Furnace noise
Furnace has gotten louder - hard to describe but like something is loose and vibrating when fan motor is running. I took the outside cover off and didn't' see anything obvious - the fan doesn't appea...
Forum Discussion
Ours has started that also, sounds like the fan is loose/wobbly until it gets going faster, then the noise stops like centrifical force corrects the wobble. We cannot find anything to tighten and all seems fine when checked. Another forum indicated that the fan motor may be going out when this happens. I guess eventually we will find out. Ours is in a 13 year old coach, not sure how much it was used the first 10 years, but we have used it quite a bit in the 3 years we have had it.
