Experience comfort and efficiency with the Harvia Pro 20 SL Wood-Burning Sauna Stove — a dual-function heater designed to deliver authentic Finnish warmth to your sauna while creating a cozy fireplace atmosphere in the adjoining room.

The stove is installed inside the sauna, while firewood is conveniently loaded from the opposite side of the wall, allowing you to heat the sauna without bringing wood indoors. Its cast-iron glass door lets you enjoy the soothing view of the flames, whether you’re relaxing in the sauna or unwinding next door.

Perfect for small and medium-sized saunas from 283 to 706 cubic feet, the Harvia Pro 20 SL ensures consistent heat, efficient wood use, and a naturally relaxing experience. Built with Harvia’s renowned craftsmanship, this model meets CE and BimSchV2 certification standards for performance and safety.

Features

• Heats two rooms
• Heater and fireplace
• Wood-burning stove
• Floor model
• 24.1 kW
• For sauna rooms from 283 to 706 cu. ft.
• Requires a minimum of 88 lb of stones (2 boxes-AC3020)
• Cast-iron-framed glass door
• Upper connection opening
• Rear connection opening
• Soot opening
  
• Designed, engineered, and made in Finland
  
• 2-year warranty

Specifications

What's Included

• Wood Burning Sauna Stove
• Stove Door
• Ash Box
  
• Installation and Operation Manual

Complete Your Setup

To install and operate this wood stove safely, the following components are needed:

Required for Operation

• Sauna Stones —88 lb required (2 boxes)
  • Harvia AC3020
• Compatible Chimney Kit (select one option)
  • Harvia Stainless Steel Sauna Wood Stove Chimney Kit | WHP1500
  • Harvia Black Sauna Wood Stove Chimney Kit | WHP1500M
  • Harvia Stainless Steel Chimney & Assembly Kit, Barrel, Flat Roof
  • Harvia Black Chimney & Assembly Kit, Barrel, Flat Roof
• Chimney Extension (if needed based on roof height)
  • 500mm — Stainless Steel (WHP500) / Black (WHP500M)
  • 1000mm — Stainless Steel (WHP1000) / Black (WHP1000M)

Safety & Installation Accessories

• Harvia 20 Pro Series Protective Sheath | WL550
• Harvia Protective Sheath for Pro 20 Series Sauna Stoves | WL500
• Harvia Sauna Floor Protective Bedding | WL100
• Harvia Chimney Pipe Adapter | WZ115155

Optional Add-Ons

• Harvia AC4000 Decorative White Sauna Stones
• Harvia Stainless Steel Water Tank Heater | WP220ST

Manuals & Resources