ThermaSol Aalto 4-Person Indoor Sauna Cabin

The Aalto's semi-panoramic glass front and flush glass door create an open, airy interior that feels spacious rather than enclosed. Brushed Tyrol wood panels accentuate natural grain patterns for warmth and movement, while thermo-aspen benches and backrests provide a smooth, moisture-resistant seating surface with a striking aesthetic contrast. Multi-layer wood fiber insulation ensures superior heat retention and energy efficiency. Integrated RGB LED color therapy lighting illuminates from recessed positions throughout the interior with a dedicated control for fully customizable ambiance. The corner-friendly layout nestles cleanly into indoor spaces, and the flat-packed construction assembles with basic tools and two people in a few hours. Freestanding — can be disassembled and relocated if necessary.

Key features

• Semi-panoramic glass front with flush glass door
• Brushed Tyrol wood panel exterior — accentuates natural grain
• Thermo-aspen benches and backrests — moisture resistant, smooth, and stable
• Multi-layer wood fiber wall insulation for superior heat retention and energy efficiency
• Harvia Virta 9kW sauna heater with Wi-Fi
• Harvia Xenio CX45 digital control with Wi-Fi
• Integrated RGB LED color therapy lighting with control
• Corner-friendly layout — designed for indoor installation
• Flat-packed with detailed installation instructions
• Freestanding — can be disassembled and relocated if necessary
• Ideal for home wellness spaces, fitness rooms, spas, or boutique wellness centers
• Designed and crafted in the U.S.A.
• 1-year warranty

Brand: ThermaSol
Model: AALTO SAUNA CABIN
Capacity: 3–4 persons
Exterior Construction: Brushed Tyrol wood panels
Interior Material: Thermo-Aspen
Sauna Heater: Harvia Virta 9kW with Wi-Fi
Sauna Control: Harvia Xenio CX45 with Wi-Fi
Lighting: RGB LED color therapy with control
Width: 87" (221 cm)
Depth: 87" (221 cm)
Height: 83" (210.8 cm)
Bench Depth: 24" (61 cm)
Weight: 1,543 lbs (699.9 kg)
Warranty: 1-year

• Flat-packed indoor sauna cabin — brushed Tyrol panels with semi-panoramic glass
• Harvia Virta 9kW sauna heater with Wi-Fi
• Harvia Xenio CX45 digital control with Wi-Fi
• Harvia AC3020 sauna stones (3 boxes)
• Installation instructions
• 1-year warranty

Assembly typically requires two people, basic tools, and a few hours to complete. A licensed electrician must install the heater — required to maintain warranty coverage. The cabin is freestanding and sits directly on existing flooring — the surface must be level and water-resistant. Suitable flooring materials include concrete, ceramic tile, vinyl, or laminate. The corner-friendly layout is designed to nestle cleanly into indoor spaces. The cabin can be disassembled and relocated if necessary. Detailed installation instructions are included.

1-year limited warranty. Covers manufacturing defects in materials and workmanship under normal residential use. Does not cover damage from improper installation, misuse, neglect, unauthorized modifications, or failure to use a licensed electrician for heater installation. Contact support@marterraelements.com with your order number, photos, and a description of the issue. We aim to respond within 2–3 business days. Warranty is non-transferable and requires original proof of purchase.

Free shipping to the contiguous United States. Delivered via flatbed trailer with pre-assembled panels. Customers are notified two weeks prior to the scheduled delivery date to allow time for preparation. A forklift is recommended for unloading — the sauna can also be offloaded manually piece by piece with 3 to 4 people in approximately 30 to 60 minutes. Returns accepted within 30 days of delivery for US customers. All returns must be approved prior to sending back — contact support@marterraelements.com to initiate. Items must be unused, undamaged, in original condition, with original packaging intact. For additional details, please visit our Return & Refund page.