Harvia M3 Series 16.5kW Wood Sauna Stove
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Harvia M3 16.5kW Wood-Burning Sauna Stove
Classic Finnish Wood Sauna Stove for Rooms 212–459 cu ft | Cast-Iron Glass Door | Made in Finland
The Harvia M3 is a best-selling classic wood-burning sauna stove built for traditional sauna rooms from 212 to 459 cubic feet. With its timeless graphite black finish, cast-iron glass door, stainless steel air-flow spoiler, and authentic 16.5kW wood-fired performance, the M3 creates the warm, rustic atmosphere that defines a true Finnish sauna experience.
Designed, engineered, and made in Finland, the Harvia M3 combines durable construction with classic design details — including an ash box, floor-mounted installation, and flue connection options at the top or back. The glow of the fire, steady radiant heat, and traditional wood-burning character make this stove a dependable choice for sauna owners who want a natural, wood-fired setup.
Important: Sauna stones and a chimney system are required for operation and are sold separately.
Who This Is For
The Harvia M3 is ideal for homeowners and sauna builders who want a proven, traditionally styled wood-burning stove for a smaller sauna room. It’s one of Harvia’s most popular models — a strong choice for residential sauna builds where authentic Finnish wood-fired heat and classic aesthetics are the priority.
Key Features
- 16.5kW wood-burning output — designed for sauna rooms 212–459 cu ft
- Cast-iron glass door for fire visibility and classic sauna ambiance
- Stainless steel air-flow spoiler for efficient heat circulation
- Graphite black finish with timeless Finnish design
- Ash box included for easy cleanup
- Flue connection at top or back for flexible chimney routing
- Floor-mounted installation
- Compatible with optional pipe model water heater
- Designed, engineered, and made in Finland
Specifications
- Model: M3
- SKU: WKM3
- Series: M Series
- Power Output: 16.5kW
- Primary Fuel: Wood
- Room Size: 212–459 cu ft
- Minimum Room Height: 47” (120 cm)
- Stone Capacity: 66 lbs
- Maximum Firewood Length: 14” (35 cm)
- Recommended Firewood Diameter: 3”–6” (8–15 cm)
- Flue Connection: Top and back
- Width: 15.4”
- Depth: 16.9”
- Height: 28.15”
- Heater Weight: 99 lbs (45 kg)
- Shipping Weight (with stones): 165 lbs (75 kg)
- Country of Origin: Finland
Required Components Sold Separately
- Sauna Stones (required): 66 lbs (2 boxes) — see Stone Requirements document for recommended size and type
- Chimney system: Compatible wood-burning chimney required — consult a licensed installer
What’s Included
- Harvia M3 Sauna Stove
- Stove door
- Ash box
- Installation and Operation Manual
Shipping & Delivery
This product ships free via freight to the contiguous United States. It arrives on a wooden pallet in three-ply cardboard packaging with a scheduled delivery appointment. Please inspect your shipment upon arrival and note any visible damage before signing.
Installation Notes
- Floor-mounted installation — requires a non-combustible floor surface or hearth pad
- A compatible chimney system must be installed prior to use — flue connection at top or back
- Sauna stones must be loaded per manufacturer specifications before first use
- Minimum room height: 47” (120 cm)
- Observe all safety clearance distances per the Safety Distances document
- Follow all local building codes and fire safety regulations for wood-burning appliances
- Professional installation strongly recommended
Warranty
The Harvia M3 includes a 1-year limited warranty for consumer use and a 1-year limited warranty for commercial use. As an authorized Harvia retailer, Prime Regeneration ensures full warranty coverage is passed through to you at the time of purchase.
Manuals & Documentation
- Harvia M3 Datasheet
- Installation & Operation Manual
- Safety Distances
- Declaration of Performance
- Stone Requirements
Complete Your Sauna Setup
Explore more Harvia sauna heaters, stones, and accessories from Prime Regeneration.
FAQ
What size sauna room does the M3 support?
The M3 is rated for sauna rooms from 212 to 459 cubic feet. It’s best suited for smaller residential sauna builds.
Does it come with sauna stones?
No — 66 lbs (2 boxes) of sauna stones are required and sold separately. See the Stone Requirements document for recommended size and type.
What chimney system is required?
A chimney system compatible with a wood-burning sauna stove is required. The M3 supports flue connection at the top or back for flexible routing. Consult a licensed installer and follow all local building and fire codes.
Can the M3 be used with a water heater?
Yes — the M3 is compatible with an optional pipe model water heater for added sauna amenities. Contact us for more information on compatible options.
What is the minimum room height?
The minimum room height for the M3 is 47” (120 cm).
Does this ship for free?
Yes — free freight shipping is included to the contiguous United States. A delivery appointment will be scheduled prior to shipment.
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Harvia M3 Series 16.5kW Wood Sauna Stove Review Summary
What people like
Pros
- Authentic Experience: Offers a traditional wood-fired sauna experience with crackling fire and dancing flames visible through the glass door.
- Compact Design: Ideal for smaller saunas and barrel saunas where space is limited.
- Efficient Heat: Delivers substantial heat output for its size, suitable for rooms up to 459 cubic feet.
- Dual Room Heating: The SL model can heat two rooms, with the firebox accessible from outside the sauna.
- Good Value: Considered an excellent value for a wood-burning stove, offering quality Finnish engineering.
Cons
- Installation Complexity: Requires a more complicated installation process involving chimneys and exhaust systems.
- Requires Cleaning: Wood-burning stoves necessitate regular cleaning after each use.
- Stone Purchase: Sauna stones are sold separately and additional boxes may be recommended.
- Chimney Adapter: A specific adapter may be required for North American installations.
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