Harvia PRO 20 SL Sauna Stove
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- Manufacturer Warranty Included
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Harvia PRO 20 SL Wood-Burning Sauna Stove with Exterior Feed
The Harvia PRO 20 SL Wood-Burning Sauna Stove with Exterior Feed is a traditional wood sauna heater designed for sauna rooms from 283 to 706 cubic feet. This Pro Series model is built for installations where the heater is fed from an adjacent room, allowing the sauna space to remain cleaner while also creating the visual appeal of a fireplace in the next room.
The Harvia Pro 20 SL is designed to heat two rooms at once, making it a practical choice for sauna bathers who want the warmth and steam of a wood-fired sauna while someone else can enjoy the fire from the adjoining space. Its cast-iron-framed glass door adds ambiance, while the floor-mounted design and connection openings support flexible installation planning.
Engineered and manufactured in Finland, this wood-burning sauna stove combines reliable 24.1kW heating power, durable construction, and authentic sauna performance for small to medium sauna environments.
Why Choose the Harvia PRO 20 SL?
- Wood-burning sauna stove for an authentic traditional sauna experience
- Designed for sauna rooms from 283 to 706 cubic feet
- Exterior-feed design allows loading wood from another room
- Designed to heat two rooms at once
- Functions as both a sauna heater and adjoining-room fireplace feature
- Cast-iron-framed glass door adds warmth and visual ambiance
- Floor model design for dependable installation
- Upper and rear connection openings for installation flexibility
- Designed, engineered, and made in Finland
Required Components
This product requires additional components for proper setup and operation.
- Sauna Stones: Requires a minimum of 88 lbs of sauna stones (2 boxes), sold separately
- Recommended Stones: Harvia Sauna Stones Split-Face AC3020
Please note that each natural stone is unique in shape and size. Purchasing an additional box of stones is recommended to allow for better selection based on fit, form, and function. Additional freight charges may apply for extra stone boxes.
Key Features
- 24.1kW wood-burning sauna stove
- For sauna rooms from 283 to 706 cu. ft.
- Exterior feed design
- Heats two rooms
- Heater and fireplace functionality
- Requires a minimum of 88 lbs of sauna stones
- Cast-iron-framed glass door
- Floor model
- Upper connection opening
- Rear connection opening
- Soot opening
- Designed, engineered, and made in Finland
What's Included
- Harvia PRO 20 SL wood-burning stove
- Stove door
- Ash box
- Installation and operation manual
- 1-year limited warranty (consumer use)
- 1-year limited warranty (commercial use)
Technical Specifications
| SKU | WKPR20SLM |
| Model | 20 PRO SL |
| Kilowatt Rating | 24.1 KW |
| Primary Fuel | Wood |
| Maximum Firewood Length | 13.7" (350 mm) |
| Diameter of Firewood | 3 - 6" (80 - 150 mm) |
| Minimum Sauna Room Size | 283 CF |
| Maximum Sauna Room Size | 706 CF |
| Minimum Room Height | 81.1" (2060 mm) |
| Heater Weight | 154 lbs |
| Shipping Weight with Sauna Stones | 242 lbs |
| Width | 17" (430 mm) |
| Depth | 28.7" (730 mm) |
| Height | 30" (760 mm) |
| Country of Manufacture | Finland |
Manuals, Safety & Downloads
Warranty
This product includes a limited 1-year warranty for consumer use and a limited 1-year warranty for commercial use.
About the Brand
Harvia is a globally recognized sauna manufacturer known for combining traditional Finnish sauna heritage with modern engineering. Its sauna heaters and accessories are designed for dependable performance, authentic heat, and long-term durability across residential and commercial sauna environments.
Learn more at Harvia's official website.
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