Cozy Heat SW Thru-Wall Sauna Stove
Cozy Heat SW Thru-Wall Sauna Stove
Cozy Heat SW Thru-Wall Sauna Stove
Cozy Heat SW Thru-Wall Sauna Stove
Cozy Heat SW Thru-Wall Sauna Stove
Cozy Heat SW Thru-Wall Sauna Stove
Cozy Heat SW Thru-Wall Sauna Stove
Cozy Heat SW Thru-Wall Sauna Stove
Cozy Heat SW Thru-Wall Sauna Stove
Cozy Heat SW Thru-Wall Sauna Stove
Cozy Heat SW Thru-Wall Sauna Stove

Cozy Heat SW Thru-Wall Sauna Stove

COZY has elevated the art of building wood-fired sauna stoves with the SW-TW, featuring a convenient through-the-wall design that allows you to load firewood from outside the sauna, keeping the interior clean and clutter-free. Handcrafted in Estonia, where sauna bathing is a way of life, these stoves are built for performance, durability, and strength. The flame cutter, made from robust 5mm-thick stainless steel, ensures exceptional durability. Designed to provide mild, long-lasting heat, the SW-TW is perfect for ladling water over hot stones to create a satisfying steam sauna experience. Elevate your comfort and style with the Cozy Heat SW-TW wood stove.

  • 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
  • Sauna room sizes:
  • Stone Requirements:
  • 2-Year Warranty
  • Designed and engineered in Estonia
Model Cozy SW-Thru-Wall 12
Kilowatt Rating 12kW
Primary Fuel Wood
Maximum Firewood Length 2.99" (329mm)
Diameter of Firewood 3.14" 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 161 lbs
Shipping Weight with Sauna Stones 425 lbs
Safety Distance Front to Back 55.89" (1420mm)
Safety Distance Left to Right 33.85" (860mm)
Stove Depth 27.16" (690 mm)
Stove Width 19.29" (490 mm)
Stove Height 32.12" (816 mm)
Model Cozy SW-Thru-Wall 18
Kilowatt Rating 18kW
Primary Fuel Wood
Maximum Firewood Length 15.74" (400mm)
Diameter of Firewood 3.14" 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 236 lbs
Shipping Weight with Sauna Stones 633 lbs
Safety Distance Front to Back 60.22" (1530mm)
Safety Distance Left to Right 40.54" (1030mm)
Stove Depth 31.49" (800 mm)
Stove Width 21.65" (550 mm)
Stove Height 34.25" (870 mm)
  • Outer frame of the heater
  • Chimney pipe 
  • Heater body
  • Cleaning hatch
  • Heater door with glass
  • Ash box
  • Installation and operation manual
  • 2-Year Warranty

Yes, we really do offer FREE shipping! We will send your order at no additional cost to anywhere in the lower 48 states in the US. If you have questions about shipping to Alaska or Hawaii, please contact us through our live chat to discuss options on a custom freight quote.

Cozy Heat SW Thru-Wall Sauna Stove

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Authorized Dealer
Full Warranty Included
Sale price$1,985.00 Regular price$2,200.00
You Save $215.00 (10% Off)

  • 12kW - For saunas from 210 to 423 cu.ft.
  • 18kW - For saunas from 317 to 635 cu.ft.

Quantity:
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Talk to a pro and get started today.

Cozy Heat SW Thru-Wall Sauna Stove

COZY has elevated the art of building wood-fired sauna stoves with the SW-TW, featuring a convenient through-the-wall design that allows you to load firewood from outside the sauna, keeping the interior clean and clutter-free. Handcrafted in Estonia, where sauna bathing is a way of life, these stoves are built for performance, durability, and strength. The flame cutter, made from robust 5mm-thick stainless steel, ensures exceptional durability. Designed to provide mild, long-lasting heat, the SW-TW is perfect for ladling water over hot stones to create a satisfying steam sauna experience. Elevate your comfort and style with the Cozy Heat SW-TW wood stove.

  • 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
  • Sauna room sizes:
  • Stone Requirements:
  • 2-Year Warranty
  • Designed and engineered in Estonia
Model Cozy SW-Thru-Wall 12
Kilowatt Rating 12kW
Primary Fuel Wood
Maximum Firewood Length 2.99" (329mm)
Diameter of Firewood 3.14" 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 161 lbs
Shipping Weight with Sauna Stones 425 lbs
Safety Distance Front to Back 55.89" (1420mm)
Safety Distance Left to Right 33.85" (860mm)
Stove Depth 27.16" (690 mm)
Stove Width 19.29" (490 mm)
Stove Height 32.12" (816 mm)
Model Cozy SW-Thru-Wall 18
Kilowatt Rating 18kW
Primary Fuel Wood
Maximum Firewood Length 15.74" (400mm)
Diameter of Firewood 3.14" 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 236 lbs
Shipping Weight with Sauna Stones 633 lbs
Safety Distance Front to Back 60.22" (1530mm)
Safety Distance Left to Right 40.54" (1030mm)
Stove Depth 31.49" (800 mm)
Stove Width 21.65" (550 mm)
Stove Height 34.25" (870 mm)
  • Outer frame of the heater
  • Chimney pipe 
  • Heater body
  • Cleaning hatch
  • Heater door with glass
  • Ash box
  • Installation and operation manual
  • 2-Year Warranty

Yes, we really do offer FREE shipping! We will send your order at no additional cost to anywhere in the lower 48 states in the US. If you have questions about shipping to Alaska or Hawaii, please contact us through our live chat to discuss options on a custom freight quote.

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FAQ

GENERAL INQUIRIES

We are located in Indianapolis, Indiana.

Yes, we have some great financing options from our partner, Bread. Just choose the monthly payment option at checkout to get started.

SHIPPING

Shipping in the Continental U.S. is free!

Since we carry different brands our products also ship from different locations.  See the list below:

  • Almost Heaven Saunas -  West Virginia
  • Dundalk Leisure Craft - Canada
  • Harvia - Portland
  • Baltic Leisure - Pennsylvania
  • Saunacore - Canada
  • TheraSauna- Iowa

The list below is the current delivery timeline by brand:

  • Almost Heaven Barrel Saunas - 6 to 8 Weeks
  • Almost Heaven Indoor Saunas - 4 to 6 Weeks
  • Amba Products - 1 to 2 weeks
  • Baltic Leisure - 3 to 4 weeks
  • Dundalk Leisure Craft -  Approximately 1 to 2 weeks after the estimated build date
  • Golden Designs Sauna - Within 1 week
  • Saunacore - 2 to 3 weeks
  • TheraSauna - 10 to 12 weeks

We currently do not ship to Alaska but if you are really interested we can request for a custom freight quote.

SAUNA ASSEMBLY

It is an easy assembly. Here is the link to our video gallery for a quick look.

The sauna comes in a crate. You'll need to assemble it but it is a very quick assembly.

INDOOR & INFRARED SAUNA

Our indoor saunas are suitable existing flooring includes concrete, ceramic, vinyl, laminate, tile or solid floors. Carpeting is not recommended.

No, but you can definitely upgrade it. Here is the link to our indoor sauna floor kit.

No, indoor saunas are not built to withstand outdoor temperatures.

It is hardwired and you'll need a licensed electrician.

It is a 220v, 30 or 40 amp fuse (depends on heater size) with a hardwired connection.

Yes, we created a simple tool you can use to estimate your sauna's electric expenses. Click here to go to our custom sauna calculator to find out instantly!

It goes as high as 195F

Yes, we do have a sauna with dual heaters.  Check out the steam/infrared sauna by clicking here.

The infrared sauna's maximum temperature is 150F.

BARREL SAUNA

Yes, it can. It is able to handle all outdoor weather. It is even blizzard ready!

Since we carry different brands, our products also ship from different locations.  See the list below:

  • Almost Heaven Saunas - West Virginia
  • Dundalk Leisure Craft - Canada
  • Saunacore - Canada

Here is the list of the warranties offered per brand:

  • Almost Heaven: Lifetime Lumber Warranty
  • Dundalk Leisure Craft: Five Year Lumber Warranty

The steam you make in either electric or wood burning comes from pouring water on the rocks, which is the same on either one.

Yes, of course! While some gyms and health clubs may suggest that this is not recommended, it is the main purpose of having rocks in a traditional sauna.

POD SAUNA

Yes, you can definitely upgrade your sauna heater to a woodburning stove.

It is highly recommended to make the sauna watertight.

Bevel siding and shingles are both great and will make your pod sauna watertight. It is just a matter of aesthetic preference.

ELECTRIC HEATER

It is a 220v, 30 or 40 amp fuse (depends on heater size) with a hardwired connection.

It is hardwired and you'll need a licensed electrician.

Yes, we created a simple tool you can use to estimate your sauna's electric expenses. Click here to go to our custom sauna calculator to find out instantly!

It goes as high as 195F.

It takes less than an hour, around 35 minutes. 

WOOD BURNING HEATER

Harvia heaters have a 5-year warranty.

The wood stove doesn’t require any special wood.

The chimney kit is sold separately.  

It goes as high as 195F.

It takes less than an hour, around 35 minutes.