The Cozy Heat Quattro 18kW Thru-Wall Wood-Burning Sauna Stove is a stylish sauna heater designed to complement the rustic character of a home sauna. Its practical through-the-wall design allows firewood to be loaded from outside the sauna, keeping the interior clean and uncluttered.

Handcrafted in Estonia, where sauna culture is deeply rooted, the Quattro 18kW Thru-Wall Wood-Burning Sauna Stove is built for durability and consistent performance. The flame cutter—one of the most critical components of a wood-burning stove—is made from 5mm-thick stainless steel to withstand high temperatures over time.

Wood-fired sauna stoves deliver steady, long-lasting heat and are designed for pouring water over heated stones to create smooth, even steam. With clean lines and a large viewing window that showcases the glow of the fire, the Quattro 18kW Thru-Wall Wood-Burning Sauna Stove offers a timeless, functional centerpiece for a traditional sauna setup.

Features

• Square 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 thru-wall
• For sauna rooms from 317 to 635 cubic feet
• Stone Requirements:
  • Minimum of 353 lbs of stones (Required 8 boxes sold separately)
    • 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. 
• 2-year warranty
• Designed and engineered in Estonia

Specifications

Kilowatt Rating
18kW

Room Size
317-635 cubic feet

Minimum Room Height
82"

Stone Capacity
265 lbs

Stone Size
4" to 6"

Maximum Firewood Length
15.74" (400 mm)

Diameter of Firewood
3.15" to 4.72" (80mm - 120mm)

Flue Connection Location
Top

Heater Weight
220 lbs

Shipping Weight with Stones
572 lbs

Stove Dimensions
Width: 20.27"
Depth: 30.70"
Height: 28.74"

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

Add-Ons

The following items are essential for proper installation and operation of this product:

• Cozy Heat Traditional Split-Face Sauna Stones (Requires 8 Boxes)
• Cozy Heat Premium Rounded Sauna Stones (Requires 8 Boxes)

User Manuals