The heating source in this fan is a high-power resistor element.
Thanks to the fan, good air circulation is obtained, while at the same time high upward dispersal is achieved. The fan is therefore appropriate for installation in enclosures outdoors to maintain an even temperature and thus avoid condensation, but it can also be used to assure that the temperature is kept above the lowest permitted level.
The fan can even be run separately to increase the air circulation during the summer, for example.
