Harvia PRO 20 24kW Wood Burning Sauna Stove | WK200
A 24kW Harvia PRO 20 wood-burning stove — serious output and 88 lbs of stones that drive larger saunas with dense, lasting löyly.
- No electrical hookup: runs entirely on firewood, off-grid.
- 88 lb stone load delivers dense, lasting löyly steam.
- Top or rear flue outlet fits nearly any sauna chimney layout.
See What People Are Saying…
“This has completely transformed my workspace. The natural light is a game changer!”
“Built it in a weekend with my brother. Glass front is the move — feels like a real room, not a closet.”
“I love the design and how easy it was to set up. Highly recommend for any home owner.”
- Description
- Specifications
- What’s Included?
- Documents
- Warranty
Harvia Pro 20 Wood-Fired Sauna Heater – 24kW
Experience the pinnacle of traditional sauna bathing with the Harvia Pro 20 Wood-Fired Sauna Heater, crafted to bring an authentic, invigorating heat to mid-sized saunas between 283 and 706 cubic feet. With an impressive stone capacity of 88 pounds, this robust heater provides a rich, enveloping steam experience that satisfies even the most discerning sauna enthusiasts.
Designed for convenience and style, the Harvia Pro 20 features adjustable legs, allowing for easy installation and positioning. The cast-iron-framed glass window offers a mesmerizing view of the flames, enhancing the relaxing atmosphere as you sweat away the day’s stress. Built with Finnish craftsmanship, this durable 24kW heater is engineered to deliver powerful, even heat, reaching up to 200°F, ensuring a deeply satisfying sauna session.
Key Features:
- Ideal for Sauna Rooms: Suitable for spaces ranging from 353 to 706 cu. ft.
- Powerful Output: 24kW for fast and effective heating
- Generous Stone Capacity: 88 pounds (requires 2 boxes of stones, sold separately)
- Durable Construction: Sturdy steel body with a cast-iron glass door for long-lasting performance
- Enhanced Ambiance: Enjoy the warm glow of the fire through the glass window
- Adjustable Feet: Flexible installation with adjustable legs for secure placement
- Convenient Ash Box: Easy maintenance with an accessible ash box
- Versatile Flue Connections: Connect from the top or rear to fit your sauna layout
- Authentic Finnish Design: Designed, engineered, and manufactured in Finland
- Compact Dimensions: 17" W x 20" D x 30" H, making it perfect for mid-sized spaces
- Warranty: Backed by a 2-year consumer warranty
Elevate your sauna experience with the Harvia Pro 20 – a wood-fired heater built for authentic warmth, outstanding performance, and timeless Finnish design.
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Kilowatt Rating: 24 kW
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Fuel Type: Wood
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Capacity: 283–706 cu. ft.
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Firewood Size:
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Max Length: 15.4" (390mm)
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Diameter: 3–5" (80–150mm)
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Heater Weight: 127 lbs
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Shipping Weight (with stones): 215 lbs
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Dimensions:
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Width: 17" (430mm)
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Depth: 20" (510mm)
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Height: 30" (760mm)
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Flue Outlet: Top or Rear
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Minimum Room Height: 82.2" (2090mm)
Safety Clearances
Safety Distances — Pro 20 (incl. SL, ES, RS, LS, Duo)
| Clearance | Minimum |
|---|---|
| A — stove top to ceiling | 51.2" (1300 mm) |
| B — stove to side wall | 11.8" (300 mm) |
| C — stove to rear wall | 11.8" (300 mm) |
| D — stove front to opposite wall or bench | 11.8" (300 mm) |
Measured from the stove body to any combustible surface. A non-combustible wall behind a protective sheath may be closer — see the manual for sheathed installations. Always confirm against the Installation and Operation Manual linked below before building.
Safety Distances With a Protective Sheath
| Clearance | Pro 20, 20 SL, 20 Duo (WL500 / WL550) |
|---|---|
| B — stove to side wall | 2.4" (62 mm) |
| C — stove to rear wall | 2.4" (62 mm) |
| D — stove front to opposite surface | 16.6" (422 mm) |
| F — sheath to wall | 1.2" (30 mm) |
These clearances apply only with the protective sheath listed above fitted. Without it, use the unsheathed distances given elsewhere on this page. A minimum 2" (50 mm) ventilated gap is required behind the sheath.
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Harvia 20 PRO Sauna Stove
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Installation & Operation Manual
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2-Year Warranty
➕ Optional Add-Ons
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Harvia Sauna Stones – 2 boxes (88 lbs total)
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Pipe Adapter – Converts 4.5" Euro to 6" USA flue size
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Protective Bedding – For combustible floor surfaces
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Protective Sheath Panel – Minimizes safety clearances
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Chimney Kit – Complete venting solution
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Water Tank Heater – Optional wood-fired water heating
