Cozy Heat OG Thru-Wall Sauna Stove and Sauna Stones

Cozy Heat OG Thru-Wall Sauna Stove and Sauna Stones

The Cozy Heat OG Thru-Wall Sauna Stove is an authentic wood fired sauna heater hand crafted in Estonia where sauna bathing is a long standing cultural tradition. Its innovative through the wall design allows the firebox to be loaded from outside the sauna room, helping keep the sauna interior clean while making fueling simple and convenient. Wood fired sauna heaters create a mild, long lasting heat that is ideal for traditional sauna bathing and for pouring water over hot stones to generate rich, satisfying steam.

Cozy Heat has refined the traditional sauna stove with premium engineering and durable materials. The flame cutter, one of the most demanding components of any wood burning heater, is constructed from sturdy 5 mm stainless steel for exceptional longevity. The stove also produces significantly cleaner smoke gases and operates with improved fuel efficiency compared to many comparable wood fired sauna stoves.

The OG Thru-Wall stove is available in 12kW and 18kW heating options to match different sauna room sizes. The 12kW model is designed for sauna rooms from 210 to 423 cubic feet, while the 18kW model supports larger rooms from 317 to 635 cubic feet. Its sophisticated trilateral design adds a sleek and modern visual element that complements both traditional and contemporary sauna builds.

Each package includes Cozy Heat sauna stones made from durable olivine diabase, a material known for its excellent heat retention and ability to produce soft, consistent steam when water is poured over the stones. The stones are available in either Traditional Split Face Stones or Premium Rounded Stones, allowing you to choose the appearance and steam style that best suits your sauna experience.

Because sauna stones are naturally unique in shape and size, the stove is offered with multiple stone box quantities. The 12kW stove requires a minimum of 175 pounds of stones, while the 18kW stove requires a minimum of 240 pounds of stones. The additional stone box options are available to give users extra flexibility when stacking stones inside the heater. Having additional stones allows you to select the best fitting pieces, achieve proper airflow between stones, and create an ideal stone layout for consistent heat and steam production.

Key Features

• Authentic wood burning sauna stove hand made in Estonia

• Through wall firebox design allows loading wood from outside the sauna

• Produces mild, long lasting heat ideal for traditional sauna bathing

• Durable steel construction with 5 mm stainless steel flame cutter

• Cleaner burning system with significantly reduced smoke gases

• Uses approximately 25 to 40 percent less fuel than comparable sauna heaters

• Elegant trilateral design enhances the appearance of modern sauna spaces

• Designed for pouring water over hot stones to generate steam

• Includes Cozy Heat olivine diabase sauna stones for heat retention and steam

• Multiple stone box options allow proper stone selection and stacking

• Minimal safety distances allow flexible installation

Install Manual

Shipping

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Why You’ll Love It

The Cozy Heat OG Thru-Wall Sauna Stove combines authentic wood fired sauna tradition with practical modern convenience. Its exterior loading design keeps the sauna interior cleaner and makes fire management easy. High quality materials and expert craftsmanship provide dependable heating performance and long term durability. When paired with premium olivine diabase sauna stones, the heater produces consistent heat and rich steam, delivering a deeply relaxing and authentic sauna experience every time.