Cozy 12 OG Wood Burning Sauna Heater – 12kW Elegant Cylindrical Stove
The Cozy 12 OG is an elegant cylindrical, wood-burning sauna heater engineered for soft, enduring warmth and rich steam. Built in Estonia by specialists with generations of know-how, it's optimized for pouring water over stones to deliver traditional löyly.
With a tested thermal output of 11.5 kW, the Cozy 12 OG suits sauna rooms of 6–13 m³ and is available in INTERNAL or EXTERNAL (through-wall) variants.
Key Features & Benefits
Clean, Efficient Burning
- Meets German BImSchV requirements in TÜV tests without supportive equipment; flue gases up to 6× cleaner than similar heaters.
- Requires at least 25% less fuel (up to 40% less in testing) while maintaining comfortable heat.
- Compact clearances — safety distance to flammable materials as low as 17 cm at the sides.
- Elegant cylindrical form geometry with ample stone mass for smooth steam and stable temperatures.
Key Technical Features
- Large stone capacity up to 120 kg — designed for 7.5–15 cm stones to store heat and deliver gentle steam (stones not included).
- Burns dry wood logs up to 30–33 cm; typical max load 8 kg.
- Three-part combustion air routing helps reburn flue gases for cleaner exhaust and steady heat.
- Compliant with EN 15821:2010, BImSchV (level 2), and TÜV SÜD tested.
A Closer Look
Swipe to see more

Detail view 1

Detail view 2

Detail view 3
What's Included
- Cozy 12 OG Wood Burning Sauna Heater (Internal or External variant)
- Note: Sauna stones, base, chimney and protective sheath are purchased separately
Technical Specifications
| Technical Details |
| Thermal Output |
11.5 kW |
| Sauna Room Size |
6–13 m³ |
| Stone Capacity |
Up to 120 kg (stones not included) |
| Fuel & Loading |
Dry wood logs up to 30–33 cm; max load approx. 8 kg |
| Weight |
73 kg |
| Dimensions |
66 × 52 × 74 cm |
| Firewood Feeding Variant |
Internal, External |
| Compliance |
EN 15821:2010; BImSchV (level 2); TÜV SÜD tested |
This product is intended for wellness, lifestyle, and educational use only. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease. Please consult a qualified healthcare professional before use if you have any medical conditions.
Professional Installation & Sauna Setup
We work closely with a trusted company that specializes in setting up saunas and similar wellness equipment. At an additional cost, they can professionally handle the installation of your new product, ensuring it's ready to use safely and efficiently.
If you would like to arrange installation, please send an email to sales@corerecovery.com.au and let us know which product you are interested in that requires setup. Our team will provide you with pricing and schedule details.
Special Offer: For orders of multiple products totaling over $30,000, installation is free of charge.
Ensure your wellness equipment is set up correctly and safely. Contact us today to take advantage of our professional installation services!
For products from PlusLife
Each PlusLife sauna is handcrafted and fully assembled at our facility for inspection before shipping. This ensures every component meets our strict quality standards.
- Delivery times vary depending on stock availability. If the model is in stock, dispatch can happen immediately after order confirmation. Production timeframes range between 6 to 12 weeks, depending on the specific model and current manufacturing queue.
- Delivery: Australia-wide curbside delivery as standard, with optional white-glove service
- Access: For difficult access properties, please be available on the day to assist our drivers
- Packaging: Delivered flat-packed for easy movement and assembly
- Pickup: Free collection available from our Sydney warehouse