
The Harvia Pro 20 SL Wood-Burning Sauna Stove Heater (Black) with Extended Throat provides twice the opportunities to enjoy heat. The Harvia Pro 20 SL Wood-Burning Sauna Stove Heater (Black) is placed in the sauna and the firewood is inserted into the fire chamber from the other side of the wall. While one bather is still sitting in the sauna, the other one can cook sausages over the fire or watch the fire glowing behind the cast-iron-framed glass door. The SL wood-burning heater gives off great steam in small and medium-sized saunas. With its extended throat, The Harvia Pro 20 SL Wood Burning Sauna Stove crackles, burns and gets your small to mid sized sauna up to 200 degrees so you can relax, sweat it out and enjoy your sauna. The extended throat allows you to load the firebox with wood from the outside of your sauna. Complete with a large stone compartment on top, the Harvia Pro 20 SL Wood Burning Sauna Stove features cast iron surrounding a good sized firebox with tempered glass to watch those beautiful flames.
Key Features:
- Floor-Mounted
- Sophisticated Design w/ Sleek Black Steel Frame
- Wood-Burning (24.1kW)
- Extended throat to load firebox from outside the sauna
- Stainless Steel Housing
- Tempered Glass Door
- Adjustable Legs
- Stone Capacity of 88 lbs. (Two units)
*Sauna Heaters are not sold separately - a sauna must be purchased in conjunction with the purpose of any sauna heater or sauna heater package.
Features:
- For classic sauna experiences, use an authentic wood-burning sauna heater.
- Heat from outside: For quieter, cleaner sessions, load firewood through the wall.
- Dual-purpose design: Functions as both a fireplace and a sauna heater
- Glass door with a sturdy frame made of cast iron: Take in the brightness of the fire outside.
- Adjustable legs and a reversible door allow for versatile installation.
- Strong heating components for steady warmth and steam
- Two boxes of big sauna stones (10–15 cm, not included) are needed.
Technical
Features
User group | Households |
Power output | 24.1 kW |
Installation location | Floor |
Installation orientation | - |
Technical documentation languages | DE EN |
Color | Black |
Main material | Steel |
Use environment | Interior - wet area |
Prime energy/fuel | Wood |
Measurements
Product height | 760 mm |
Product width | 430 mm |
Product depth (mm) | 730 mm |
Stone sizes | Ø10–15 cm |
Weights
Net weight (kg) | 62.5 kg |
Stone amount (kg) | 40 kg |
Distances
Safety distance front (non-combustible materials) | 300 mm |
Safety distance front (combustible materials) | 300 mm |
Safety distance behind (non-combustible materials) | 100 mm |
Safety distance behind (combustible materials) | 300 mm |
Safety distance right side (combustible materials) | 300 mm |
Safety distance right side non-combustible materials | 100 mm |
Safety distance left side (combustible materials) | 300 mm |
Safety distance left side non-combustible materials | 100 mm |
Safety distance (Ceiling) | 1300 mm |
Room min. recommended volume | 8 m³ |
Room max. recommended volume | 20 m³ |
Room min. height(depends on connections and therefore from output, star/delta) | 2060 mm |
Logistics
Package height | 765 mm |
Package width | 740 mm |
Package depth | 480 mm |
Gross weight | 65.6 kg |

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