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Harvia M3 SL

M Series 16.5kW Wood Sauna Stove
w/ Exterior Feed

SKU: WKPR36DUOS | Model: 36 Duo

$1,573.33
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Estimated arrival:

Harvia AC3020

If you are looking to get additional uses out of your sauna stove than this Harvia M3 SL is the stove for you. The M3 SL is placed in the sauna room and your firewood is loaded into the fire chamber from the other side of the wall. The M3 SL will give your small or medium sauna great steam. While someone is enjoying the heat in the sauna room another bather can be relaxing in the next room while appreciating the glow of the flames behind the cast-iron-framed glass door.

Model M3 SL
Feed Type Exterior / Through-the-wall
Heating Capacity 212-459 cubic feet (ACF)
Stone Capacity 66 lbs
Door Material Cast-iron
Viewing Window Glass 
Finish Graphite Black
Primary Material Steel
Installation Type Floor Standing
Required sauna stones 88 lbs (2 boxes) sold separately.
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The Harvia M3 SL Wood-Burning Sauna Stove is designed to deliver an authentic Finnish sauna experience while adding extra convenience to your sauna setup. Installed inside the sauna room, this innovative heater allows you to load firewood from the adjacent room, keeping the sauna space clean and comfortable.

Perfect for small to medium-sized saunas, the Harvia M3 SL produces rich, enjoyable steam for a relaxing and traditional sauna session. The cast-iron framed glass door also allows bathers in the next room to enjoy the warm glow of the fire, creating a cozy atmosphere beyond the sauna.

Combining efficiency, practicality, and classic sauna design, the Harvia M3 SL sauna stove is an excellent choice for traditional wood-fired sauna enthusiasts.

• Heats two rooms
• Heater and fireplace • Wood-burning
• 16.5kW • For sauna rooms from 212 to 459 cu. ft.
• Requires a minimum of 66lbs of stones (2 boxes-AC3020)
Please note that each natural stone is unique in shape and size. We recommend purchasing an additional box of sauna stones to allow you to choose the highest quality of stone for fit, form, and function.
• cast-iron-framed glass door
• Floor model
• Upper connection opening
• Soot opening
• Designed, engineered, and made in Finland
• Dimensions: 15.3" W (390mm) x 25" D (640mm) x 28" H (715mm)
• Limited 1-year warranty (consumer use) and limited 1-year warranty (commercial use)

• Sauna Stove
• Stove door
• Ash box
• Fire chamber extension
• Installation and operation manual
• 1-Year Limited Warranty (Consumer Use) and 1-Year Limited Warranty (Commercial Use)


ModelM3 SL
Kilowatt Rating16.5 KW
Primary FuelWood
Maximum Firewood Length13.7" (350mm)
Diameter of Firewood3 - 6" (80 - 150mm)
Minimum Cubic Feet212 CF
Maximum Cubic Feet459 CF
Minimum Room Height75.4" (1915mm)
Heater Weight99 lbs
Shipping Weight with Sauna Stones187 lbs
Width15.3" (390mm)
Depth25" (640mm)
Height28" (715mm)

About This Delivery: This sauna heater system requires a scheduled appointment. It arrives on a wooden pallet and is encased in three-ply cardboard for solid protection. The driver is responsible for “delivery only” and will provide limited assistance at the site. Prior to shipping, we may contact customers to share shipment details and needs and discuss any extenuating delivery circumstances that may complicate or cause additional delivery expenses. Our goal is to ensure your project’s success.

Freight Quote Requests: Email contact@myelitewellness.com Please include sauna heater model number and full shipping address.


Installation and Operation Manual
Harvia Sauna Stove IOM.pdf
Additional Instructions
Harvia-M3SL-Additional Instructions.pdf
Stone Requirement
Harvia Stone Requirements 02.27.25.pdf

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