Hydrogen Combustion Technology Powers World’s First Zero-Emission Sauna in Finland

Harvia Plc and Toyota Motor Corporation have teamed up to create something seriously groundbreaking — what’s believed to be the world’s first hydrogen-powered sauna. Unveiled on June 3, 2025, this collaboration blends Harvia’s deep-rooted sauna know-how with Toyota’s cutting-edge hydrogen combustion technology. The result? A cozy, fully functional sauna that runs on hydrogen, not firewood or electricity — and better yet, it only gives off water vapor. No smoke, no CO₂. Just steam and sustainability.

A New Chapter for Saunas — and Hydrogen

The new sauna concept is getting its big debut in Jyväskylä, Finland, during two major events: the World Sauna Forum (June 4–5, 2025) and the world-famous Rally Finland (July 31–August 2, 2025). Visitors will get to see — and feel — firsthand how zero-emission technology is making its way into everyday life. It’s an immersive look at how hydrogen could be more than just a fuel for vehicles or factories.

More Than a Gimmick: This Is Innovation with Purpose

For Toyota, this isn’t just a cool PR stunt. It’s a chance to stretch its hydrogen combustion technology beyond the car industry and explore how hydrogen could fit into daily living. Meanwhile, Harvia gets to lead the pack in the wellness space by showing that ancient traditions — like sauna culture — can evolve using the latest in sustainable energy.

Hydrogen Moves In Closer to Home

Sure, there are still hurdles to clear — especially when it comes to hydrogen infrastructure and the unique safety challenges of using hydrogen in smaller, more personal spaces. But this project is a bold sign of the times. It hints at a not-so-distant future where industrial decarbonization moves from factories and highways to backyards and spas.

Bottom line? Hydrogen isn’t staying in the lab or under the hood. It’s heating up rocks and reimagining what clean, relaxing living can look like. And this sauna is just the beginning.