Anyone figured out how to keep the space heater fan motors working? In my experience, they get annoyingly noisey and sometimes even die long before the heating element burns out. I've tried oiling them every year but it doesn't seem to matter - I suspect the bearings are sealed. Besides, some require major disassembly of the heater housing to get at. My nice Holmes heater started getting noisey a week or so. I'll get tired of listening to it and replace it soon.
Suggestions?
TIA