OG Thru-Wall Sauna Stove Wood Burning Sauna Stove
Cozy Heat has taken the time-honored craft of building sauna stoves to a higher level. This wood-fired sauna stove
is hand-made in Estonia, where sauna bathing is a national tradition.
The OG-TW’s clever “Through-the-Wall” design lets you load firewood from outside your sauna. Wood-burning sauna
stoves produce a mild and long-lasting heat and are designed for pouring water over hot stones to create your
perfect amount of steam.
The part of the wood-burning heater that must be the strongest, the flame cutter, is made of sturdy, 5mm-thick
stainless steel making COZY heaters extremely durable.
Cozy Heat’s OG-TW model has an elegant and sophisticated trilateral design that is elegant and sophisticated,
elevating the aesthetic appeal of your sauna. With its sleek lines and contemporary finish, this stove complements
any sauna decor, creating a luxurious ambiance that beckons you.
Experience the pinnacle of comfort and sophistication with the Cozy Heat OG-TW!
What’s Included
- Outer frame of the heater
- Chimney pipe
- Heater body
- Cleaning hatch
- Heater door with glass
- Ash box
- Installation and operation manual
- 2-Year Warranty

Features
- Artistically inventive design
- Wood-burning
- Steel Construction
- Smoke gases are 6x cleaner
- German BIMSCH certificate
- Stove utilizes 25%-40% less fuel than comparable sauna stoves
- Boasts minimal safety distances
- Mild and long-lasting heat
- Floor mount
-
Sauna room sizes:
- 12kW – 210 to 423 cu.ft.
- 18kW – 318 to 636 cu.ft.
-
Stone Requirements:
- 12kW – minimum of 265lbs of stones
- 18kW – minimum of 353lbs of stones
-
Please note that each natural stone is unique in shape and size. We recommend purchasing an additional box of
sauna stones to allow you to choose the highest quality of stone for fit, form, and function (Additional freight
charges will apply). - 2-Year Warranty
- Designed and engineered in Estonia
Cozy 12 OG Thru-Wall Specifications
- Kilowatt Rating: 12kW
- Primary Fuel: Wood
- Maximum Firewood Length: 12.99″ (329mm)
- Diameter of Firewood: 3.15″ to 4.72″ (80mm-120mm)
- Minimum Cubic Feet: 210 Cu. Ft.
- Maximum Cubic Feet: 423 Cu. Ft.
- Minimum Room Height: 72″ (1828mm)
- Flue Connection Location: Top
- Heater Weight: 139 lbs
- Shipping Weight with Sauna Stones: 404 lbs
- Safety Distance Front to Back: 56.09″ (1425mm)
- Safety Distance Right to Left: 34.05″ (865mm)
- Stove Depth: 27.36″ (695 mm)
- Stove Width: 19.60″ (498 mm)
- Stove Height: 27.91″ (709 mm)
Cozy 18 OG Thru-Wall Specifications
- Kilowatt Rating: 18kW
- Primary Fuel: Wood
- Maximum Firewood Length: 15.74″ (400mm)
- Diameter of Firewood: 3.15″ to 4.72″ (80mm-120mm)
- Minimum Cubic Feet: 317 Cu. Ft.
- Maximum Cubic Feet: 635 Cu. Ft.
- Minimum Room Height: 82″ (2096mm)
- Flue Connection Location: Top
- Heater Weight: 199 lbs
- Shipping Weight with Sauna Stones: 551 lbs
- Safety Distance Front to Back: 60.42″ (1535mm)
- Safety Distance Right to Left: 40.74″ (1035mm)
- Stove Depth: 31.69″ (805 mm)
- Stove Width: 22.04″ (560 mm)
- Stove Height: 29.72″ (755 mm)