Harvia Legend 150 SL 16kW Wood-Burning Sauna Stove with External Feed

Through-Wall Firewood Loading | 264 lb Stone Capacity | 212–459 cu ft | Made in Finland

The Harvia Legend 150 SL is a premium 16kW wood-burning sauna stove built for traditional sauna rooms from 212 to 459 cubic feet. Its standout feature is the external feed design — firewood is loaded from outside the sauna room through the wall, keeping the sauna space clean and the experience uninterrupted.

With a massive 264 lb stone capacity, separated combustion air structure for cleaner burning, a cast-iron glass door, and adjustable feet for easy leveling, the Legend 150 SL delivers authentic Finnish sauna performance with the convenience of through-wall stoking. Designed, engineered, and made in Finland.

Important: Sauna stones and a chimney system are required for operation and are sold separately.

Who This Is For

The Legend 150 SL is ideal for sauna owners and builders who want a high-capacity, traditional wood-burning stove with the convenience of loading firewood from outside the sauna room. It’s a premium choice for custom sauna builds where a clean sauna interior and a large stone mass for soft, long-lasting steam are both priorities.

Key Features

• 16kW wood-burning output — designed for sauna rooms 212–459 cu ft
• External feed design — firewood loaded from outside the sauna room through the wall
• 264 lb stone capacity for soft, comfortable, long-lasting steam (löyly)
• Separated combustion air structure for cleaner, more efficient burning
• Cast-iron glass door for fire visibility and classic sauna ambiance
• Black steel frame with modern open stone design
• Adjustable feet for easier placement and leveling during installation
• Flue connection at back or top for flexible chimney routing
• Designed, engineered, and made in Finland

Specifications

• Model: Legend 150 SL
• SKU: WK150LDSL
• Series: Legend Series
• Power Output: 16kW
• Primary Fuel: Wood
• Feed Style: External feed / through-wall firewood loading
• Room Size: 212–459 cu ft
• Minimum Room Height: 69” (1,750 mm)
• Stone Capacity: 264 lbs
• Maximum Firewood Length: 15” (39 cm)
• Recommended Firewood Diameter: 3”–5.9” (8–15 cm)
• Flue Connection: Back and top
• Width: 21” (530 mm)
• Depth: 28” (730 mm)
• Height: 30” (740 mm)
• Heater Weight: 143 lbs
• Shipping Weight (with stones): 407 lbs
• Country of Origin: Finland

Required Components Sold Separately

• Sauna Stones (required): Minimum 264 lbs (6 boxes) — Harvia AC3020 Olivine Diabase Split-Face Sauna Stones (10–15 cm) recommended. Purchase an extra box to allow for best-fit selection during loading.
• Chimney system: Compatible wood-burning chimney required — consult a licensed installer

What’s Included

• Harvia Legend 150 SL 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

• External feed design requires a wall opening for through-wall firewood loading — plan wall framing accordingly
• 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 back or top
• Sauna stones must be loaded per manufacturer specifications before first use
• Minimum room height: 69” (1,750 mm)
• 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 Legend 150 SL 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 Legend 150 SL Datasheet
• Harvia Sauna Stove Installation & Operation Manual
• Harvia Legend Sauna Stove Installation Manual
• Safety Distances
• Stone Requirements

Complete Your Sauna Setup

Explore more Harvia sauna heaters, stones, and accessories from Prime Regeneration.

• Shop All Sauna Heaters
• Harvia AC3020 Sauna Stones (44 lbs)
• Shop All Sauna Stones

FAQ

How does the external feed design work?
The Legend 150 SL is installed through the sauna wall so that the firebox door faces the adjacent room. Firewood is loaded from outside the sauna, keeping the sauna interior clean and free of wood debris during use.

What size sauna room does the Legend 150 SL support?
The Legend 150 SL is rated for sauna rooms from 212 to 459 cubic feet.

How many sauna stones does it require?
A minimum of 264 lbs (6 boxes) of sauna stones are required and sold separately. Harvia AC3020 Olivine Diabase Split-Face Sauna Stones (10–15 cm) are recommended. Purchase an extra box to allow for best-fit selection during loading.

What chimney system is required?
A chimney system compatible with a wood-burning sauna stove is required. The Legend 150 SL supports flue connection at the back or top. Consult a licensed installer and follow all local building and fire codes.

What wall opening is required for the external feed?
The stove passes through the sauna wall for through-wall firewood loading. Wall opening dimensions and framing requirements are detailed in the Installation & Operation Manual.

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.