a market worth $13 billion annually and could reduce global CO2 emissions by up to 3% cost-effectively, addressing about 33% of worldwide emissions linked to industrial heat and power[1][2][7]. Airthium’s heat pumps also offer long-duration renewable energy storage, enhancing the viability of wind and solar power by storing heat in materials like molten salt or sand for months[3][4].
For an investment firm, Airthium’s mission is to revolutionize industrial heat with smarter, cleaner technology that supports sustainable industrialization and climate change mitigation. Their investment philosophy focuses on deeptech innovations that combine environmental impact with cost competitiveness. Key sectors include industrial heat, renewable energy storage, and decarbonization technologies. Airthium’s breakthrough technology influences the startup ecosystem by demonstrating how hardware deeptech can disrupt entrenched fossil fuel markets and accelerate the transition to net-zero emissions[1][4].
As a portfolio company, Airthium builds very-high-temperature heat pumps and heat engines that serve industrial customers needing steam and hot air at temperatures above 200°C, which currently rely on fossil fuels. Their product solves the problem of decarbonizing industrial heat cost-effectively while reducing energy costs. Growth momentum is driven by early traction in retrofitting industrial facilities with scalable heat pump units (200 kW to 1 MW thermal), partnerships with industrial players, and recognition from accelerators like Y Combinator[2][3][5].
---
Origin Story
Airthium was founded in 2016 by Andrei Klochko, a PhD in Plasma Physics from École Polytechnique (Paris), who serves as CEO and CTO. Co-founder Franck Lahaye brings extensive sales and satellite industry experience. The idea emerged from the challenge of decarbonizing industrial heat, a sector largely dependent on fossil fuels with no efficient alternatives above 180°C. Early recognition came through multiple innovation prizes and participation in Y Combinator in 2017, which helped Airthium refine its technology and business model[4][7].
---
Core Differentiators
- Product Differentiators: Airthium’s heat pumps reach unprecedented temperatures up to 550°C, far exceeding the 180°C limit of conventional heat pumps, enabling decarbonization of high-temperature industrial processes[1][5].
- Efficiency and Cost: Their heat engines convert electricity to heat and vice versa with record efficiency (up to 86% of the theoretical limit), outperforming existing technologies (~64%), while being cheaper to operate than fossil fuels[6][7].
- Versatility: The technology supports both industrial heat supply and long-term renewable energy storage, addressing seasonal energy storage challenges for renewables[3][4].
- Developer Experience: Airthium offers scalable retrofits that integrate with existing gas-fired boilers as backups, easing adoption and reducing risk for industrial customers[2].
- Community Ecosystem: Supported by leading VCs, industrial partners, and government funding (France 2030, ADEME), Airthium benefits from a strong innovation network and credibility[9].
---
Role in the Broader Tech Landscape
Airthium rides the global trend of industrial decarbonization and renewable energy integration. Industrial heat accounts for a significant share of global energy consumption and CO2 emissions, yet remains one of the hardest sectors to decarbonize due to high temperature requirements. Airthium’s timing is critical as governments and industries face increasing pressure to meet climate targets and transition to zero-carbon energy sources. Market forces such as rising fossil fuel prices, regulatory incentives, and growing renewable capacity favor Airthium’s solutions. By enabling cost-effective electrification of industrial heat and seasonal energy storage, Airthium influences the broader ecosystem by accelerating the shift from fossil fuels to clean, reliable, and affordable energy[1][2][7].
---
Quick Take & Future Outlook
Airthium is poised to expand its industrial heat pump deployments and scale its long-duration energy storage solutions, potentially transforming multiple heavy industries. Future trends shaping their journey include stricter carbon regulations, advances in renewable electricity generation, and increasing demand for sustainable industrial processes. As Airthium’s technology matures and adoption grows, its influence could extend beyond industrial heat to broader energy markets, helping to decarbonize power generation and stabilize renewable grids. This aligns with their vision of a world powered 100% by renewables, where clean electricity is cheaper than all fossil fuels, fundamentally changing the economics of energy and climate action[4][7].
In summary, Airthium’s breakthrough heat pump technology offers a scalable, cost-effective path to decarbonize industrial heat and power, addressing a critical climate challenge with strong growth potential and ecosystem impact.
