Step into the timeless tradition of sauna bathing with the Cozy Heat OG Thru-Wall Sauna Stove—a handcrafted wood-burning heater designed in Estonia, the birthplace of sauna culture. With its innovative thru-wall loading system, you can fuel your sauna from outside the room, keeping the interior clean and uninterrupted while you relax.
Engineered for long-lasting durability and efficiency, the OG-TW features a 5mm-thick stainless steel flame cutter, ensuring years of reliable performance. Its elegant trilateral design not only enhances heat distribution but also adds a touch of sophistication to any sauna space.
Consuming 25–40% less fuel than traditional stoves and producing 6x cleaner smoke gases, this sauna heater is an eco-conscious choice for authentic sauna enthusiasts. Whether for personal wellness or shared experiences with family and friends, the Cozy Heat OG-TW transforms your sauna into a sanctuary of warmth, relaxation, and rejuvenation.
Key Features
Thru-Wall Design – Load firewood from outside the sauna for convenience, cleanliness, and uninterrupted relaxation.
Efficient Heating – Delivers powerful heat output between 12–18 kW, suitable for sauna rooms from 210 to 636 cu. ft.
Durable Construction – Built with 5mm stainless steel flame cutter for exceptional longevity.
Eco-Friendly Performance – Uses up to 40% less wood and produces significantly cleaner smoke gases compared to traditional stoves.
Elegant Design – Sleek, trilateral body with glass door complements modern sauna aesthetics.
Authentic Sauna Experience – Provides natural wood-fired heat and ambiance, replicating the traditional Estonian sauna.
Models Available: OG-TW 12 / OG-TW 18
Dimensions (D x W x H):
OG-TW 12: 27.36" x 17.32" x 27.91"
OG-TW 18: 21.69" x 22.04" x 29.72"
Primary Fuel: Wood
Power Output: 12–18 kW
Heating Capacity: 210–636 cu. ft.
Material: Stainless Steel
Heater Weight: 139–199 lbs
Flue Connection: Top
Firewood Diameter: 3.15"–4.72"
Stones Included: No
(1) Outer Frame of Heater
(1) Chimney Pipe
(1) Heater Body
(1) Cleaning Hatch
(1) Heater Door with Glass
(1) Ash Box
(1) Installation & Operation Manual
(1) 2-Year Manufacturer’s Warranty
Warranty Information
The Cozy Heat OG-TW Sauna Stove is backed by a 2-year manufacturer’s warranty, covering material and workmanship defects. Warranty ensures long-term peace of mind, reinforcing the durability and reliability of this premium sauna stove.
![Cozy Heat OG Thru-Wall Sauna Stove With Sauna Stones [COZY OG-TW]](http://theprimepinnacle.com/cdn/shop/files/cozy-heat-og-thru-wall-sauna-stove-front-right-view-sak75861.jpg?v=1744816224&width=1445)
![Cozy Heat OG Thru-Wall Sauna Stove With Sauna Stones [COZY OG-TW]](http://theprimepinnacle.com/cdn/shop/files/cozy-heat-og-thru-wall-sauna-stove-right-side-view-sak75861.jpg?v=1744816224&width=1445)