Product Overview
Cozy Heat OG Through-Wall Wood-Burning Sauna Stove Package makes it easier to build a complete wood-fired sauna heater setup by pairing the Cozy Heat stove with the sauna stones required for the selected output. Choose 12 kW for sauna rooms from 210–423 cu. ft. or 18 kW for rooms from 317–635 cu. ft., then select Split-Face or Round Stone.
Key Features
- Complete package combines the Cozy Heat wood-burning sauna stove with the sauna stones required for the selected output
- Through-wall firebox allows cleaner, more convenient fire tending from outside the sauna
- Open-grid OG design exposes the stone mass for abundant steam and a striking architectural look
- Substantial stone capacity helps maintain smooth, long-lasting radiant heat
Specifications
| Model |
Sauna Volume |
Stove Weight |
Stone Capacity |
Overall Efficiency |
Required Draft |
| 12 kW / HEAT12 |
210–423 cu. ft. (6–12 m³) |
139 lb |
175 lb |
73.9% |
12 Pa |
| 18 kW / HEAT18 |
317–635 cu. ft. (9–18 m³) |
199 lb |
290 lb |
81.3% |
12 Pa |
Additional Technical Data
- Fuel: natural wood logs
- Flue connection diameter: 4.48" (114 mm)
- Minimum smoke-flue cross-section: 12.7 sq. in. (7,850 mm²)
- Minimum ventilation-opening cross-section: 16.5 sq. in. (10,200 mm²)
Minimum Safety Clearances to Combustible Materials
| Model |
Sides |
Back |
Front |
Ceiling |
| 12 kW / HEAT12 |
6.69" (170 mm) |
9.05" (230 mm) |
19.68" (500 mm) |
44.48" (1,130 mm) |
| 18 kW / HEAT18 |
9.05" (230 mm) |
9.05" (230 mm) |
19.68" (500 mm) |
52.75" (1,340 mm) |
Included Sauna Stones
Sauna stones are included with this package. Select Split-Face Stone or Round Stone; the included quantity is sized to meet or exceed the published minimum stone capacity for the selected 12 kW or 18 kW stove.
What's Included
Cozy Heat wood-burning sauna stove in the selected model, heater body and outer frame, 4.48" (114 mm) chimney connection pipe, upper cleaning hole/cleaning hatch, glass heater door, ash box, operating tool/safety cloth, installation and operation manual, and manufacturer's 24-month warranty. Sauna stones, complete chimney/flue system, floor/wall protection and installation accessories are not included unless specifically stated.
Through-Wall Installation Requirements
The TW combustion-chamber extension is designed for loading the stove through a wall. For installation in a concrete or brick wall, the manual specifies a minimum wall-opening width of 10.03" (255 mm) for HEAT12 and 12.40" (315 mm) for HEAT18, a minimum opening height from the floor of 17.32" (440 mm) for HEAT12 and 18.50" (470 mm) for HEAT18, and a maximum wall thickness of 5.9" (150 mm). Keep the firewood on the grate at the rear of the fire chamber and do not burn wood in the combustion-chamber extension.
Installation Note
Install on a floor with adequate load-bearing capacity and provide required noncombustible floor/wall protection, ventilation and chimney connection. The stove is not suitable for connection to a shared flue. Required clearances may be reduced only where the manufacturer permits an approved protective wall or equivalent protection. Installation must comply with the Cozy Heat installation manual and applicable local codes; professional installation may be required.
