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Quick formula to determine the right sauna heater for your space

Our Rule of thumb: Sauna's Cubic feet / 50 = Sauna Heater Power Needed

So ... multiply your sauna's Length x Width x Height (in feet) to calculate the cubic footage of your heat sauna, and then divide by 50.

E.g. a 5' x 8' x 6'6" sauna is 260 cubic feet / 50 = 5.2 and then round up to the next best heater. So the minimum is 5.2 kW to heat this sauna. Some economical choices here would be the Polar HMR 60 (6kW).

And the Finlandia Sauna Heaters, see chart.