Cozy Heat OG Sauna Stove
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The Cozy Heat OG Wood-Burning Sauna Stove is a design-forward, in-room heater for sauna lovers who want real flame, rich steam, and efficient performance. Hand made in Estonia, where sauna bathing is a national tradition, the Cozy OG delivers mild, long-lasting heat over a generous stone mass and is built for pouring water over hot stones for deep, luxurious löyly.
Key Features
- In-room wood-burning sauna stove for authentic, off-grid sauna heat
- Distinctive trilateral body design that creates a sculptural focal point in custom sauna rooms
- Efficient combustion that uses less wood compared to many traditional sauna stoves
- Large stone capacity for deep thermal storage and soft, long-lasting steam
- Glass fire-view door so you can enjoy the glow and sound of a real wood fire
- Floor-mounted installation that works in a wide range of home and cabin sauna layouts
- Designed and engineered in Estonia by a specialist wood-fired sauna stove manufacturer
Required Components
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Sauna Stones:
- Cozy OG 12 kW: Minimum 265 lbs of sauna stones
- Cozy OG 18 kW: Minimum 353 lbs of sauna stones
- Chimney System: A compatible, code-compliant wood-burning sauna chimney and flue kit is required for safe installation.
What’s Included
- Cozy Heat OG wood-burning sauna stove (12 kW or 18 kW model)
- Outer frame of the heater
- Chimney connection pipe (per manufacturer kit)
- Heater body with stone basket
- Heater door with glass viewing window
- Cleaning hatch and ash box
- Installation and Operation Manual
- 2-year manufacturer warranty (residential use)
Specifications: Cozy OG 12 kW
| Model | Cozy OG 12 |
| Heater Type | Wood-burning sauna stove, in-room, floor mounted |
| Power Output | 12 kW |
| Sauna Room Size | 210 to 423 cu ft (approximately 6 to 12 m³) |
| Stone Requirement | Minimum 265 lbs of sauna stones (10 to 15 cm) |
| Maximum Firewood Length | 12.99 in (329 mm) |
| Firewood Diameter | 3.15 to 4.72 in (80 to 120 mm) |
| Minimum Room Height | 72 in (1828 mm) |
| Flue Connection Location | Top |
| Heater Weight | 121 lbs |
| Shipping Weight With Stones | 386 lbs |
| Safety Distance, Front to Back | 50.18 in (1275 mm) |
| Safety Distance, Left to Right | 28.14 in (715 mm) |
| Stove Depth | 21.45 in (545 mm) |
| Stove Width | 19.60 in (498 mm) |
| Stove Height | 27.91 in (709 mm) |
| Primary Fuel | Wood |
| Country of Origin | Estonia |
Specifications: Cozy OG 18 kW
| Model | Cozy OG 18 |
| Heater Type | Wood-burning sauna stove, in-room, floor mounted |
| Power Output | 18 kW |
| Sauna Room Size | 317 to 635 cu ft (approximately 9 to 18 m³) |
| Stone Requirement | Minimum 353 lbs of sauna stones (10 to 15 cm) |
| Maximum Firewood Length | 15.74 in (400 mm) |
| Firewood Diameter | 3.15 to 4.72 in (80 to 120 mm) |
| Minimum Room Height | 82 in (2096 mm) |
| Flue Connection Location | Top |
| Heater Weight | 176 lbs |
| Shipping Weight With Stones | 528 lbs |
| Safety Distance, Front to Back | 54.51 in (1385 mm) |
| Safety Distance, Left to Right | 34.83 in (885 mm) |
| Stove Depth | 25.78 in (655 mm) |
| Stove Width | 22.04 in (560 mm) |
| Stove Height | 27.91 in (709 mm) |
| Primary Fuel | Wood |
| Country of Origin | Estonia |
Why Choose the Cozy Heat OG?
- Authentic wood-fired sauna experience with mild, stable heat and satisfying steam
- Efficient, eco-conscious design that uses less wood and produces cleaner exhaust than many standard stoves
- High stone mass that stores heat and delivers smooth, enveloping löyly for longer sessions
- Unique sculptural look that enhances modern cabins, custom saunas, and luxury wellness spaces
Shipping & Returns
- Ships: Typically within 3 to 7 business days (freight delivery with scheduled appointment)
- Delivery: Free standard U.S. shipping to most locations
- Returns: 14-day return policy on unused, uninstalled stoves in original packaging
Installation and Operation Manual
Frequently Asked Questions
What is the difference between the Cozy OG 12 kW and 18 kW models?
The Cozy OG 12 is designed for sauna rooms from 210 to 423 cubic feet. The Cozy OG 18 is sized for larger rooms from 317 to 635 cubic feet and supports a larger stone mass. If your sauna is bigger, has more glass or tile, or is in a colder climate, the 18 kW model is usually the better choice.
Does the Cozy OG require a chimney?
Yes. A certified wood-burning chimney system is required. Use a flue and chimney kit that is rated for wood-burning sauna stoves and complies with local building and fire codes. Professional installation is strongly recommended for safety and performance.
How many stones do I need for each model?
The Cozy OG 12 requires a minimum of 265 pounds of sauna stones. The Cozy OG 18 requires a minimum of 353 pounds. Many installers recommend ordering an additional box so you can choose stone shapes that fit well and allow good airflow in the basket.
What type of stones should I use?
Use natural sauna stones such as olivine or peridotite in the 10 to 15 cm range. Do not use river rocks or decorative stones, since they can crack or shatter when heated. Proper sauna stones store heat efficiently and create smoother, more pleasant steam.
How long does it take to heat the sauna?
Most saunas reach bathing temperature in about 45 to 75 minutes depending on room size, insulation, stone loading, and wood quality. The 18 kW model typically heats larger rooms more quickly because of its higher output and larger firebox.
Is the glass fire-view door heat-resistant?
Yes. The Cozy OG uses heat-resistant, tempered glass so you can safely enjoy the view of the fire while maintaining a comfortable sauna environment.
Do I need professional installation?
Professional installation is highly recommended. A qualified installer will configure the chimney, verify clearances to combustibles, and make sure the stove complies with local building and fire safety requirements for wood-burning appliances.
Why Buy From Us
FAQs
Shipping & Delivery
Free curbside shipping on all orders. White-glove delivery/setup available at checkout in most areas. We’ll confirm your preferred date after purchase.
Warranty
Full manufacturer warranty, registered at purchase. Need help with a claim? Our U.S. support team handles it directly with the brand.
Returns
New, uninstalled items can be returned within the brand’s policy window. We’ll help coordinate pickup and any restocking requirements.
Installation & Power
Most saunas/hot tubs require dedicated circuits. We provide spec sheets and can recommend licensed installers in your area.
