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Sauna functions in the same way as any room
in your house. Radiators in a room make sure
that the room temperature is maintained at the
desired temperature. Ventilation lets fresh air in
and spent air is lead out. A sauna works in the
same way. However, there are a few
parameters that must be correct for a sauna to
function optimally. The most important
relationship is between the output of the heater
and the volume of the sauna room. If the
power of the heater and the volume of the
room don’t match, it can cause the sauna to
heat up too quickly or the heater to overload.
Heating elements and stones
In the heater there are stainless steel elements
which radiate heat. The heat is transmitted to
stones which are placed in the heater. The
stones help to keep an even temperature in the
sauna. The stone compartment should be airy:
The larger stones are placed on the bottom and
the smaller stones on top. The stones should
cover the heating elements completely. After
some time of usage it may appear that the
amount of stones has diminished; some stones
may crack and then pack tighter together. This
reduces the air circulation in the heater, and it
takes longer time to heat up the sauna. A good
rule of thumb is: if you use your sauna once a
week you need to repack the stones once a
year. Twice a week means repacking twice a
year and so on. Replace cracked, brown or
discoloured stones. We recommend that you
brush and rinse the sauna stones free from
grit before you place them in the heater.
Example of the correct ventilation in
the sauna. Read more about ventilation
on page 16.
The heating elements heat the
stones in the sauna heater.
Brush off the sauna stones from grit
before you place them in the heater.
This is how sauna works
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