Harvia 20 PRO SL Sauna Wood Burning Stove w/ Exterior Feed | WK200SL

Sale price$1,395.00 USD Regular price$1,555.00 USD
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Harvia 20 PRO SL Sauna Wood Burning Stove w/ Exterior Feed | WK200SL

The Harvia 20 SL offers exceptional convenience, allowing bathers to feed wood into the sauna from another room. The opening direction of the sauna stove door can be changed for ease of use. The Harvia 20 SL is perfect for daily use in small and medium-sized saunas from 283 to 706 adjusted cubic feet (ACF).

Harvia 20 PRO SL Features

  • Heats two rooms
  • Heater and fireplace
  • Wood-burning
  • 24.1kW
  • For sauna rooms from 283 to 706 cu. ft.
  • 88 pound stone capacity
  • cast-iron-framed glass door
  • Floor model
  • Upper connection opening
  • Rear connection opening
  • Soot opening
  • Designed, engineered, and made in Finland
  • Dimensions: 17" W (430mm) x 28.7" D (730mm) x 30" H (760mm)
  • Limited 2-year warranty 
  • Requires 2 bags of stones

Harvia 20 PRO SL Harvia 20 PRO SL Sauna Wood Burning Stove w/ Exterior Feed

Harvia 20 PRO SL Specifications

Have the best of both worlds with the wonderful Harvia Pro 20 SL. Someone can enjoy the sauna while another person relaxes in the next room enjoying the fireplace. Perfect for giving off great steam in small and medium-sized saunas from 283 to 706 cubic feet (CF). 

Model Pro 20 SL
Kilowatt Rating 24.1 KW
Primary Fuel Wood
Maximum Firewood Length 13.7" (350mm)
Diameter of Firewood 3 - 6" (80 - 150mm)
Minimum Cubic Feet 283 CF
Maximum Cubic Feet 706 CF
Minimum Room Height 81.1" (2060mm)
Heater Weight 154 lbs
Shipping Weight with Sauna Stones 242 lbs
Width 17" (430mm)
Depth 28.7" (730mm)
Height 30" (760mm)


Package Contents

  • Wood burning Stove
  • Stove door
  • Ash box
  • Installation and operation manual
  • 2 year warranty

Required for Operation

  • Dry wood, 88 lbs of stones (Harvia AC3000)
  • Recommended Accessory:  Harvia WZ115155

Harvia Pipe Adapter (WZ115155)

All Harvia wood-burning sauna stoves are equipped with standard European exhaust piping that measures at 115mm (4.5").  This adapter is required for North American 155 mm (6") piping conversion.

Safety Distances

Harvia 20 PRO SL Sauna Wood Burning Stove w/ Exterior Feed

Harvia 20 PRO SL Maintenance


  • The ash box should always be emptied before heating the stove so that the combustion air that is lead through the box would cool off the fire grate and lengthen its life span. Get a metal container, preferably standing model, to put the ash in. As the removed ash may include hot embers, do not keep the ash container close to combustible material.
  • Soot and ashes gathered in the smoke canals of the stove should be removed occasionally through the soot openings.
  • Due to large variation in temperature, the sauna stones disintegrate in use. Therefore, they should be rearranged at least once a year or even more often if the sauna is in frequent use. At the same time, any pieces of stones should be removed from the stone space, and disintegrated stones should be replaced with new ones.
  • Wipe dust and dirt from the stove with a damp cloth.


  • The chimney and connection pipes should be swept at regular intervals and especially if the stove has not been used in a long time.
  • Due to incomplete burning of fuel and failure of sweeping the chimney, the soot build-up in the flue may ignite. Actions to be taken in case of a chimney fire:
  1. Close the ash box, stove door and damper plate (if installed).
  2. Contact local fire authority.
  3. Do not try to extinguish fire using water.
  4. After a soot fire, a chimney sweeper must check the stove and the flue before use.

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