Water Used for Sauna Heaters

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Use Only Clear Household Water from the Tap

The water poured on to the heated stones MUST be clean household water for example from the tap.

Chemically treated water may contain  calcareous which leaves a white, sticky layer on the stones and metal surfaces of the heater. Calcification of the stones deteriorates the heating properties.

It also may contain ferrous in the water which leaves a rusty layer on the surface of the heater and elements, and causes corrosion.

IMPORTANT: Do not use water from the swimming pools, spas or hot tubs as it contains chemicals such as chlorine, bromine or sea (salt) water. Using chemically treated water will cause severe damage to the sauna heater and its elements (not to mention that it is unsafe for your health).