Step 4: Building the Roof and Closing in the Structure of Your DIY Sauna
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Sauna Heater kW Calculator
The power of a sauna heater is measured in kilowatts (kW). The larger your sauna (and the more "cold surfaces" — glass, tile, stone, etc. — the interior of the sauna has), the more kWs your heater needs. Use this simple tool to tell us about your sauna, and we'll tell you exactly how many kWs your sauna heater should have and send you directly to the perfect heaters.
Choose feet or inches
Sauna's interior dimensions
width ×
depth ×
height (feet)
Do you want to provide exact measurements for "cold surfaces" inside the sauna?
How many separate cold surface areas are there in your sauna?
examples: glass windows, tiled walls, stone walls, etc. (do not include the sauna floor)
1st cold surface
×
feet
2nd cold surface
×
feet
3rd cold surface
×
feet
4th cold surface
×
feet
5th cold surface
×
feet