"james" wrote in message ...
I'm using a $20 household fan 24/7 to ventilate a damp crawl space by
sealing it against one of the crawl space vent (i.e. becomes an exhaust
fan).

Eventually this fan is going to fail, perhaps the bearings wear out and
then the fan stop spinning.

Should I worry about a fire, or do all UL listed fan have some sort of
overheat protection?

Is there some sort of fan that is designed to run 24/7 and is well
protected against overheating?


*You need a fan that is rated for damp or wet environments and is also rated
for continuous duty. The inline fans from Fantech have both of these
ratings. As RBM suggested you can check Grainger for a variety of choices.
You could also take a look at McMaster-Carr's website. They may have
something suitable.

You are using a portable temporary fan as a permanent installation. There
is definite cause for concern over the long term.