Harvia M3 SL 16.5kW Wood-Burning Sauna Stove with Exterior Feed
Harvia M3 SL 16.5kW Wood-Burning Sauna Stove with Exterior Feed
Enjoy a traditional wood-fired sauna experience with added convenience using the Harvia M3 SL, a 16.5kW wood-burning sauna stove designed for sauna rooms from 212 to 459 cubic feet. This unique model is installed in the sauna room while firewood is loaded from the opposite side of the wall, making it an excellent choice for layouts that benefit from exterior feed access. The M3 SL can help warm two adjoining spaces while creating a classic sauna atmosphere with the glow of flames visible through its cast-iron-framed glass door.
- Authorized Retailer of Harvia
- Manufacturer Warranty Included
- Free Shipping to the Contiguous US
- Secure Checkout
- U.S.-Based Customer Support
Product Overview
The Harvia M3 SL is designed for sauna owners who want the traditional feel of a wood-burning stove with the added practicality of loading firewood from outside the sauna room. This through-wall design helps keep the sauna area cleaner while allowing someone in the adjoining room to enjoy the warmth and ambiance of the fire through the cast-iron-framed glass door.
Ideal for small to medium sauna rooms, the M3 SL delivers satisfying wood-fired heat, dependable performance, and a classic sauna experience. Its durable construction, upper connection opening, and soot opening support traditional installation needs while making it a strong fit for authentic sauna builds.
This model requires 66 lbs of sauna stones (2 boxes), sold separately.
Key Features
- 16.5kW wood-burning sauna stove for rooms from 212 to 459 cu. ft.
- Exterior feed design allows firewood loading from the other side of the wall
- Can help warm two adjoining rooms
- Cast-iron-framed glass door adds classic fire-view ambiance
- Floor model design
- Upper connection opening
- Soot opening for maintenance access
- Designed, engineered, and made in Finland
What's Included
- Harvia M3 SL sauna stove
- Stove door
- Ash box
- Fire chamber extension
- Installation and operation manual
- Manufacturer warranty documentation
Required Components
The following item is required for proper operation and installation:
- Sauna Stones: 66 lbs (2 boxes), sold separately
Because natural sauna stones vary in shape and size, some customers choose to purchase an additional box to help select the best fit for installation. Additional freight charges may apply for extra stones. Review the installation documentation and safety requirements before purchase to confirm compatibility with your sauna build.
Specifications
| Model | M3 SL |
| Series | M Series |
| Primary Fuel | Wood |
| Kilowatt Rating | 16.5 KW |
| Room Size | 212 to 459 cu. ft. |
| Stone Requirement | 66 lbs (2 boxes), sold separately |
| Maximum Firewood Length | 13.7" (350 mm) |
| Diameter of Firewood | 3" to 6" (80 to 150 mm) |
| Minimum Room Height | 75.4" (1915 mm) |
| Installation Type | Floor model |
| Width | 15.3" (390 mm) |
| Depth | 25" (640 mm) |
| Height | 28" (715 mm) |
| Heater Weight | 99 lbs |
| Shipping Weight with Sauna Stones | 187 lbs |
Shipping & Delivery
This sauna heater ships free to the contiguous US via scheduled freight delivery. It arrives on a wooden pallet and is protected for transit.
The driver is responsible for delivery only and may provide limited site assistance. Prior to shipping, shipment details may be reviewed if there are access limitations or other site conditions that could affect delivery arrangements or create added carrier charges.
Please inspect your shipment upon delivery and note any visible freight damage before signing.
Warranty
Warranty coverage may vary by product use. Review the manufacturer warranty documentation for full details and terms.
Manuals & Downloads
About the Brand
Harvia is one of the world's leading sauna and spa companies, founded in Finland in 1950. Known for their craftsmanship, innovation, and deep roots in sauna culture, Harvia designs and manufactures heaters, controls, and accessories trusted by sauna enthusiasts worldwide.
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