Cozy Heat Thru-Wall Sauna Heater - The Rich Nest

Ships in 5–7 business days. Delivery times may vary slightly depending on your location and carrier availability.

Ships in 5–7 business days. Delivery times may vary slightly depending on your location and carrier availability.

Cozy Heat Thru-Wall Sauna Heater

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COZY has taken the craft of building a wood-fired sauna stove to the next level. This Cozy Heat though-the-wall wood-burning sauna stove is hand-made in Estonia - where sauna is a way of life - and is perfect for intimate sauna spaces. 

Wood-burning saunas are best for mild and long-lasting heat, designed for pouring water over hot stones to create the perfect amount of steam. Its through-the-wall design allows you to feed firewood into the stove from outside your sauna room.

The most sensitive part of the wood-burning heater, the flame cutter, is made of 5mm-thick stainless steel making COZY heaters extremely durable. 

Enjoy a relaxing traditional sauna experience with the Cozy Heat TW wood-burning sauna stove!

Model:Cozy 12 Thru-WallKilowatt Rating: 12kW

Primary Fuel: Wood

Maximum Firewood Length: 12.95" (329mm)

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

Minimum Cubic Feet: 210 Cu. Ft.

Maximum Cubic Feet: 423 Cu. Ft.

Minimum Room Height: 72" (1828mm)

Flue Connection Location: Top

Heater Weight: 126 lbs

Shipping Weight with Sauna Stones: 368 lbs

Safety Distance Front to Back: 54.71" (1390mm)

Safety Distance Left to Right: 32.67" (830mm)

Stove Depth: 25.98" (660mm)

Stove Width: 16.92" (430mm)

Stove Height: 27.55" (700mm)


Model: Cozy 18 Thru-Wall

Kilowatt Rating: 18kW

Primary Fuel: Wood

Maximum Firewood Length: 15.74" (400mm)

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

Minimum Cubic Feet: 317 Cu. Ft.

Maximum Cubic Feet: 635 Cu. Ft.

Minimum Room Height: 82" (2096mm)

Flue Connection Location: Top

Heater Weight: 185 lbs

Shipping Weight with Sauna Stones: 537 lbs

Safety Distance Front to Back: 71.06" (1805mm)

Safety Distance Left to Right: 39.56" (978mm)

Stove Depth: 30.51" (775mm)

Stove Width: 19.68" (500mm)

Stove Height: 29.76" (756mm)

Wood-burning

Steel construction

Black color

Mild and long-lasting heat

Smoke gases are 6x cleaner

German BIMSCH certificate

Stove utilizes 25%–40% less fuel than comparable sauna stoves

Boasts minimal safety distances

Floor mount thru-wall

Sauna room sizes:

12kW – 210 to 423 cu.ft.

18kW – 317 to 635 cu.ft.

Stone Requirements:

12kW – minimum of 265 lbs of stones

18kW – minimum of 353 lbs of stones

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 (Additional freight charges will apply).

2-Year Warranty

Designed and engineered in Estonia

  • Outer frame of the heater
  • Chimney pipe 
  • Heater body
  • Cleaning hatch
  • Heater door with glass
  • Ash box
  • Installation and operation manual
  • 2-Year Warranty

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