Skip to content

FREE SHIPPING ON EVERY SAUNA

0% APR financing for 24 months

Wood-Fired heater options

Compare Harvia wood-burning stoves

The Harvia 20, 36 and 50 series side by side.

HeaterHarvia 20 DuoHarvia 20 SLHarvia 36 DuoThis modelHarvia 50 SLHarvia 50 WK500
PowerWood-FiredWood-FiredWood-FiredWood-Fired
ControlNone (wood-fired)None (wood-fired)None (wood-fired)None (wood-fired)
WiFi appNoNoNoNo
Stone capacity3 boxesRequired4 boxes7 boxes
DesignStove + fireplace, glass doorThrough-wall feed, glass doorStove + fireplace, glass doorFloor standing, graphite black
Safety railingSheath availableSheath availableSheath availableOptional
Best for282 to 706 cu ftSmall to medium saunas494 to 1272 cu ft706 to 1766 cu ft

All models are wood-fired and vent through a chimney system. Stone quantities are listed per model.

What size sauna does the Harvia 50 SL heat?

It suits sauna rooms of roughly 706 to 1766 cubic feet and is designed to provide steam for large groups of bathers at once.

How is the stove fired?

The stove is placed in the sauna and the firewood is inserted into the fire chamber from the other side of the wall.

Does it need electricity?

No. It is a wood-burning stove and needs no electrical connection.

How many sauna stones does it need?

The stove requires 7 boxes of sauna stones. The great amount of stones guarantees even heat in a large sauna.

Is it UL listed?

Yes. The 50 SL sauna heater is UL Listed.

Who is the 50 SL designed for?

It is designed for public saunas at camp centers, sports centers and service industry companies, among others.