Saunas are by nature a dry environment. Water is not required in a sauna, but it is recommended. It makes the air more breathable and increases the humidity, which intensifies the "feeling" of heat. This is accomplished by splashing some water on the rocks.
A sauna is a HIGH HEAT (176-1940F), LOW HUMIDITY environment.
Interior ambient humidity in a home is generally 40-50%. The humidity in a
sauna is between 10 - 20% The sauna heater is actually baking the air
inside the sauna. When water is added over the sauna rocks, there is a
blast of steam, but it dissipates quickly. A sauna should not be confused
with a steambath where a generator produces steam and the humidity is
STEAM SAUNA OR STEAMBATH
Many people use the expression steam sauna.
Most are referring to a steambath as opposed to sauna. A sauna should not
be confused with a steambath. A steambath or steam sauna has a steam
generator located outside that produces steam and pipes it into the room. A
steambath has humidity at or close to 100%. Despite the relatively lower
temperature (100-1200F), the room feels very hot because of the of the
Saunas are very inexpensive to operate. Temperature is
irrelevant; the cost of electricity is based strictly on time usage. A
residential sauna is on for about an hour, once or twice a week. The
average cost for electricity is 7-9 cents per kilowatt-hour. A sauna with a
6 kW heater would cost 40 - 50 cents per use.
Commercial saunas should have a drain in the center of
the floor (sloped to the drain) to facilitate cleaning. Most residential
saunas have drains, but it is not essential. Water should only be used in
moderation. It is splashed on the rocks and evaporates.
A permanent water supply is not required. Under no
circumstances should a water tap be directly over the heater. A sauna
bucket and ladle are the preferred method for applying water to the sauna
For residential, tile is attractive and functional;
however it is also acceptable to have concrete or a PVC waterproof floor
covering over a concrete or wood sub-floor. For commercial installations
we recommend a non-slip ceramic tile over the floor and up the face of
the curb. A removable "duckboard" cedar floor can be placed over the
walking area of the sauna.
The standard height for a sauna is 82-1/2" . This is
more than sufficient to allow for a standard two tier bench. This height is
the most efficient as it limits the cubic area and it keeps the warmest
air closer to the sauna users. The height should never be greater than 8
All heaters are equipped with a thermostat to regulate
the temperature and a 60-minute timer to automatically shut down the sauna
after one hour. There is also a built-in high temperature cut-off to
Exhaust: There is very little condensation from a sauna, so an exhaust vent is not necessary.
Cross Ventilation / Fresh Air:
1. Undercut door 3/4" for fresh air intake.
2. Inlet low behind heater. Outlet high at opposite corner.
Undercutting the door is sufficient in many cases, but install cross ventilation if possible. If not sure, contact our office to review.