The MW12 ThermoWood® is a compact, expertly handcrafted outdoor sauna designed for 2-3 people, built in Lithuania - a country with one of the world's most celebrated sauna traditions. Every unit is constructed from certified ThermoWood®, a thermally modified timber prized for its exceptional resistance to moisture, warping, and decay, making it the gold standard for outdoor sauna construction. Designed with American backyards in mind, the MW12 delivers an authentic European wellness ritual in a space-saving, architecturally refined footprint.
Precision joinery, tempered glass, LED lighting, and a Harvia KIP 6.0kW heater combine to create an atmosphere of deep relaxation and lasting quality. The MW12 can also be adapted for indoor installation in a dedicated, properly ventilated space - giving you flexible placement options wherever it best suits your lifestyle.
Key Features
ThermoWood® Construction: Thermally modified timber offers superior resistance to moisture, rot, and warping - purpose-built for outdoor conditions year-round.
Harvia KIP 6.0kW Heater: Industry-trusted Finnish heater with a built-in controller, or upgrade to the Xenio WiFi controller for smart, app-based temperature management.
2-3 Person Capacity: Compact and social - ideal for couples, small families, or solo wellness routines with room to spare.
Dimensions - 3' 11 1/4" x 6' 5 3/4" x 6' 11 1/2": Space-efficient footprint fits most backyard layouts without sacrificing interior comfort.
Tempered Glass Door: Adds a sleek, modern aesthetic while allowing natural light into the cabin interior.
LED Lighting: Built-in LED lighting creates a warm, ambient atmosphere for evening or early-morning sessions.
5-Year Structural Warranty: Full structural guarantee on every unit - backed by Mande Spa USA with confidence.
Indoor or Outdoor Installation: Designed for outdoor use but adaptable for indoor spaces with proper ventilation; select exterior components can be omitted for indoor setups.
Handcrafted in Lithuania: Built by skilled craftsmen in a country with centuries of sauna heritage, ensuring meticulous fit and finish on every plank.
Customizable Exterior Frame: The exterior frame can be stained or finished in any color of your choice to match your home or backyard aesthetic.
Shipping
This product requires additional shipping. If you'd like a quote before you purchase, fill out the form on this page or email us at service@omahasportsandgames.com for a delivery ETA or to confirm shipping details.
What's Included
MW12 ThermoWood® sauna cabin (pre-cut, ready for assembly)
Harvia KIP 6.0kW heater with built-in controller
LED lighting
Tempered glass door
Roof shingles and exterior components (for outdoor installation)
Floor plan and assembly plan documentation
Why You'll Love It
The MW12 is the kind of investment that pays off every single week - not just in relaxation, but in the lasting quality of a structure built to endure decades of use. ThermoWood® is trusted by sauna builders across Scandinavia and Northern Europe precisely because it holds up where lesser materials fail, and the MW12 brings that same engineering standard to American backyards. Owners report using their MW12 multiple times per week, year-round, through everything from humid summers to cold winters. With a Harvia heater at its core - the same brand trusted by professional sauna facilities worldwide - you're getting commercial-grade heat performance in a residential package. Whether you're unwinding after a long week or building a daily wellness ritual, the MW12 is a product you'll be proud to own for years to come.
Product Specifications
View Product Specs
Capacity
2-3 people
Dimensions
3' 11 1/4" x 6' 5 3/4" x 6' 11 1/2"
Material
ThermoWood® (thermally modified timber)
Heater
Harvia KIP 6.0kW with built-in controller
Heater Option
Xenio WiFi controller available
Glazing
Tempered glass door
Lighting
LED lighting included
Warranty
5-year structural warranty
Installation
Outdoor (or indoor with proper ventilation)
Origin
Handcrafted in Lithuania
Assembly
Professional assembly available; quoted separately
What is ThermoWood® and why does it matter for an outdoor sauna?
ThermoWood® is timber that has been thermally modified at high temperatures - a process that drives out moisture, eliminates sugars, and fundamentally changes the cell structure of the wood. The result is a material that is dramatically more resistant to rot, warping, and moisture absorption than standard timber. For an outdoor sauna, this means the structure stays tight, stable, and beautiful through rain, humidity, UV exposure, and freezing temperatures - without the need for chemical preservatives.
Can the MW12 be installed indoors?
Yes. The MW12 can be adapted for indoor installation in a dedicated space with adequate ventilation and appropriate flooring. For indoor use, certain exterior components - including roof shingles, metal bands, and rear exterior siding - can be omitted during assembly. Indoor installations require an electric heater only. We recommend consulting with a professional to ensure your space meets ventilation and electrical requirements before installation.
What heater does the MW12 come with, and can I upgrade to WiFi control?
The MW12 is equipped with the Harvia KIP 6.0kW heater, which includes a built-in manual controller. If you prefer smart home integration or remote control via your phone, you can opt for the Xenio WiFi controller upgrade, which allows you to set and monitor sauna temperature from anywhere using the Harvia app.
How long does assembly take, and do I need special skills or tools?
Professional assembly is available and is quoted separately based on your location. If you are within 100 miles of the Mande Spa USA warehouse, professional installation can be arranged directly. Assembly complexity varies based on site preparation and configuration - reach out to us at service@omahasportsandgames.com and we can provide full details for your situation.
Can I customize the exterior color or finish of the MW12?
Absolutely. The exterior frame of the MW12 can be stained or finished in any color of your choice. The black frame shown in product photos is simply one example of a finished look - the sauna ships ready to accept your preferred stain, allowing you to match it to your home, deck, or landscaping.
What does the 5-year structural warranty cover?
The 5-year structural warranty covers the structural integrity of the sauna - the frame, joinery, and ThermoWood® construction. For specific questions about what is and isn't covered, or to initiate a warranty claim, please contact us at service@omahasportsandgames.com and we will work with you and the manufacturer to resolve any issues promptly.
