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?