Cozy Heat elevates the traditional craft of sauna stove manufacturing with the OG 18kW Thru-Wall Wood-Burning Sauna Stove, handcrafted in Estonia—where sauna culture is a way of life.

The Cozy Heat OG 18kW Thru-Wall Wood-Burning Sauna Stove features a practical through-the-wall design, allowing firewood to be loaded from outside the sauna for cleaner operation and added convenience. Designed for classic wood-fired sauna use, the stove accommodates sauna stones for water-pouring to generate steam as desired.

Built for durability, the stove’s critical flame-cutting component is constructed from 5 mm-thick stainless steel, ensuring long-term reliability under high heat conditions. Its refined trilateral design, clean lines, and contemporary finish make this stove a visually striking centerpiece that complements a wide range of sauna interiors.

Important: Sauna stones are required for operation and are sold separately. This stove requires 8 boxes of sauna stones.

Cozy Heat 18 OG TW is ideal for medium sauna rooms (317–635 cu. ft.).

Features

• Artistically inventive design
• Wood-burning
• Steel construction
• Smoke gases are 6x cleaner
• German BIMSCH certificate
• Uses 25%–40% less fuel than comparable sauna stoves
• Boasts minimal safety clearances
• Mild and long-lasting heat
• Floor mount thru-wall
• 2-year warranty
• Designed and engineered in Estonia

Specifications

Installation Requirements

This stove is intended to be installed through a concrete or brick wall.

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

Complete Your Setup

To install and operate this sauna heater properly, the following components are needed:

• Cozy Heat Traditional Split-Face Sauna Stones: 8 boxes
• Cozy Heat Premium Rounded Sauna Stones: 8 boxes

User Manuals