Harvia Cilindro 20 17 kW Wood-Burning Sauna Stove
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The Harvia Cilindro 20 is a 17 kW wood-burning sauna stove for rooms of 283–706 cubic feet. It takes 264 lb of 10-15cm sauna stones (sold separately), needs no electrical supply, and requires a code-compliant chimney.
The wood-burning Cilindro brings the pillar silhouette of the electric Cilindro to an off-grid room. A round stainless steel cage holds 264 lb of stones around a central firebox, so heat radiates evenly in every direction instead of being thrown off one flat face.
- Premium wood-burning sauna stove
- Long-lasting and reliable performance
- Unique rear ventilation duct for fast heating
- Durable stainless steel for a quiet operation
- Powerful heater for medium-sized saunas
Sauna Stove, Stop Plug, Soot Opening Stoppers (2), Handle, Auxiliary Handle, Glass Hatch, Combustion Air Deflectors, Flue Connection Pipe, Ash Box, Grate, Flue Pipe Connector, Flue Gas Heat Regulator (Pack of 2), Outer Shell, Frame, Soot Openings (2), Top Connection Hole, Rear Connection Hole, Installation and Operation Manual
These are not included. You need them before the sauna will run.
Sauna Stones264 lb — Harvia specifies 6 × 44 lb boxes of Harvia AC3020. Never run the unit empty. Chimney
A listed, code-compliant chimney system, plus floor protection where the manual or local code requires it.
| Harvia Part Number | WKPC20S |
| Power Output | 17 kW |
| Sauna Room Volume | 283–706 adjusted cu ft |
| Stone Capacity | 264 lbs (119.7 kg) |
| Recommended Stones | Harvia AC3020 |
| Color / Finish | Stainless Steel |
| Material | Steel |
| Dimensions (W × D × H) | 21.9" (557mm) × 21.9" (557mm) × 30.4" (773mm) |
| Weight (Empty) | 136.7 lbs (62 kg) |
| Weight Loaded with Stones | approx. 400 lbs |
| Installation | Floor Mount |
| Certification | CE, EAC |
| Warranty | 2 years (consumer use, +1 year if registered with Harvia); 6 months (commercial use) |
| Ships | LTL freight, curbside |
| Made In | Finland |
Harvia lists this model with CE, EAC marks. These are the European and Eurasian conformity marks, not a UL or ETL listing for North America — confirm requirements with your building department and insurer.
The Harvia Cilindro 20 is rated for 283–706 adjusted cubic feet.
Adjusted cubic feet = width × depth × height in feet, plus 45 cu ft for every square foot of glass, tile, concrete or stone, plus 15 cu ft for every square foot of exposed log wall. A 6 × 7 ft room with a 7 ft ceiling is 294 raw cu ft — add a full-glass door and it becomes 834. Always size to the adjusted number.
| Model | Output | Room Volume | Stones |
|---|---|---|---|
| Cilindro 16 | 16 kW | 212–459 cu ft | 264 lbs |
| Cilindro 20 | 17 kW | 283–706 cu ft | 264 lbs |
- Confirm the flue diameter and whether your chimney connects top or rear before you order chimney components. This is the most common ordering mistake on wood sauna builds.
- Harvia wood stoves use 115 mm (4.5 in) European flue pipe. A North American 6 in chimney needs the Harvia WZ115155 adapter.
- A solid-fuel appliance usually needs a permit and an inspection in the US, and your insurer will normally want to see the sign-off.
- Burn the stove outdoors or with the room ventilated for the first firing to cure the paint. Load stones loosely by hand and re-stack them once a year.
- This is an LTL freight item. It arrives curbside on a pallet and the carrier calls to book a window — have two people and a pallet jack or dolly ready, and note any damage on the delivery receipt before you sign.
- Stones ship separately on their own freight because of the weight.
Will the Harvia Cilindro 20 connect to a US chimney?
Not directly. Harvia wood stoves are built with 115 mm (4.5 in) European flue pipe, so a North American 6 in system needs the Harvia WZ115155 adapter. Confirm your flue diameter and whether the connection is top or rear before ordering.
Can the Harvia Cilindro 20 sit on a wooden floor?
Only with the floor protection the installation manual specifies, and only at the clearances it gives. A Harvia protective shield reduces those clearances, but only by the stated amount and only when it is the shield listed for this stove.
How long does the Harvia Cilindro 20 take to heat up?
Harvia does not publish a figure. As a rule of thumb a correctly sized, well-insulated room with a full stone charge is ready 45 to 75 minutes after lighting, and the stones keep giving heat back long after the fire dies down.
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