ThermaSol Fortis 4-Person Outdoor Sauna Cabin

Your Backyard. Your Private Sauna Retreat.

Make room for a slower pace with the ThermaSol Fortis 4-Person Outdoor Sauna Cabin. Designed for outdoor living, this made-to-order cabin pairs natural wood finishes with a contemporary tinted-glass facade, creating a distinctive retreat for your garden or patio.

Step inside, settle onto the thermo aspen benches, and set the lighting to match your mood. An 8 kW Harvia Virta heater and Harvia Xenio digital controls put the sauna experience at the center of your routine, whether you are unwinding on your own or sharing time with friends and family.

Why Choose the Fortis?

• Space for up to four: Create a dedicated place to disconnect and enjoy the warmth together.
• Architectural outdoor design: Nordic thermo spruce and pinewood finishes, a modern eave-style roofline, and dark grey glass bring a refined look to your backyard.
• Comfortable wood interior: Brushed thermo spruce walls pair with moisture-resistant thermo aspen benches.
• Personalized ambiance: Integrated RGB LED lighting lets you adjust the interior color to suit your mood.
• Convenient control: Harvia Xenio CX45 digital controls with Wi-Fi and MyHarvia app connectivity support a personalized sauna experience.
• Fully assembled construction: The cabin arrives assembled with pre-wired electrical systems, reducing on-site assembly work.

Built for Outdoor Living

Multilayer wood fiber insulation and a Firestone EPDM roof complement the cabin's outdoor construction. The front facade features 8 mm Parsol dark grey tinted glass, aluminum framing, and hidden hinges for a clean, contemporary finish.

Key Specifications

• Model: ThermaSol Fortis, 14-FORTIS
• Capacity: Up to 4 people
• Heater: Harvia Virta, 8 kW
• Controls: Harvia Xenio CX45 digital control with Wi-Fi
• Interior: Brushed thermo spruce walls and thermo aspen benches
• Lighting: Integrated RGB LED system
• Roof: Firestone EPDM
• Construction: Fully assembled, pre-wired, and crafted in the USA
• Order type: Made to order

What's Included

• 1 pre-assembled sauna cabin
• 1 Harvia Virta 8 kW sauna heater
• 1 Harvia Xenio CX45 digital control with Wi-Fi
• 3 Harvia AC3020 sauna stone sets
• 1 temperature sensor
• 2 headrests
• 1 wood platform
• MyHarvia app connectivity
• User manual
• 1-year warranty

Plan Your Installation

Review the specification sheet before ordering to confirm space, site preparation, and electrical requirements. Fully assembled and pre-wired does not mean installation-free; confirm the required electrical connection and delivery access for your location.

This is a made-to-order cabin. The current listing indicates a 12–13 week delivery estimate; confirm current timing and delivery arrangements before placing your order.

View the ThermaSol Fortis Specification Sheet