Thermasol Solaris Solar-Powered Outdoor Sauna | Sustainable Wellness

Power Your Wellness With the Sun

The Solaris reimagines outdoor sauna by harnessing solar energy. This isn't just environmental responsibility—it's a complete reimagining of sustainable luxury, where your wellness ritual runs on nature's boundless power.

Recognized by TIME as one of the Best Inventions of 2025, the Solaris Sauna Cabin is a fully off-grid, solar-powered sauna that works wherever the sun shines.

A fusion of sustainability and wellness, the Solaris delivers a complete sauna experience with the flexibility of no required power connection. The contemporary design uses Tile Oak cladding on both the exterior and interior for a modern European look that is UV-resistant. Solar panels adorn the roof and one external wall with one day of sunshine needed for a full charge, and the ability to monitor power levels through a mobile app.

Enter through the full-length glass door and step into the well-insulated sauna cabin highlighted by an expansive glass window with alder framing. Both pieces of glass are solar tinted to bring in natural light while maintaining privacy during daytime sauna sessions. RGB color therapy LEDs glow from recessed locations throughout the cabin, with the included control able to fully customize users' desired ambiance. Lie back upon brushed alder sauna benches and backrests while the Harvia KIP delivers gentle heat and restorative steam through solar power.

Supported by ThermaSol's 1-year warranty, the Solaris outdoor sauna is the first of its kind, offering complete freedom for eco-conscious bathers to experience wellness from anywhere they desire.

Wellness and Sustainability, Unified

The Solaris proves that luxury wellness and environmental responsibility aren't opposing forces. They converge here—where the sun powers your recovery.

Shipping Notes

Outdoor saunas are delivered via flatbed trailer and fully assembled. 

Customers are notified two weeks prior to the scheduled delivery to allow time for preparation. A forklift or crane is required for placement, and a licensed electrician must install the heater. Due to its size and weight, manual offloading is not recommended. Please ensure the proper equipment is available at the time of delivery.

Please ensure you are fully prepared to receive and unload your sauna in accordance with the instructions provided in your manual.

The path from delivery point to placement site must be clear and accessible for equipment. Saunas should be installed on a firm, level surface with slight runoff for drainage—such as concrete, decking, pavers, or compacted gravel.

For complete guidelines, please refer to the product manuals.

Features

• Solar heating system reducing operational costs
• Eco-conscious approach to backyard wellness
• Pre-assembled panels for straightforward installation
• Contemporary design celebrating sustainable choice
• Premium aspen interior with modern exterior
• Solar collectors optimized for consistent heat
• Battery backup system ensuring reliable use
• Integrated heater controls managing solar and reserve power
• The small size accommodates 2-3 people and the medium size accommodates 4-5 people
• Ready for deck, concrete, or prepared ground with solar exposure
• Pre-assembled, professional installation recommended

Specifications

Click here to see specifications sheet.

What's Included?

• Complete sauna assembly
• Solar heating system with battery backup
• Solar collector panels and mounting
• Integrated temperature control system
• Installation hardware and instructions
• Site assessment and installation guidance
• Technical support and maintenance resources
• Limited lifetime structural; heater/solar 5 years