Cozy Heat OG Thru-Wall Sauna Stove (12kW / 18kW)

Description

The Cozy Heat OG Thru-Wall Sauna Stove delivers an authentic wood-fired sauna experience with the added convenience of a through-the-wall firebox design. Hand-made in Estonia, where sauna bathing is a deeply rooted national tradition, this stove produces the gentle, long-lasting heat that traditional sauna enthusiasts prefer.

Unlike standard sauna heaters, the OG-TW model allows the firebox to extend through the wall of the sauna room so firewood can be loaded from outside. This design helps keep the sauna interior clean while maintaining the rustic charm of a real wood-burning sauna.

The heater is specifically engineered for pouring water over heated stones to produce rich steam that fills the sauna room with intense warmth and humidity. Its trilateral steel body features elegant lines and a contemporary design that complements both traditional and modern sauna spaces.

Available heating options:

12kW Model
For sauna rooms from 210 to 423 cubic feet

18kW Model
For sauna rooms from 317 to 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, more natural heat compared to electric heaters. The Cozy OG-TW is designed to provide consistent radiant warmth while maintaining efficient combustion.

The internal flame cutter, the most critical component of a wood-burning heater, is made from 5mm thick stainless steel, ensuring exceptional durability and reliable performance even under extreme temperatures.

This stove is also engineered to burn wood more efficiently than comparable sauna heaters, helping reduce fuel usage while producing cleaner emissions.

Key Features

Artistically inventive trilateral design
Wood-burning sauna heater
Durable steel construction
Smoke gases are 6x cleaner than traditional heaters
Certified with German BIMSCH certificate
Uses 25–40% less fuel than comparable sauna stoves
Minimal safety distance requirements
Mild and long-lasting radiant heat
Floor-mounted through-wall design
Designed for pouring water over sauna stones
Hand-made 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 240 lbs of sauna stones

Because natural stones vary in shape and size, purchasing an additional box of stones is recommended to ensure the best fit and optimal heat distribution.

Includes

Product Specifications

Technical