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sizing a sauna heater

Sizing a Sauna Heater


As a general rule of thumb a sauna heater needs 1 Kw  to heat 50 cubic foot of room space.  This is a general rule and an outdoor sauna or a sauna built on outside walls may need to have the heater over sized.

As an example a 6'x7'x7' sauna room should require a 5 Kw heater.  (252 cubic feet divide by 50 = 5.04).

Because a sauna is heating air, you will find most sauna minimize the ceiling height.  A 6-7 ceiling is almost always standard.  Never build a sauna in an 8 foot room as a good portion of the heat will be at the ceiling where it is not used.

Sauna heaters turn off once the desired room temperature is met.  This means that a larger heater simply works less than a smaller heater so there is virtually no energy savings by purchasing an under sized sauna heater.  If indoubt always go up a size.

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