Cozy Wood-Fired Heater OG
A wood-fired heater in 5 mm structural steel. No electricity, no wiring, no electrician.
From$2690
- COZY wood-fired sauna heater
- Integrated fire chamber
- Large stone basket structure
The Saunum upgrade is quoted, not carted. Choose it and we will confirm the final figure in writing before anything is paid.
Delivered Australia-wide. Installation is not included.
About the Cozy Wood-Fired Heater OG
Construction & materials
| Brand | COZY |
|---|---|
| Origin | Designed and manufactured in Estonia |
| Fuel Type | Wood-fired |
| Operation | Fully off-grid (no electricity required) |
| Material | 5 mm structural steel |
| Stone Size Compatibility | 7.5–15 cm sauna stones |
Dimensions & weight
| Recommended Sauna Room Size | 6–12 m³ |
|---|---|
| Heater Weight (without stones) | 49–72 kg |
| Stone Capacity | 100–120 kg |
| Recommended Sauna Room Size | 9–18 m³ |
| Heater Weight (without stones) | 70–100 kg |
| Stone Capacity | 140–160 kg |
Electrical
No electrical connection required. The heater operates entirely using wood fuel.
Delivery & installation (1/2)
| Minimum Ventilation Opening | 10,200 mm² |
|---|---|
| Minimum Smoke Flue Cross Section | 7,850 mm² |
| Ceiling | 1130 mm |
| Sides | 170 mm |
| Front | 500 mm |
| Back | 230 mm |
| Ceiling | 1340 mm |
| Sides | 230 mm |
| Front | 500 mm |
| Back | 230 mm |
| Fuel | Wood logs up to 33 cm |
| Fuel Quantity (per session) | 3.6 kg (added in three parts) |
Delivery & installation (2/2)
| Required Draught | 12 Pa |
|---|---|
| CO Emissions (13% O₂) | 0.074% / 918 mg/m³ |
| Dust Emissions | 22 mg/m³ |
| Overall Efficiency | 73.9% |
| Average Flue Gas Temperature | 292°C |
| Fuel | Wood logs up to 40 cm |
| Fuel Quantity (per session) | 5.1 kg (added in three parts) |
| Required Draught | 12 Pa |
| CO Emissions (13% O₂) | 0.093% / 1164 mg/m³ |
| Dust Emissions | 35 mg/m³ |
| Overall Efficiency | 81.3% |
| Average Flue Gas Temperature | 234°C |
Warranty & support
Warranty: 5 years COZY heaters are built from heavy-duty 5 mm structural steel and manufactured to rigorous European standards for safety, emissions, and efficiency. Each heater is backed by a 5-year manufacturer warranty, ensuring long-term durability and reliability when installed according to manufacturer guidelines.
Frequently asked questions
Are sauna stones included?
No. Stones are supplied separately for this model — tell us your model and we will quote the correct quantity.
What warranty does it carry?
5 years