About Helsi™
Wellness you can trust.
Helsi™ develops heat, cold and recovery technologies for your home — built on decades of experience and three simple principles:
- 1We design every product ourselves.
- 2We test it under real conditions before anyone else sees it.
- 3We use it ourselves, every day where possible.




30
years of combined experience in health and wellness
Founded by two German wellness experts and engineers
Helsi™ was founded by Johannes Jeß and Sebastian Mierau — two German wellness experts and engineers with a combined 30 years of experience in the health and wellness industry. With Clearlight, they built premium saunas for homes and commercial studios around the world — a success that continues to this day.
That experience — together with countless conversations with customers about what really matters in wellness — led to the ambition to go further: not just saunas, but heat, cold and recovery united in a range developed entirely on our own terms, without compromise. To make that possible, we built our own international team of engineers and wellness experts, bringing together knowledge and experience from around the world.
The Helsi™ Promise
Every product that carries the Helsi™ name is our own development — from the first sketch, through hundreds of real-world tests, to final production readiness. We draw up the plans, we build the prototypes, we refine them until they meet our own high standards and specifications. Only then do they carry the Helsi™ name.
Because we know exactly what goes into every Helsi™ product, we can offer you more than the usual fine print:
Above-average warranty.
We stand behind what we design ourselves — with a warranty that goes beyond the industry standard.
Local customer support.
If you have questions, you'll reach a team that helped develop your product themselves — no anonymous ticket systems, just people who genuinely know it.
Measured and tested protocols and technologies.
Because we develop the technology ourselves, we know exactly how it performs: every product is developed and tested against clearly measured protocols — so what's on the label is what's inside.
Responsibility that lasts
Sustainable design isn't an add-on for us — it's part of the same standard: products built to last are better for you, and for the environment.

Discover our products.
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