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Evolution Of The Sauna Heater
By Julie-Ann Amos
The sauna and the first sauna heaters were invented in Finland over 2000 years
ago, when the Finns discovered the many health benefits of saunas. It was so
much a part of their culture that Finnish emigrants took the sauna tradition
with them wherever they went in the world, introducing it to other countries and
cultures. Since that time it has become extremely popular all over the globe,
while remaining an integral part of life in Finland itself.
The sauna experience is revered and honored in Finland, to the point that it is
viewed as a spiritual, almost sacred practice. It provides a number of health
benefits, including:
• Relief of muscle soreness
• Clearing of respiratory system
• Easing of discomfort from arthritis
• Cleansing of body toxins
• Improved circulation
• Relaxation and stress relief
So how does a sauna generate the heat and moisture necessary to make it such an
enjoyable experience? Let's take a look.
The First Sauna Heaters
The key to any sauna is the heater, which has evolved tremendously since the
first saunas were built into embankments in the ground. Written records dating
back to 1112 describe the first saunas as using stones for heaters, with the
stones first being heated using a wood fire in a stone stove. This method
continued to be used as the Fins progressed to above-ground saunas built with
large logs.
The wood fire method of heating a sauna was a slow, smoky process. It took up to
12 hours to bring the room up to the proper temperature and smoke from the wood
fire remained in the sauna itself, turning the inside black with soot. The smoke
was eventually vented through a small air hole located in one of the walls so
that bathers could at last enter the sauna and begin soaking up the benefits.
Improvements to the Sauna Heater
Over time, sauna heaters evolved and improved as technology changed. The
open wood fire eventually gave way to metal woodstoves that used a chimney to
vent smoke to the outside. This type of heater still took a great deal of time
to properly heat a room, though, so the sauna did not truly surge in popularity
until the advent of electric sauna heaters in the 1950's.
For the first time, saunas could be quickly and easily heated using the
convenience of electricity instead of the traditional wood fire. This
improvement made it easier to own and enjoy a sauna, helping to spread it even
further into the mainstream of other cultures.
Today's Sauna Heaters
Today there is a wide range of sauna heaters available, including electric, gas,
traditional wood-fired and infrared. These heaters offer unprecedented choice
and convenience for sauna enthusiasts, making it easy to put a sauna just about
anywhere you want one. Modern heaters also make it possible to enjoy your choice
of a wet sauna, a dry sauna, a steam sauna, a sauna using infrared heating
elements or a combination of these choices.
Sauna heaters still use stones to heat the sauna room, but they can be quite
sophisticated in how they heat the sauna, regulate the temperature of the air
and the stones, and use energy as efficiently as possible. They transfer heat to
your body by using a combination of radiant heat, heat conductive materials and
air convection to circulate both heat and moisture.
Basic Heaters
The most basis sauna heaters can be wall mounted or floor mounted. In the case
of a wall mounted electric heater, the thermostat is usually located toward the bottom of
the heater itself so it does not measure air temperature within the sauna with a
great deal of accuracy. A floor mounted heater is a bit more accurate since the
heater is located on the floor of the sauna and the thermostat is located on a
wall about one foot (30 cm) from the ceiling.
While basic heaters bring a sauna up to temperature fairly quickly, they
struggle a bit to keep the air and the stones at the correct temperature in some
circumstances. For instance, if the room is left unoccupied for an extended
length of time the air might stay hot but the stones themselves may cool down
enough to where they can't provide enough steam for the room. Other problems
with maintaining proper heating can occur if the room suddenly fills with a
large number of bathers after being left empty for a long time, or if traffic in
and out of the sauna is so frequent that the heater has trouble keeping the room
up to temperature.
Advanced Heaters
More advanced sauna heaters have multiple phases of heating control to
better control the sauna temperature. Some have two sets of heating elements,
one of which stays on continuously and the other of which kicks on when extra
heat is needed. Other heaters have separate temperature controls for the stones
and the air within the sauna, so that both stay heated properly. There are even
heaters that have special lids and fans to help adjust and control heating for a
variety of common usage situations.
Infrared heaters have gained popularity in the last decade or so as they provide
a different type of sauna experience that many people prefer. Infrared heating
radiates warmth directly to your skin, much like the sun does but without the
sun's harmful ultraviolet rays. Infrared heat penetrates beneath the skin up to
one to two inches, which can be particularly enjoyable and helpful to arthritis
sufferers and others with joint and muscle pain.
Many sauna traditionalists discount the use of infrared heaters as not fully
providing a true sauna experience, but other sauna lovers find infrared to be
just as or even more beneficial than a traditional set-up. The best way to find
out which type of heater you prefer is to use both kinds, several times if
possible. This will help you decide which experience you prefer so that when you
go to install your own sauna you can select the heating unit that will best meet
your needs.
About the Author
Julie-Ann Amos is a freelance writer for Home-Saunas-N-Kits.com, a consumer
guide providing information on
how to
build a sauna. She enjoys the health benefits of
home saunas and has helped
friends build their own using
precut sauna
kits.
Copyright 2005 Home Saunas 'N Kits.com
Permission is granted to publish this article on your site if the author's
byline is included and all 3 links are hyperlinked.
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| Some other articles by Julie-Ann Amos | Infrared Saunas - History, Health Benefits and Technology
Infrared saunas are a revolutionary step in sauna technology, and one that can
generate strong opinions among sauna enthusiasts. Because infrared saunas use
different technology, different materials, and create an experience that is
slightly ...
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