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Starting your sauna heater for the first time

Yes, we do recommend starting any sauna heater with the sauna door open for about 30 minutes max.

This is to burn off any residual chemicals used in the manufacture of the sauna heater elements or housing.

If you go over 30 minutes you are likely to trip the "over-limit" circuit of an electrical sauna. This means your heater has a way to protect itself from working too hard and burning itself out – good design.

My first time doing this, I let my Polar HMR 80 sauna heater go for 45 minutes. The internal sauna room temperature was 120°F with the sauna door open! Since it automatically shut itself off, it required pressing the reset button on the very bottom of the heater (on the Polar brand heaters).