What is Harvia Legend GreenFlame 240?
Harvia Legend GreenFlame 240 is a floor-standing heater from Harvia with 15.9 kW output and 441 lb stone capacity.
Current heater
Harvia Legend GreenFlame 240
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Harvia sauna heater specs
Harvia Legend GreenFlame 240 wood sauna stove specs and 3D room planner
Use this GreenFlame-specific Harvia Legend 240 page to check the WKLE20GM room range, GreenFlame clearances, stone load, WHP chimney path, floor protection, and 3D preview before quoting the package through Sauna Marketplace.
Harvia Legend GreenFlame 240 is a floor-standing heater from Harvia for 353-706 cu ft adjusted sauna rooms. Key planning facts: 15.9 kW output, 441 lb stone capacity, and 82.7" minimum finished ceiling guidance, plus T600 chimney path, 115 mm flue connection, hearth/floor protection, combustion air, and local fire-code review.
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Quick answers
What sauna room size fits Harvia Legend GreenFlame 240?
The published adjusted room-volume range is 353-706 cu ft. Add glass, tile, stone, brick, concrete, or log exposure before choosing the final kW row.
What clearances does Harvia Legend GreenFlame 240 need?
Plan 7.87" side clearance, 9.84" rear clearance, 24.8" front clearance, and a 82.7" minimum finished ceiling check before placing benches or glass.
What chimney does Harvia Legend GreenFlame 240 need?
Plan a T600 chimney path with 115 mm stove connection, the selected WHP chimney parts or AHJ-approved equivalent, lead-through protection, and local fire-code review.
Where should I start with Harvia Legend GreenFlame 240?
Use the 3D designer to validate the room, benches, openings, combustible clearances, chimney lead-through, guard rail, hearth protection, and material schedule before purchase.
Harvia Legend GreenFlame 240 size and clearance table
| Variant | Power | Room volume | Dimensions | Rocks | Side/back | Front | Minimum ceiling | Chimney / install |
|---|---|---|---|---|---|---|---|---|
| Legend 240 GreenFlameWKLE20GM | 15.9 kW | 353-706 cu ft | 23.6" W x 23.6" D x 32.9" H | 440.9 lb | 7.87" | 24.8" | 82.7" | Manual wood stove; chimney and hearth package by installer |
Best fit
- 15.9 kW Harvia heater family for 353-706 cu ft adjusted hot rooms.
- Floor-standing layouts where the heater footprint, front clearance, and bench approach are planned before ordering.
- 441 lb stone capacity with chimney, hearth, heat-shield, and combustion-air planning handled before ordering.
- Rooms that can meet the 82.7" minimum finished ceiling check for the selected size row.
- Floor structure, non-combustible base, stove guard rail, chimney route, and roof lead-through should be resolved with the full room layout.
Designer checks
- Size the room by adjusted volume, including the 3.94 cu ft per sq ft (1.2 m3 per 1 m2) for glass, stone, tile, brick, concrete, or similar cold surfaces rule where it applies.
- Validate side/back clearance 7.87", front clearance 24.8", and bench setback before finalizing benches.
- Check the 82.7" minimum finished ceiling against the room height.
- Carry chimney kit/extensions/damper, lead-through, hearth protection, heat shields, ash handling, and local fire-code review into the material schedule.
- The current 3D preview uses Harvia’s official 3886 Legend 240 CAD body because the local Harvia archive has the GreenFlame 240 manual/safety drawing but no separate GreenFlame-only 3D SAT.
Package notes
- Selected Harvia Legend wood stove body
- 441 lb; Harvia Legend Sauna Stones
- Installation and operation manual
- Harvia Legend Sauna Stones
- Harvia WHP1500 Stainless Steel Chimney Kit
Manual-backed facts
Source
Harvia Legend GreenFlame 240 manual and Legend 240 CAD archive
source: Harvia Legend GreenFlame 240 manual (Legend GreenFlame 240 manual Y05-1390 09/25; checked May 27, 2026)
Mounting
Floor-standing
Floor-standing sizes use their own body height and top clearance.
Model numbers
WKLE20GM
Useful when the store name and manual model number are not identical.
Room volume range
353-706 cu ft
Use adjusted sauna volume after cold surfaces, not just geometric room volume.
Body weight
165.3 lb
Listed body weight before stones; verify shipping weight with the final SKU.
Cold-surface adder
3.94 cu ft per sq ft (1.2 m3 per 1 m2) for glass, stone, tile, brick, concrete, or similar cold surfaces
The calculator applies the brand-family coefficient before selecting a heater size.
Minimum finished ceiling
82.7"
Computed from body height, floor clearance, top clearance, and the manual minimum room height.
Maximum room height
Not listed for these sizes
Verify with the selected manual when designing unusually tall rooms.
Electrical/control
Wood-burning; no electric heater circuit; Manual wood stove; chimney and hearth package by installer
Use the selected kW row and SKU when matching breakers, phases, relays, and controller packages.
Critical differences
Go-to wood stove family for SaunaDesignPro wood-burning sauna plans T600 chimney required; Harvia manuals list 115 mm connection opening and 110 mm minimum flue inner diameter
9 more notes shown below.
Fuel / standard
Wood
Flue class / diameter
T600; 115 mm connection; 110 mm min pipe ID
Connection locations: Verify.
WHP chimney clearance
100 mm insulated chimney to combustibles; 500 mm single-wall pipe to walls (stainless; 375 mm with the black WHP1500M connector)
The insulated chimney runs 220 mm outside diameter over the 115 mm smoke pipe. Keep at least 430 mm of insulated chimney visible in the room. Lead-through insulation must be class A or long-term rated at 750 C or more (Harvia ZSH-200 in the kit).
WHP chimney scope
Vertical roof-pass installs only; standalone outdoor sauna buildings per Harvia support (2026)
For an indoor or residential build, the installer specifies a listed North American chimney path (e.g. UL 103 HT Class A via a 115 mm to 6" adapter) with AHJ sign-off instead of the WHP kit. Harvia 115 mm smoke pipes and WHP chimneys fit all Harvia wood-heated sauna stoves except the Harvia 50, plus the Harvia 10 iron stove.
WHP chimney limits
5 m max chimney elements; 2 m max freestanding element; 3 m max indoor lateral-support spacing
- Go-to wood stove family for SaunaDesignPro wood-burning sauna plans
- T600 chimney required; Harvia manuals list 115 mm connection opening and 110 mm minimum flue inner diameter
- Use Harvia WHP steel chimney kit/extensions/damper or an AHJ-approved equivalent specified by the installer
- Harvia WHP steel chimney installs vertically through the roof only, and Harvia support (2026) specifies it for standalone outdoor sauna buildings - indoor or residential builds need an installer-specified listed chimney path (e.g. UL 103 HT Class A)
- Harvia WHP steel chimney manual lists 100 mm minimum clearance from combustibles to the insulated outer casing; the non-insulated connecting pipe needs 500 mm (stainless WHP1500) or 375 mm (black WHP1500M), with at least 430 mm of insulated chimney left visible
- Align the roof and ceiling lead-through holes to the actual top flue collar, not the center of the rectangular stove footprint
- Harvia Legend smoke-pipe drawing places the Legend 150 top connection center 180±5 mm from the back edge
- Non-combustible base, heat shields, roof/ceiling lead-through, combustion air, and local fire-code review required
- Safety distances apply only with stones placed per the Harvia manual
- GreenFlame 240 manual lists a 2.1 m minimum sauna height and a separate GreenFlame firing/load table.
- GreenFlame 240 uses the GreenFlame manual and the official Harvia 3886 Legend 240 3D SAT body; the saved archive does not include a separate GreenFlame-only 3D SAT.