Description
Cozy Heat O Thru-Wall Wood-Burning Sauna Stove
The Cozy Heat O Thru-Wall Sauna Stove delivers the authentic wood-fired sauna experience with added convenience and advanced design. Hand-crafted in Estonia, where sauna bathing is deeply rooted in culture, this heater produces gentle, long-lasting heat and rich steam when water is poured over heated sauna stones.
What makes this model unique is its through-the-wall firebox design, allowing you to load firewood from outside the sauna room. This keeps the sauna interior cleaner while maintaining the traditional atmosphere of a wood-burning sauna.
The heater also features the distinctive circular rim design found in the Cozy O series, which improves heat circulation throughout the sauna and enhances the visual appearance of the heater.
Combined with durable steel construction and highly efficient combustion technology, the Cozy Heat O TW delivers exceptional sauna performance and reliability.
Available Heating Options
The Cozy Heat O TW sauna stove is available in two heating capacities depending on the size of your sauna room.
12kW Model
• Designed for sauna rooms 210 – 423 cubic feet
• Requires a minimum of 200 lbs of sauna stones
18kW Model
• Designed for sauna rooms 317 – 635 cubic feet
• Requires a minimum of 350 lbs of sauna stones
Selecting the correct heating capacity ensures efficient heat distribution and optimal steam production.
Key Features
Through-Wall Firebox Design
The heater allows firewood to be loaded from outside the sauna room, helping keep the sauna interior cleaner and more comfortable.
Unique Circular Rim Design
The innovative circular rim improves heat circulation throughout the sauna while adding a distinctive aesthetic appearance.
Heavy-Duty Steel Construction
Built from high-quality steel materials designed to withstand the extreme heat generated by wood-burning sauna stoves.
Stainless Steel Flame Cutter
The flame cutter is manufactured from 5mm thick stainless steel, ensuring exceptional durability and longevity.
Clean Burning Combustion
Produces up to six times cleaner smoke emissions than many traditional wood sauna heaters.
Fuel Efficient Heating
Consumes 25–40% less firewood compared to comparable sauna stoves.
Steam Sauna Performance
Designed specifically for pouring water over heated stones to create the classic steam sauna experience (löyly).
Minimal Safety Distances
The heater design requires smaller clearances than many wood-burning sauna stoves, making installation easier in compact sauna spaces.
Includes
Outer frame of the heater
Chimney pipe
Heater body
Cleaning hatch
Heater door with glass
Ash box
Installation and operation manual
2-Year Warranty
Product Specifications
Technical
| Installation and Operational Manual | |
| Warranty |
Why Customers Choose the Cozy Heat O Thru-Wall Sauna Heater
• Load firewood from outside the sauna room
• Authentic traditional wood-fired sauna heating
• Hand-crafted in Estonia by sauna specialists
• Innovative circular rim design for improved heat distribution
• Produces soft, long-lasting radiant heat
• Highly fuel efficient combustion technology
• Durable stainless steel internal components