Jonas Grand Sauna | Celsium Wellness

Designed and manufactured in Europe

Celsium saunas bring contemporary architecture, refined craftsmanship, and a deep respect for traditional sauna culture to private homes and professional wellness spaces. Each sauna is crafted in-house, giving Celsium close control over its materials, construction, and finishing details. Clean silhouettes, thoughtfully composed interiors, and enduring natural materials create a sauna experience that feels both modern and timeless. Select Jonas and Ula outdoor saunas are now available from Celsium’s U.S. inventory in Illinois, offering American buyers the distinction of European design without the customary overseas production and import wait. For the full Celsium sauna line including custom builds, contact Luxury Sauna Collection for exclusive product offerings.

Jonas Collection

Architectural in presence and thoughtfully composed, the Celsium Jonas collection offers a distinctly European interpretation of the outdoor sauna. Its Thermowood exterior creates a rich, contemporary profile, while the lighter aspen interior brings warmth and visual balance to the sauna room. Bronze-tinted glass and integrated interior lighting complete the design with a restrained, atmospheric finish. Fully insulated for year-round outdoor use, Jonas is designed for buyers seeking a substantial sauna that feels intentionally integrated into the surrounding architecture and landscape. Available in three sizes, the collection offers options ranging from a more compact private retreat to a generous setting for family and guests.

Crafted to fit up to 6 people

View Product Sheet

Thermowood Exterior

The Jonas exterior is crafted from Thermowood-thermally modified pine selected for its performance in changing outdoor conditions. Resistant to water and humidity, the wood is less susceptible to swelling, shrinking, warping, or twisting than untreated wood and will not release resin.

Inside, aspen and alder benches create a warm, natural setting designed for comfort during the sauna experience.

• Aspen Interior
• Bronze Tinted Glass
• Left Side Doors

*Thermowood exterior is untreated upon arrival. After assembly, any suitable exterior wood oil or paint can be used to finish the sauna exterior in your color of choice. Clear exterior oil can also be used to preserve the natural Thermowood appearance

• Thermowood Exterior
• Aspen interior
• 85.0 × 109.6 in, H 98.0 in
• Indoor LED
• Bronze tinted glass
• Heater is not included
• Left hand side doors
• Flatpack
  
  

Complimentary shipping to the 48 contiguous United States. Ships in 3-5 business days from order. Flat pack delivery to driveway or curbside. Assembly instructions provided. Delivery coordination with installation support can be arranged at an added cost.Site preparation should be completed prior to arranging delivery. Please contact Luxury Sauna Collection with any questions around sauna choices, shipping, delivery, installation, and assembly.

Questions about delivery? We encourage you to contact us before ordering if you have questions about freight access, unloading requirements, or preparing for delivery. We're happy to help. 508.296.0118 | hello@luxurysaunacollection.com

View Luxury Sauna Collection's complete Shipping & Delivery Policy

CELSIUM outdoor saunas are warranted against defects in materials and artistry under normal/residential use for a period of five (5) years, as applicable, from the date of receipt of the product. The warranty does not apply to normal wear and tear and natural weather conditions. The warranty does not cover regular required maintenance of the sauna (e.g. cleaning or staining). Refer to your sauna assembly manual for maintenance guidelines. This warranty does not cover misuse or negligence. The warranty is parts-only; any service or labor costs would not be considered part of the 5-year warranty. Sauna heaters are under their own original warranty.

Flat-Pack Delivery & Assembly

Your Celsium sauna will arrive securely packaged in flat-pack form on a large pallet. Standard delivery is curbside or to the end of your driveway. Liftgate service may be included depending on your location and the available delivery service. Detailed assembly instructions are provided with the sauna to guide the installation process. If you would prefer professional assistance, installation and assembly options may be available and should be discussed before placing your order. Estimated installation costs typically range from $500 to $7,000, depending on the delivery address, sauna model, site conditions, and overall project complexity. A project-specific estimate will be provided when available.For delivery or installation assistance, please contact us at hello@luxurysaunacollection.com or call 508.296.0118