Description
The Cozy Heat OG Sauna Stove is an authentic wood-burning sauna heater hand-made in Estonia, where sauna bathing is a national tradition. Built
The Cozy Heat SW Thru-Wall Sauna Stove brings authentic wood-fired sauna heating together with the convenience of a through-wall firebox design. Hand-crafted in Estonia, where sauna bathing is deeply rooted in national culture, this heater produces the gentle, long-lasting heat that traditional sauna enthusiasts appreciate.
The SW-TW model allows the firebox to extend through the sauna wall, making it possible to load firewood from outside the sauna room. This keeps the sauna interior clean while maintaining the classic ambiance of a traditional wood-burning sauna.
Designed specifically for pouring water over hot sauna stones, the Cozy Heat SW-TW generates rich steam that fills the room with relaxing warmth and humidity. Its sleek cylindrical design improves heat circulation while also creating a modern visual centerpiece for your sauna.
Available heating capacities:
12kW Model
For sauna rooms from 210 – 423 cubic feet
18kW Model
For sauna rooms from 317 – 635 cubic feet
Available Heating Options
The Cozy Heat OG 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.
Heating Performance
Wood-burning sauna stoves produce a softer and more natural heat compared to electric heaters. The Cozy Heat SW-TW delivers steady radiant warmth while maintaining efficient combustion.
At the core of the heater is a 5mm thick stainless steel flame cutter, the most critical component in any wood-burning sauna heater. This heavy-duty construction ensures long-term durability and reliable performance even under extreme temperatures.
The SW-TW heater is engineered to burn wood efficiently, producing cleaner emissions and reducing fuel consumption compared with many traditional sauna heaters.
Key Features
Convenient through-wall firebox design
Wood-burning sauna heater
Heavy-duty steel construction
Smoke gases are 6× cleaner than traditional heaters
Certified with German BIMSCH certificate
Consumes 25-40% less fuel than comparable sauna stoves
Minimal safety clearance requirements
Produces mild and long-lasting radiant heat
Floor-mounted installation
Designed for pouring water over sauna stones
Hand-crafted in Estonia
Stone Requirements
Proper sauna stones are required for safe and efficient operation.
12kW Model
Minimum 175 lbs of sauna stones
18kW Model
Minimum 220 lbs of sauna stones
Natural sauna stones vary in shape and size. Purchasing an additional box of stones is recommended to ensure the best fit and optimal heat distribution.
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 Choose the Cozy Heat SW-TW Model?
• Load firewood from outside the sauna room
• Keeps the sauna interior clean and comfortable
• Authentic traditional sauna heat
• Premium European craftsmanship
• Efficient wood consumption and cleaner combustion