Harvia Legend 240 SL 21kW Wood Burning Sauna Stove | WK240LDSL
A 21kW Harvia Legend 240 SL wood-burning stove — loads firewood from outside the sauna, keeping your session smoke-free and your sauna clean.
- No electricity needed: runs entirely on firewood.
- 440 lb stone load holds heat and throws serious steam.
- SL design lets you feed firewood from outside the sauna room.
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 Legend 240 SL with Extension Feed | 21kW Wood-Burning Sauna Stove
Bring the authentic sauna experience to life with the Harvia Legend 240 SL, designed for heating your sauna conveniently from an adjacent room or even outdoors. With its innovative dual-chamber airflow system, this stove ensures cleaner, more efficient combustion—maximizing heat output while minimizing emissions.
Crafted with a modern black steel frame and a large stone capacity, the Harvia Legend 240 SL delivers long-lasting heat and durability. Its impressive 440 lb stone capacity radiates soft, consistent warmth, making every sauna session unforgettable.
Why Choose the Harvia Legend 240 SL?
- Heats from Another Room or Outdoors: The SL (Separate Loading) design lets you load firewood from outside the sauna—keeping your space clean and smoke-free.
- Efficient Burn System: Advanced airflow design channels oxygen directly into the upper fire chamber, improving combustion and performance.
- Flexible Installation: With adjustable legs and a reversible door, you can customize the fit for your sauna layout.
- Compact Safety Distances: Allows closer installation to walls and benches, giving you more freedom in sauna design.
- Optional Water Heating: Compatible with a pipe-mounted water heater for added functionality.
- Built to Last: Designed, engineered, and manufactured in Finland to the highest standards.
Key Features
- Ideal for sauna rooms between 353 – 848 cu. ft.
- Massive 440 lb stone capacity (stones sold separately – 10 boxes required)
- Powerful 21 kW wood-burning heater
- Top flue connection (the SL body has no rear connection opening)
- Soot opening for easy maintenance
- Freestanding design with adjustable feet
- Integrated ash box for effortless cleaning
- Fuel Type: Wood
- Kilowatt Rating: 21 kW
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Firewood Size:
- Max Length: 15.4" (390 mm)
- Diameter: 3–5.9" (8–15 cm)
- Sauna Volume: 353–848 cu. ft.
- Minimum Room Height: 72.8" (1850 mm)
- Flue Location: Top
Dimensions & Weight:
- Width: 23.6" (600 mm)
- Depth: 30.7" (780 mm)
- Height: 32.7" (830 mm)
- Unit Weight: 181 lbs
- Shipping Weight (with stones): 620 lbs
Safety Distances
Safety Distances — Legend 240 SL
| Clearance | Minimum |
|---|---|
| A — stove top to ceiling | 39.4" (1000 mm) |
| B — stove to side wall | 7.9" (200 mm) |
| C — stove to rear wall | 9.8" (250 mm) |
| D — stove front to opposite wall or bench | 24.8" (630 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 the Legend Protection Supplies
| Clearance | Minimum |
|---|---|
| A — side wall to protective sheath WL200 | 1.2" (30 mm) |
| B — rear wall to protective sheath WL200 | 1.2" (30 mm) |
| C — ventilated gap between the WL200 sheath and the stove body | 2.0" (50 mm) |
| D — rear wall to smoke pipe cover WL300 | 6.5" (165 mm) |
These are the letters on the plan view below. Unlike the unprotected distances above, they are the same for every Legend model. The WL100 protective bedding, WL200 protective sheath and WL300 smoke pipe cover are sold separately. Always confirm against the Installation and Operation Manual linked below before building.
- Harvia Legend 240 SL stove body
- Steel frame
- Fire chamber extension
- Reversible stove door
- Integrated ash box
- Installation and operation manual
- 2-Year Consumer Warranty
➕ Optional Add-Ons:
- 10 Boxes of Harvia Sauna Stones
- Harvia Pipe Adapter (4.5" Euro to 6" USA)
- Protective Bedding (for combustible flooring)
- WL200 Protective Sheath Panel (minimizes safety distance)
- WL300 Smoke Pipe Guard
- WHP1500 Complete Chimney Kit
Minimum safety distances with various protection options:
Safety Distances by Protection Option
| Measured from | Minimum distance to a combustible wall or bench |
|---|---|
| Smoke pipe WZ050M, WZ100M, WZ45M, WZ90M, WZ90NM | 13.8" (350 mm) |
| Smoke pipe WZ115050, WZ115100, WZ11545, WZ11590, WZ115030SP | 19.7" (500 mm) |
| Steel chimney WHP1500 | 3.9" (100 mm) |
| Smoke pipe cover WL300 | 6.5" (165 mm) |
| Stove body behind a WL200 protective sheath | 1.2" (30 mm) |
| Stove body, rear, without a sheath | 9.8" (250 mm) |
| Stove body, side, without a sheath | 7.9" (200 mm) |
The four views below are, left to right: an unprotected smoke pipe; a WHP1500 steel chimney with a WL300 smoke pipe cover fitted; the same with a WL200 protective sheath added; and that arrangement seen from the front, where the side with no sheath still needs its full distance. These distances hold only when the stones have been piled carefully enough to cover the stove body and the smoke pipe completely. The front clearance is not shown here and differs by Legend model — take it from that model's own safety-distance table. Always confirm against the Installation and Operation Manual linked below before building.
