RecoSauna Sisu Square 2.3 Outdoor Sauna, 2-6 Person, Thermowood (QST232301-Thermo)

RecoSauna Sisu Square Sauna in Thermowood: Modern Scandinavian Sauna Living

RecoSauna Sisu Square Sauna in Thermowood blends modern Scandinavian architecture with a rich natural timber finish for a sauna that feels as considered as the space around it.

Its open glass frontage creates a brighter, more connected atmosphere, while the 2 to 6 person interior makes it equally suited to quiet solo recovery and shared sauna evenings. Built with a 46 mm solid-wood wall structure, the design combines natural materials with clean lines for a sauna that feels substantial, warm and timeless.

Modern Scandinavian Sauna Design

The Square Sauna collection is designed around a simple idea: make authentic sauna bathing feel at home in contemporary spaces. Tempered tinted glass across the front brings in natural light and creates a more open feeling, while the square silhouette gives the sauna a refined architectural presence.

Built for Relaxation and Everyday Wellness

Inside, a Straight Black Alder or Aspen sauna bench creates a comfortable place to settle into the heat. The sauna can be paired with electric or wood-burning heating, giving you flexibility to shape the experience around your preferred sauna ritual. Choose a matched Harvia heater package above, or supply your own.

Why You'll Love This Square Sauna

• Premium solid-wood construction: Thermowood walls create a natural, inviting sauna environment with a substantial 46 mm profile.
• Bright panoramic frontage: 3 tempered tinted front windows bring a modern, open character to the sauna.
• Comfortable sauna seating: The straight black alder or aspen sauna bench gives you a dedicated place to stretch out, recover and enjoy the heat.
• Flexible heating setup: Designed for electric or wood-burning heating so the sauna can be configured around your preferred experience.
• Made for modern wellness: A clean Scandinavian silhouette makes it equally at home in a private garden, spa setting or dedicated wellness area.

What's Included

• Thermowood wooden sauna structure
• Stainless steel tightening bands
• Bitumen shingles or without shingles
• Tempered tinted glass entry door with wooden knob
• 3 tempered tinted front windows; 650 x 1770 mm / 225 x 1800 mm
• Straight Black Alder or Aspen sauna bench
• Heat-resistant plates for the heater
• Decorative boards at the front and back

Square Sauna Measurements

Measurement	Inches	Centimeters
Exterior Length	91.3 in	232 cm
Exterior Width	90.6 in	230 cm
Exterior Height	89.0 in	226 cm
Wall Thickness	1.81 in	4.6 cm
Floor Thickness	0.71 in	1.8 cm
Glass Door	25.6 x 69.7 in	65 x 177 cm
Front Window Sizes	25.6 x 69.7 in / 8.9 x 70.9 in	65 x 177 cm / 22.5 x 180 cm
Capacity	2-6 People
Wood	Thermowood
Heater Compatibility	Electric or Wood-Burning
Heater Included	Optional Harvia package (see options)

Heater Packages

RecoSauna recommends 9–10.8 kW of heating for the Sisu Square 2.3. Choose a matched Harvia package above for a complete, ready-to-heat sauna, or select "No Heater" if you already have a compatible heater.

• Harvia Cilindro 9kW Package (+$2,020): Harvia Cilindro Half 9 kW pillar heater with built-in controls (ETL listed, 240 V 1-phase) + 5 boxes of Harvia split-face sauna stones.
• Harvia Club K10G 10kW Package (+$3,233): Harvia Club K10G 10 kW floor heater (UL/ETL, 240 V 1-phase) + Harvia Xenio Wi-Fi digital control + 3 boxes of Harvia split-face sauna stones.

All electric packages are 240 V single-phase and must be connected to a dedicated circuit by a licensed electrician (larger heaters need a large dedicated circuit). Kits are delivered without electrical pre-wiring. Need a wood-burning stove instead? Contact us for a quote.

Made to Order

Each RecoSauna is built to order in Finland. Current lead time is approximately 8 weeks from order confirmation; we confirm your estimated delivery schedule after you order. Because each sauna is made to order, RecoSauna saunas are non-returnable; please review dimensions and site requirements before ordering.

Delivery & Unloading

Free curbside delivery to the contiguous United States, with import duties prepaid. The sauna ships crated on a large 18-wheel truck; the carrier calls to book a delivery appointment and delivers to the curb or end of the driveway. The carrier does not unload the crate. Please plan unloading in advance:

• A forklift or other lifting equipment with fork extensions (crates are picked up from the end), or
• A crew of helpers to unload the parts on the truck until the crate can be lifted off, or a tilt tow truck from the local freight terminal.
• Liftgate service may be available for crates of 92" (7 ft) or shorter, quoted on request.

If the crate arrives damaged, accept the delivery, take photos, write "Crate arrived open/damaged – possible hidden damage" on the Bill of Lading and contact us right away. Damage and missing-part claims must be reported within 30 days of delivery. Hawaii, Alaska and remote areas: contact us for a quote.

Not Included

Assembly, foundation, permits and electrical installation are not included. Store the kit dry, level and off the ground until assembly, on a stable, properly drained foundation designed for your site.

Warranty

• Sauna kit: 1 year on wood material
• Doors, windows and hinged parts: 1 year
• Harvia heaters and controls: Harvia manufacturer's warranty

Questions? Call us at (580) 203-7818 or message us.