Our story
Design, quality, and Finnish craftsmanship – that is the essence of Mondex.
The story of this fully Finnish sauna heater brand began in Kokkola in 1992 when we introduced our first soft-steam soapstone heaters. Their unique structure revolutionized the Finnish electric heater market and laid the foundation for a brand that is still known for its timeless, Finnish design and respect for tradition.
Over 30 years of growth and innovation
For more than three decades, we have steadily strengthened our expertise and invested in developing the Finnish sauna culture. We have launched new, innovative models and honed the design, quality, and technical solutions of our existing heaters down to the last detail to meet the needs of a modern sauna enthusiast. Our catalogue has expanded from the original soapstone heaters to a versatile range that covers different types of electric and wood heaters as well as nature-inspired, safe stone radiators.
We have always wanted to be part of a movement that moves the Finnish sauna culture towards the future. In 2022, we launched our first WiFi-controlled heaters to help our users’ everyday lives and to make going to the sauna smoother and more comfortable. Today, the core of our design work is user experience and energy efficiency, without ever forgetting the heart of the sauna: good steam.
Company video
From Kokkola to Ylivieska
In the early years, we manufactured our heaters in Kokkola, Finland. Later, the production moved to Ylivieska, Finland to Premec Oy, who initially served as a contract manufacturer. In 2016, Premec bought Mondex’s business, and Mondex Oy as a company was merged under Premec. But the Mondex trademark and brand continued, now under Premec’s operations.
Relocating the production to Ylivieska provided access to modern and spacious facilities. All Mondex heaters were designed, manufactured, and assembled under the same roof. As a result, quality stays as high as before.
Towards a new era with Darekon
In early 2022, Oy Darekon Ltd bought Premec, whose operations continued unchanged under the new owner. Three years later, Premec’s contract manufacturing business was merged into Darekon. Only the heater business remained under Premec, and the company name returned to its roots: Premec Oy became Mondex Oy once again.
In 2024, as assembly space needs grew, Mondex’s assembly operations moved - together with other Darekon assembly units - to another facility in Ylivieska. These premises not only ensure high quality but also support larger production volumes and enable future growth. Today, Mondex Oy operates as a subsidiary of Darekon, still with a strong identity of its own as a dedicated voice for Finnish sauna and Finnish quality. Today, Mondex Oy is a subsidiary of Darekon, but still strongly committed to its own identity as an advocate of Finnish sauna and quality.
Steam to the world
We at Mondex believe that the Finnish sauna tradition and modern technology fit very well together in the same steam room. We design our products to be practical and beautiful, choose our materials with care, and fine-tune every detail to ensure going to sauna is just as effortless as it should be for everyone.
As Mondex grows globally, we want to share the sauna experience as we know it: relaxed, authentically, and full of enjoyment. At the same time we listen and learn how others go to sauna. For us, there is no one right way to enjoy the steam, and that is why we love to share stories, tips, and facts about sauna as a place of recovery and cleansing to everyone who is curious.