Cozy Heat O 18 Sauna Stove (18 kW) | Authorized Dealer
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Cozy Heat O 18 Sauna Stove Cozy Heat
Cozy Heat O 18 Sauna Stove Cozy Heat
Cozy Heat O 18 Sauna Stove Cozy Heat
Cozy Heat O 18 Sauna Stove Cozy Heat
Cozy Heat O 18 Sauna Stove Cozy Heat
Cozy Heat O 18 Sauna Stove Cozy Heat
Cozy Heat

Cozy Heat O 18 Sauna Stove (18 kW)

SKU: COZYO18
Sale price$2,263.50 USD Regular price$2,515.00 USD
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Cozy Heat O 18 Sauna Stove Cozy Heat
Cozy Heat O 18 Sauna Stove (18 kW) Sale price$2,263.50 USD Regular price$2,515.00 USD
Description

The Cozy Heat O 18 is an 18 kW wood-burning sauna stove for rooms of 317–635 cubic feet. It holds 350 lb of stones (sold separately), needs no electrical supply, and requires a code-compliant chimney.

Wood-fired sauna stoves are best for mild and long-lasting heat, designed for pouring water over hot stones to create the perfect amount of steam. Enjoy a satisfying traditional sauna experience with the Cozy Heat O sauna heater!

  • Smoke gases are 6x cleaner
  • Stove utilizes 25%-40% less fuel than comparable sauna stoves
  • Boasts minimal safety distances
What's Included
In the Box
Outer frame of the heater, Chimney pipe, Heater body, Cleaning hatch, Heater door with glass, Ash box, Installation and operation manual
Required to Operate

These are not included. You need them before the sauna will run.

Sauna Stones
350 lb capacity. Cozy Heat specifies split-face or rounded stones: 8 boxes of Cozy Stone (split-face, 44 lb each — 352 lb) or 11 boxes of Cozy Round (rounded, 33 lb each — 363 lb). Never fire the stove empty. Chimney
A listed, code-compliant chimney system, plus floor protection where the manual or local code requires it. Cozy Heat supplies no chimney kit — the file lists Harvia chimney kits for this stove.
Product Specifications
Cozy Heat Part Number COZYO18
Power Output 18 kW
Sauna Room Volume 317–635 cu ft
Stone Capacity 350 lbs
Primary Fuel Wood
Maximum Firewood Length 15.74" (400mm)
Firewood Diameter 3.15" to 4.72" (80mm-120mm)
Flue Connection Top
Color / Finish Black Steel
Material STEEL
Dimensions 23.03" - 24.08"D x 19.88"W x 29.76"H
Weight 154 lbs
Shipping Weight 506 lbs
Installation FLOOR
Certification German BIMSCH certificate
Warranty 2 years (limited)
Ships LTL freight, curbside
Made In Estonia

Marks as supplied by Cozy Heat: German BIMSCH certificate. Requirements vary by jurisdiction — confirm with your building department and insurer before you install.

Clearances & Safety Distances

The minimum distance to combustible surfaces, as published by Cozy Heat. Measure before you frame the bench.

To the Sides
9.05" (230mm) Behind
9.05" (230mm) In Front
19.68" (500mm) Minimum Room Height
82" (2096mm)

These are minimums to combustible material, not recommendations. Your installation manual and local code take precedence, and a solid-fuel appliance normally needs a permit and an inspection in the US.

Sizing

The Cozy Heat O 18 is rated for 317–635 cubic feet.

Measure width × depth × height in feet. Add extra volume for anything that soaks up heat rather than reflecting it — glass, tile, concrete, stone and exposed log all make a room behave larger than its raw measurement. Size to the larger number.

Model Output Room Volume Stones Loading
O 12 12 kW 210–423 cu ft 200 lbs Inside the room
O 18 18 kW 317–635 cu ft 350 lbs Inside the room
O Thru-Wall 12 12 kW 210–423 cu ft 200 lbs Through the wall
O Thru-Wall 18 18 kW 317–635 cu ft 350 lbs Through the wall

Work out your room with the sauna heater size calculator

Accessories for This Model

What Cozy Heat lists for this stove. All sold separately.

Chimney Cover
Cozy Heat Chimney Cover Grid H500, Cozy Heat Chimney Cover Grid H680 Sauna Stones
Cozy Stone, Cozy Round Chimney Kit
Harvia Chimney & Assembly Kit, Barrel, Flat Roof — Cozy Heat supplies no chimney system of its own, so the file lists Harvia
Installation & Use Notes
  • Mount to the clearances published above. They are minimums to combustible material, not recommendations.
  • Confirm your flue diameter and that a top connection suits your build before ordering chimney components.
  • A solid-fuel appliance normally needs a permit and an inspection in the US, and your insurer will usually want to see the sign-off.
  • Load stones loosely by hand so air moves between them, and re-stack once a year, replacing any that have cracked.
  • This is an LTL freight item. It arrives curbside on a pallet — note any damage on the delivery receipt before you sign.
FAQs

How close to the wall can this stove sit?

Cozy Heat publishes 9.05" (230mm) to the sides, 9.05" (230mm) behind and 19.68" (500mm) in front, to combustible material. The room also needs 82" (2096mm) of height. Those are minimums — your manual and local code take precedence.

How many boxes of stones do I need?

The stove holds 350 lb. That is 8 boxes of split-face Cozy Stone at 44 lb, or 11 boxes of rounded Cozy Round at 33 lb. Stones are not included, and Cozy Heat recommends ordering one spare box so you can pick the best-fitting stones.

Is a chimney included?

No. Cozy Heat supplies the stove with its own chimney pipe section, but not a full chimney system. Your supplier file lists Harvia chimney kits for this stove, and they are linked above. A solid-fuel installation normally needs a permit and an inspection.

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Description

The Cozy Heat O 18 is an 18 kW wood-burning sauna stove for rooms of 317–635 cubic feet. It holds 350 lb of stones (sold separately), needs no electrical supply, and requires a code-compliant chimney.

Wood-fired sauna stoves are best for mild and long-lasting heat, designed for pouring water over hot stones to create the perfect amount of steam. Enjoy a satisfying traditional sauna experience with the Cozy Heat O sauna heater!

  • Smoke gases are 6x cleaner
  • Stove utilizes 25%-40% less fuel than comparable sauna stoves
  • Boasts minimal safety distances
What's Included
In the Box
Outer frame of the heater, Chimney pipe, Heater body, Cleaning hatch, Heater door with glass, Ash box, Installation and operation manual
Required to Operate

These are not included. You need them before the sauna will run.

Sauna Stones
350 lb capacity. Cozy Heat specifies split-face or rounded stones: 8 boxes of Cozy Stone (split-face, 44 lb each — 352 lb) or 11 boxes of Cozy Round (rounded, 33 lb each — 363 lb). Never fire the stove empty. Chimney
A listed, code-compliant chimney system, plus floor protection where the manual or local code requires it. Cozy Heat supplies no chimney kit — the file lists Harvia chimney kits for this stove.
Product Specifications
Cozy Heat Part Number COZYO18
Power Output 18 kW
Sauna Room Volume 317–635 cu ft
Stone Capacity 350 lbs
Primary Fuel Wood
Maximum Firewood Length 15.74" (400mm)
Firewood Diameter 3.15" to 4.72" (80mm-120mm)
Flue Connection Top
Color / Finish Black Steel
Material STEEL
Dimensions 23.03" - 24.08"D x 19.88"W x 29.76"H
Weight 154 lbs
Shipping Weight 506 lbs
Installation FLOOR
Certification German BIMSCH certificate
Warranty 2 years (limited)
Ships LTL freight, curbside
Made In Estonia

Marks as supplied by Cozy Heat: German BIMSCH certificate. Requirements vary by jurisdiction — confirm with your building department and insurer before you install.

Clearances & Safety Distances

The minimum distance to combustible surfaces, as published by Cozy Heat. Measure before you frame the bench.

To the Sides
9.05" (230mm) Behind
9.05" (230mm) In Front
19.68" (500mm) Minimum Room Height
82" (2096mm)

These are minimums to combustible material, not recommendations. Your installation manual and local code take precedence, and a solid-fuel appliance normally needs a permit and an inspection in the US.

Sizing

The Cozy Heat O 18 is rated for 317–635 cubic feet.

Measure width × depth × height in feet. Add extra volume for anything that soaks up heat rather than reflecting it — glass, tile, concrete, stone and exposed log all make a room behave larger than its raw measurement. Size to the larger number.

Model Output Room Volume Stones Loading
O 12 12 kW 210–423 cu ft 200 lbs Inside the room
O 18 18 kW 317–635 cu ft 350 lbs Inside the room
O Thru-Wall 12 12 kW 210–423 cu ft 200 lbs Through the wall
O Thru-Wall 18 18 kW 317–635 cu ft 350 lbs Through the wall

Work out your room with the sauna heater size calculator

Accessories for This Model

What Cozy Heat lists for this stove. All sold separately.

Chimney Cover
Cozy Heat Chimney Cover Grid H500, Cozy Heat Chimney Cover Grid H680 Sauna Stones
Cozy Stone, Cozy Round Chimney Kit
Harvia Chimney & Assembly Kit, Barrel, Flat Roof — Cozy Heat supplies no chimney system of its own, so the file lists Harvia
Installation & Use Notes
  • Mount to the clearances published above. They are minimums to combustible material, not recommendations.
  • Confirm your flue diameter and that a top connection suits your build before ordering chimney components.
  • A solid-fuel appliance normally needs a permit and an inspection in the US, and your insurer will usually want to see the sign-off.
  • Load stones loosely by hand so air moves between them, and re-stack once a year, replacing any that have cracked.
  • This is an LTL freight item. It arrives curbside on a pallet — note any damage on the delivery receipt before you sign.
FAQs

How close to the wall can this stove sit?

Cozy Heat publishes 9.05" (230mm) to the sides, 9.05" (230mm) behind and 19.68" (500mm) in front, to combustible material. The room also needs 82" (2096mm) of height. Those are minimums — your manual and local code take precedence.

How many boxes of stones do I need?

The stove holds 350 lb. That is 8 boxes of split-face Cozy Stone at 44 lb, or 11 boxes of rounded Cozy Round at 33 lb. Stones are not included, and Cozy Heat recommends ordering one spare box so you can pick the best-fitting stones.

Is a chimney included?

No. Cozy Heat supplies the stove with its own chimney pipe section, but not a full chimney system. Your supplier file lists Harvia chimney kits for this stove, and they are linked above. A solid-fuel installation normally needs a permit and an inspection.