UNA Design Sauna – A Modern Design Sauna for Commercial and Private Use

UNA Design Sauna is developed for projects where sauna is part of the overall concept and customer experience – not just a separate function. It combines architecture, functionality and operational efficiency into one clear solution, and represents the culmination of Finnish sauna design.

Stylish and Spacious – for Destinations where the Sauna Plays a Central Role

UNA Design Sauna is a spacious and inviting outdoor sauna for 10–15 bathers. It is ideally suited for private use as well as for new sauna businesses, the development of existing sauna concepts, and tourism and real estate projects where the sauna plays a central role. UNA is a natural choice for destinations that want to stand out, strengthen the customer experience, and make the sauna a key attraction – whether it is a new opening, an expansion of operations, or the renewal of an existing sauna destination for commercial use.

UNA Design Sauna is available in three models: the Float version (floating design sauna), the Flat model for level ground, and the Slope version designed specifically for hillside settings. The same high-quality architecture and atmosphere, as well as carefully designed solutions, are repeated in all options. Each sauna is always made to order and delivered as a completely ready-to-use sauna.

Planning a Similar Sauna Project?

Whether you’re just exploring an idea or already have a completed plan, we’d love to hear about it.

More than a Sauna – a Multifunctional Terrace & Kota Lounge

UNA Design Sauna is an entity where the sauna experience naturally extends into an immersive outdoor space. The sauna’s distinctive triangular form creates a sheltered, partially covered lounge area that serves as a natural extension for cooling down and relaxation during sauna bathing.

Under the shelter fits well, for example, a 2×2 meter jacuzzi, while still leaving room for furniture and cooling off. A fireplace can also be implemented into the terrace area, adding atmosphere throughout the year.

The covered space beneath the triangle can optionally be glazed, creating a sheltered and atmospheric small “kota lounge” style area, suitable for recovery and relaxation year-round.

The multifunctional terrace and covered lounge area make UNA Design Sauna a complete entity where sauna bathing, cooling down, and togetherness are naturally combined into one immersive sauna concept – without the need for separate buildings.

Architecture that Performs – a Superior Choice for Commercial Use

In UNA Design Sauna, architecture is not just a striking form, but a genuine economic advantage. The triangular shape and slanted rear wall reduce unnecessary heated air volume and concentrate heat on the benches, exactly where the bathers are. This is especially significant in commercial use, where the sauna may be in operation for up to 10 hours a day and the door is constantly opening. The structure enables faster heating and up to approximately 20% less heated air volume compared to a traditional box-shaped sauna.

UNA Design Sauna is built from 160 mm thick Finnish CLT solid wood, which acts as a natural heat accumulator. The structure stores heat and releases it evenly back into the sauna, ensuring that the steam remains soft and consistent throughout the entire operating day – exactly the kind of experience sauna users value and expect.

When hundreds of liters of water are thrown onto the sauna stones daily, solid wood also acts as a natural moisture buffer. It temporarily absorbs excess moisture and releases it as the sauna dries. This keeps the structures healthy and allows the sauna to dry in a controlled manner, making UNA Design Sauna a durable and long-lasting solution for demanding commercial use, year after year.

Consistent Steam & Effortless Maintenance

Every UNA Design Sauna is equipped with a correctly sized wood or electric stove according to the size of the space, purpose of use, and actual usage level. This ensures efficient heating and consistent steam quality even under heavy use. The right heater ensures that energy efficiency, user comfort, and the sauna experience remain in balance day after day.

The sauna’s architecture and structural solutions are designed to make daily maintenance easier. There are no hard-to-clean areas under the benches, bath water is directed in a controlled manner to the right place, and the sauna dries quickly. This keeps cleaning and maintenance effortless and cost-effective – and everyday operations at the sauna destination running smoothly.

When The Water Becomes Part Of The Sauna Experience

A Floating UNA Design Sauna offers a sauna experience that simply cannot be recreated on land. By placing the sauna directly on the water, nature becomes an integral part of every moment – from the gentle movement of the waves to uninterrupted panoramic views.

Unlike traditional saunas, a floating sauna creates a seamless connection between heat, fresh air and cold-water immersion. Guests can step directly from the warmth of the sauna into the water for swimming or cold-water recovery, making every sauna session more immersive, refreshing and memorable.

Designed for lakes, rivers, coastal destinations and urban waterfronts, Floating UNA Design Sauna is an ideal solution for hotels, resorts, spas, marinas and premium hospitality destinations looking to offer a distinctive wellness experience. The surrounding landscape is no longer just a view – it becomes an active part of the journey.

The combination of modern Scandinavian design, close contact with nature and effortless access to open water creates an authentic wellness experience that attracts visitors throughout the year. Whether used for relaxation, social gatherings or recovery, Floating UNA transforms any waterfront into a destination of its own.

When the Sauna is Meant to be a Profitable Attraction

UNA Design Sauna is a long-lasting and economically wise investment for commercial use. Its innovative architecture and structure, combined with durable materials, significantly reduce energy consumption and make sauna operation genuinely cost-effective. Heating costs are up to 12.5% lower than in a comparable 100 mm solid wood sauna.

UNA Design Sauna is a complete entity where experience, functionality, and economic viability naturally go hand in hand. When the goal is to make the sauna a key attraction of the destination and offer customers a high-quality sauna experience steam after steam, UNA provides a solution that stands the test of time, use, and admiration.

If you are planning a commercial sauna, we are here to help turn your idea into a functional and profitable reality. We offer sauna consulting, supporting clients in developing successful, experience-driven and commercially viable sauna concepts from early-stage planning to implementation.

Planning a sauna project? Tell us about your idea – we’ll help you shape the right solution.