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Inicio / Productos / Cozy Heat OG Thru-Wall Sauna Stove Wood-Burning Sauna Stove, Up to 18kW
Cozy Heat OG Thru-Wall Sauna Stove Wood-Burning Sauna Stove, Up to 18kW
A front, straight-on view of a barrel-shaped black metal sauna stove against a white background. The barrel structure is wrapped in an outer cage of vertical bars and sharp, geometric triangular plates, filled with light grey stones. At the bottom center, the dark grey metal firebox door extends noticeably forward from the main body of the stove. The glass viewing window under the embossed 'COZY' logo is dark and unlit, showing an empty, dark interior.
An eye-level view of a luxury, octagonal wooden sauna with panoramic glass walls overlooking a forest. In the foreground to the left, a black metal sauna stove door is installed flush into a textured grey concrete wall panel, showing a bright fire burning behind its glass window. To the right, an open glass entryway leads into the sauna, revealing multi-level, curved wooden benches and structured flooring under warm, integrated lighting.
An authorized retailer graphic is displayed on a plain white background. At the top, the brand name "COZY" is printed in large, black, serif capital letters, framed between two solid horizontal black lines. Centered below this logo, the phrase "Authorized Retailer" is written in a dark blue, bold serif font.
A three-quarter angle view of a barrel-shaped black metal sauna stove designed for thru-wall installation against a white background. The main body features a vertical cage with sharp, overlapping triangular panels packed tightly with rounded grey stones. Extending prominently forward from the lower side is a long, box-shaped black metal firebox extension. The front-facing door includes a square glass viewing window, a curved vertical handle, and the word 'COZY' embossed on top.
A straight-on, close-up view of a black metal sauna stove door installed flush into a textured, grey stone or concrete wall. The door is framed by a matching chamfered metal trim panel. The embossed logo 'COZY' sits above a square glass viewing window, which reveals a lively fire burning with bright orange flames consuming wood logs inside. The door features a curved handle on the left side, four vertical air vents at the top, and a small silver knob.
A side profile view of a black metal sauna stove designed for a thru-wall setup, isolated against a white background. On the left, the main barrel-shaped body features an intricate cage of vertical bars integrated with overlapping diamond and triangular metal plates, packed with smooth, rounded grey rocks. Extending horizontally to the right is a boxy, dark grey firebox tunnel. A small section of the front door's curved metal handle is visible on the far right edge.
Cozy Heat OG Thru-Wall Sauna Stove Wood-Burning Sauna Stove, Up to 18kW
A front, straight-on view of a barrel-shaped black metal sauna stove against a white background. The barrel structure is wrapped in an outer cage of vertical bars and sharp, geometric triangular plates, filled with light grey stones. At the bottom center, the dark grey metal firebox door extends noticeably forward from the main body of the stove. The glass viewing window under the embossed 'COZY' logo is dark and unlit, showing an empty, dark interior.
An eye-level view of a luxury, octagonal wooden sauna with panoramic glass walls overlooking a forest. In the foreground to the left, a black metal sauna stove door is installed flush into a textured grey concrete wall panel, showing a bright fire burning behind its glass window. To the right, an open glass entryway leads into the sauna, revealing multi-level, curved wooden benches and structured flooring under warm, integrated lighting.
An authorized retailer graphic is displayed on a plain white background. At the top, the brand name "COZY" is printed in large, black, serif capital letters, framed between two solid horizontal black lines. Centered below this logo, the phrase "Authorized Retailer" is written in a dark blue, bold serif font.
A three-quarter angle view of a barrel-shaped black metal sauna stove designed for thru-wall installation against a white background. The main body features a vertical cage with sharp, overlapping triangular panels packed tightly with rounded grey stones. Extending prominently forward from the lower side is a long, box-shaped black metal firebox extension. The front-facing door includes a square glass viewing window, a curved vertical handle, and the word 'COZY' embossed on top.
A straight-on, close-up view of a black metal sauna stove door installed flush into a textured, grey stone or concrete wall. The door is framed by a matching chamfered metal trim panel. The embossed logo 'COZY' sits above a square glass viewing window, which reveals a lively fire burning with bright orange flames consuming wood logs inside. The door features a curved handle on the left side, four vertical air vents at the top, and a small silver knob.
A side profile view of a black metal sauna stove designed for a thru-wall setup, isolated against a white background. On the left, the main barrel-shaped body features an intricate cage of vertical bars integrated with overlapping diamond and triangular metal plates, packed with smooth, rounded grey rocks. Extending horizontally to the right is a boxy, dark grey firebox tunnel. A small section of the front door's curved metal handle is visible on the far right edge.

Cozy Heat

COZY OG TW 12

Cozy Heat OG Thru-Wall Sauna Stove Wood-Burning Sauna Stove, Up to 18kW

$2,452.50 - $2,857.50$2,725.00 - $3,175.00
Kilowatt

Estimated to ship:

Call or text anytime 1-844-HYDRO-33 (1-844-493-7633)

LOWEST PRICE GUARANTEE

The Cozy Heat OG TW is an authentic wood-burning sauna stove hand-made in Estonia with through-the-wall design, so the firebox can be filled from outside your sauna. Wood-fired sauna stoves create a mild and long-lasting heat. Designed for pouring water over hot stones for an intense steam and a more satisfying sauna experience.

  • 12kW - For sauna rooms from 210 to 423 cubic feet
  • 18kW - For sauna rooms from 317 to 635 cubic feet

Cozy Heat has taken the time-honored craft of building sauna stoves to a higher level. This wood-fired sauna stove is hand-made in Estonia, where sauna bathing is a national tradition.

The OG-TW's clever "Through-the-Wall" design lets you load firewood from outside your sauna. Wood-burning sauna stoves produce a mild and long-lasting heat and are designed for pouring water over hot stones to create your perfect amount of steam. 

The part of the wood-burning heater that must be the strongest, the flame cutter, is made of sturdy, 5mm-thick stainless steel making COZY heaters extremely durable. 

Cozy Heat's OG-TW model has an elegant and sophisticated trilateral design that is elegant and sophisticated, elevating the aesthetic appeal of your sauna. With its sleek lines and contemporary finish, this stove complements any sauna decor, creating a luxurious ambiance that beckons you.

Cozy wood-fired sauna stoves are engineered for maximum efficiency and environmental sustainability. These stoves achieve exceptional combustion efficiency resulting in lower emissions and reduced firewood consumption of 25-40%, which has earned all Cozy sauna stoves Germany’s highest certification standard, EN 15821:2010, BlmSchV DIN EN 13240, level 2.

Experience the pinnacle of comfort and sophistication with the Cozy Heat OG-TW!

FEATURES

  • Artistically inventive 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
  • Stone requirements:
    • 12kW - Minimum of  175 lbs of stones
    • 18kW - Minimum of 240 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

INCLUDES

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

Model

COZY OG-TW 12

Kilowatt Rating

12kW

Primary Fuel

Wood

Maximum Firewood Length

13" (33 cm)

Diameter of Firewood

4.7" - 5.9" (12-15 cm)

Minimum Cubic Feet

210 Cu. Ft.

Maximum Cubic Feet

423 Cu. Ft.

Minimum Room Height

72" (182.9 cm)

Flue Connection Location

Top

Safety Distance

See Installation and Operation Manual

Stove Dimensions

19.5"W (49.5 cm) x 27.4"D (69.6 cm) x 27.9"H (70.9 cm)

Stove Weight

126 lbs (57.2 kg)

Shipping Weight with Sauna Stones

346 lbs (156.9 kg)

Model

COZY OG-TW 18

Kilowatt Rating

18kW

Primary Fuel

Wood

Maximum Firewood Length

15.7" (40 cm)

Diameter of Firewood

4.7" - 5.9" (12-15 cm)

Minimum Cubic Feet

317 Cu. Ft.

Maximum Cubic Feet

635 Cu. Ft.

Minimum Room Height

82" (208.3 cm)

Flue Connection Location

Top

Safety Distance

See Installation and Operation Manual

Stove Dimensions

22"W (55.8 cm) x 32.1"D (81.5 cm) x 29.7"H (75.5 cm)

Stove Weight

199 lbs (90.3 kg)

Shipping Weight with Sauna Stones

463 lbs (210 kg)

WHY YOU SHOULD BUY WITH US

Personalized Attention: As a small business we can provide individualized service that the big box stores just can't offer.

We Price Match: We offer the best prices online, but if you find lower, call or email us for a price match discount!

Authorized Retailer: We are an authorized retailer for all our brands. Manufacturer's warranties fully apply when you buy with us.

No Sales Tax: Take advantage of no sales tax when you buy with us and save big compared to national chains.

Secure Checkout: Whether ordering by phone or online, your information is always secure.

Fast and Free Shipping: Even the largest products arrive quickly. Final delivery for freight items will be scheduled with you by the carrier at a time of your choosing.
Free Shipping is to the lower 48 contiguous states. Please contact us for a quote to Alaska, Hawaii, or Puerto Rico.

Easy Returns: We help you get it shipped back. Click here for our full return policy.

Our Promise: We promise to treat you right! As a small family owned business, our goal is to treat you in the same manner we'd want our family members to be treated. Let us know how we can be of service! If something goes wrong, you can always ask to speak to a manager.

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