There are basically three factors, which differentiate infrared saunas from each other: Construction Materials, Element Type and Control.
CONSTRUCTION MATERIALS:
Because of heat and humidity, traditional saunas must use a durable softwood and cedar is the material of choice. While there is no humidity in infrared saunas, there is heat and we believe that cedar is still the best option. There are infrareds constructed of hemlock, fir, poplar and birch. These materials are far less costly and much less durable.
Some suggest that cedar is not healthy. This is another of those unfortunate misstatements designed to unfairly knock the competition. Cedar has been used for hundreds of years in the construction of saunas as well as for decks, fences and in homes. It is an effective, attractive and aromatic product that many associate with saunas.
Those who criticize cedar fail to tell you that the only ill effects from cedar come from its dust – that is, to a few workers in the lumber industry who cut and process the timbers. Of course, this applies to virtually every other wood or industrial product. There are no health issues resulting from the use of cedar for saunas.
ELEMENT (EMITTER) TYPE
Most elements are either ceramic or incoloy. Both types will effectively heat the sauna, but only ceramic emitters will produce infrared rays in the desirable Far Infrared range (5.6-15 microns).
If you select a sauna only for the heat, either is acceptable. However, if you are seeking the benefits purported to come from infrared rays, then you should select a sauna using only ceramic emitters. Furthermore, those emitters should be “solid ceramic”. A tubular ceramic emitter is not a true ceramic element. It is merely coated in a a ceramic layer.
CONTROL
Most infrared saunas utilize a thermostatic control to limit temperature. Others market what they refer to as “constant heat”. They claim that because the elements never turn off, you are continually exposed to infrared rays. The theory is interesting, but flawed. It relies solely on the notion of infrared therapy (exposure to infrared rays), while ignoring the capacity to produce a “good sweat”.
Typically, these saunas are “underpowered”. Often, even the largest models plug in to a standard outlet. While this may appear to be an attractive feature, these saunas are not efficient. Because these saunas have no temperature control at all, they must under power the heaters to prevent any possible chance of overheating. Infrared rays have a range of about 2 feet. To work properly it is important to have enough properly sized emitters located behind and in front of each user. Five or six emitters is acceptable for a 2 person sauna, but a three to four person model should have 8 to 9 infrared emitters.
For more information, visit saunafin.com.