Mild, Long-Lasting Heat for 6–13 m³ Saunas
The Cozy 12 O is a wood-burning sauna heater engineered for gentle, enduring warmth and rich steam. Designed for throwing water onto stones, it delivers the classic sauna feel while keeping comfort front and center. Suitable for sauna rooms of 6–13 m³, this 12 kW class stove is built by specialists with generations of know-how in Estonia and tested to European standards for clean, efficient performance.
Why Choose the Cozy 12 O?
-
Mild, Comfortable Heat: Wood-heated design made for löyly—pour water on hot stones for soft, lasting steam.
-
Certified Clean & Efficient: Meets German BImSchV requirements in TÜV testing without supportive equipment; flue gases are up to 6× cleaner compared to similar heaters.
-
Less Wood, Same Heat: Requires at least 25% less fuel than comparable stoves (up to 40% less in testing), thanks to its advanced combustion design.
-
Compact Safety Clearances: Only 17 cm to flammable materials on the sides without additional protection screens (observe full clearance table below).
-
Built by Sauna Stone Experts: CozyHeat has produced sauna stones for over fifteen years; the stove is optimized for proper stone mass and steam.
Key Features
-
Thermal Output — 11.5 kW: Optimized for rooms of 6–13 m³ (Cozy12 class).
-
Fuel Efficiency: Three-stage air distribution burns flue gases for cleaner, more efficient heating (less wood, cleaner exhaust).
-
Generous Stone Capacity — up to 120 kg: Designed for large, durable sauna stones (7.5–15 cm) to store heat and deliver smooth steam. Stones not included.
-
Clean Combustion: Dust emission and CO figures tested to EN standards; flue gases measured significantly cleaner than typical equivalents.
-
Compliance: EN 15821:2010; BImSchV (level 2) compliant; TÜV SÜD tested.
Thoughtful Design Details
-
Safety Distances (Cozy12): Sides 170 mm, Back 230 mm, Front 500 mm, Ceiling 1130 mm. The side “safety room” to flammable materials can be as low as 17 cm without extra screens.
-
Fuel & Load: Burns wood logs up to 30–33 cm; max fuel load approx. 8 kg.
-
Stone Guidance: Use proper sauna stones (7.5–15 cm). Wash before stacking; pack densely around the body and more open at the top for airflow.
-
Initial Curing: First firing should be done outside or in a well-ventilated space without stones to cure the heat-resistant paint.
-
Variants: Available as INTERNAL or EXTERNAL (TW) through-the-wall model to suit different layouts.
Technical Data (Cozy12 O)
-
Power: 11.5 kW
-
Sauna Room Size: 6–13 m³
-
Fuel: Wood logs up to 30–33 cm
-
Max Fuel Load: 8 kg
-
Stone Capacity: up to 120 kg (stones not included)
-
Efficiency: 73.9% (EN 15821 testing)
-
Clearances: Sides 170 mm, Back 230 mm, Front 500 mm, Ceiling 1130 mm
-
Standards & Testing: EN 15821:2010; BImSchV level 2; TÜV SÜD tested
Versatile Applications
-
Residential Saunas: Gentle, authentic löyly with efficient wood use.
-
Cabins & Off-Grid: No electricity required; ideal for retreats.
-
Outdoor Saunas: Clean-burning performance with compact clearances.
-
Wellness Spaces: Tested emissions and reliable performance for frequent use.
Important Notes
-
Stones are not included and must be purchased separately.
- Observe all installation, ventilation, and clearance requirements. The stove must be connected to the flue by a qualified specialist.
- First heat should be without stones for paint curing; ventilate well.
- Burn only dry natural wood. Never use liquids, treated wood, pellets, coal, or waste.
-
Firewood Feeding variant: internal
See pictures for accessories
| Weight |
59 kg |
| Dimensions |
52 × 51 × 73 cm |
| Firewood Feeding Variant |
Internal, External
|
| Accessories Info |
Base Cozy |
| Weight |
17 kg |
| Dimensions |
50 × 50 × 5 cm |
| Additional Info |
Purchased Separately |
| Accessories Info |
Chimney Black COZY |
| Weight |
25 kg |
| Dimensions |
56 × 24 × 92 cm |
| Additional Info |
Purchased Separately |
| Accessories Info |
Protective Sheath COZY |
| Weight |
30 kg |
| Dimensions |
70 × 50 × 10 cm |
| Additional Info |
Purchased Separately |
| Accessories Info |
Backwall protection COZY |
| Weight |
30 kg |
| Dimensions |
70 × 50 × 5 cm |
| Additional Info |
Purchased Separately |
| Accessories Info |
Stones 20 kg |
| Weight |
20 kg |
| Dimensions |
40 × 30 × 15 cm |
| Additional Info |
Purchased Separately |
