COZY HEAT · WOOD-BURNING SAUNA STOVE
Explore the Cozy SW 18 in 3D. Inspect its firebox, preview your room, plan the chimney, compare real photos, and choose the exact 18 kW stove at Sauna Marketplace.
View the exact SW 18 at Sauna Marketplace
The SW 18 is one part of a wood-burning system. Explore what connects it to the roof, then compare the matching SW stone covers.
Illustrative vertical route. Chimney component dimensions, clearances and support locations are specified by the selected system and installer.
The top outlet is 114 mm (4.49 in). Match the connector and any adapter to this exact outlet and the chosen chimney system. A nominal 115 mm label alone does not establish compatibility.
Before ordering: Confirm the measured connection and a manufacturer-approved adapter.
Open source document ↗
OPTIONAL · MATCH THE SW CAGE
The cover adds stone surface around the exposed pipe. It does not replace chimney insulation, a support, or the required clearances.
View SW H500 at Sauna Marketplace ↗Confirm the cover, chimney connection and extra load with your installer. Manufacturer cover specifications ↗
Compare the in-sauna-loading models. This 3D page shows the larger SW 18.
| Specification | SW 12 | SW 18 |
|---|---|---|
| Adjusted volume | 212–424 cu ft / 6–12 m³ | 318–636 cu ft / 9–18 m³ |
| Width × depth | 19.3 × 21.3 in | 21.7 × 25.6 in |
| Stove height | 32.1 in | 34.3 in |
| Minimum room height | 76.7 in | 87.1 in |
| Stone capacity | 265 lb / 120 kg | 397 lb / 180 kg |
| Dry stove weight | 143 lb / 65 kg | 209 lb / 95 kg |
| Side clearance | 6.7 in | 9.1 in |
| Rear / front clearance | 9.1 / 19.7 in | 9.1 / 19.7 in |
| Maximum log length | 13.0 in | 15.7 in |
Nominal stove dimensions and model-specific stone capacities: Cozy manual, SW table ↗. Minimum room heights use the larger overhead-clearance requirement and round upward.
Keep combustible walls, benches, and other materials outside these distances. Plan the chimney and floor protection with your installer.
34.3 in stove + 52.8 in overhead clearance
Use the unrounded manual dimensions to calculate the minimum: 2,210 mm, rounded up to 87.1 in.
The manual’s installation text requires 1,340 mm above COZY 18 stoves. The SW 18 is 870 mm tall. Its model table and drawing also print a smaller 2,100 mm room height. This planner uses the larger requirement. Have the installer resolve the document discrepancy with Cozy before installation.
The chimney has separate clearance and penetration requirements. Explore the component guide and matching covers in the chimney section.
COZYSW18 · black steel · in-sauna loading. These specifications describe the 18 kW model.
Dimensions above use the current manual’s SW 18 table. The individual drawing gives 21.7 × 25.6 × 34.3 in when rounded to one decimal place. The original CAD handle projects approximately 0.6 in farther forward than the drawing: the model retains that geometry, with an overall depth of about 26.2 in. Check the delivered stove before final fitting.
The exact SW 18 row specifies 180 kg (397 lb) of stones; the manual’s general 18-family summary lists a smaller range. The model’s irregular stones are illustrative and do not specify the count or loading arrangement. The original 80 CAD parts retain their shapes, including 29 cage bars.
Allow for 606 lb of stove and nominal stones before adding a chimney or cover. Tile alone does not protect heat-sensitive adhesive or waterproofing. Specify the required heat and ember protection for the floor and loading area.
The manual places fresh air above the stove and a remote outlet near the ceiling for drying. Its minimum ventilation opening is 15.9 sq in of free area. Grille face area is not the same as free area.
Keep the firebox door, ash drawer, cleaning hatch and chimney accessible. Leave the 19.7 in front clearance free of combustible material. Sweep the chimney and connecting pipes regularly and inspect stones for deterioration.
Choose SW 18 / COZYSW18 for in-sauna loading. The TW version is a different product. The black-steel finish matches the US listing.
Allow for a 397 lb stone load and a 606 lb combined stove-and-stone weight. Confirm floor capacity and the required heat and ember protection.
Top flue connection, 4.49 in outlet, 12 Pa draft. Use a compatible engineered chimney system, installed by a specialist. This stove cannot share a flue.
Stones, a complete chimney, and floor or wall protection are separate from the heater-only listing. Accessory availability and current pricing are shown by Sauna Marketplace.
This is heater-only SKU COZYSW18. Stones, a complete chimney system, and required floor or wall protection are separate. The stone appearance in the 3D model illustrates a loaded stove.
Check the adjusted room volume, not just floor area: 318–636 cu ft. Glass, tile, brick, and other uninsulated surfaces increase the effective volume. Also allow at least 87.1 in of finished room height and the stated combustible clearances.
This SW 18 loads inside the sauna. The SW 18 TW is a separate through-wall model with different geometry and installation requirements.
Leave at least 9.1 in on each side and behind, 19.7 in in front, and 52.8 in above the stove to combustible surfaces. These values are rounded up from the manual. Clearances apply to benches as well as walls.
Not automatically. Tile adhesive and waterproofing layers can be damaged by radiant heat. The manual requires protective bedding or equivalent heat protection for a tiled floor, and protection for combustible floors and the loading area.
Use stones intended for sauna stoves and follow the manual supplied with your stove. The hosted manual specifies about 3–6 in stones; the accessory page describes a smaller grade. Confirm the delivered stone grade before ordering. Do not tightly pack the stones or obstruct airflow.
No. BImSchV is emissions evidence, not a UL, ETL, or CSA safety listing. Have a qualified installer confirm local solid-fuel requirements and the chimney design before purchase.