Originally Posted by Cornerguy1
Your problem likely stems from a summer's accumulation of dust in your duct work.
Why not call your furnace company and arrange for a duct cleaning and inspection of the furnace? Clean ducts and a new filter will improve your furnace's effeciency over the upcoming heating season.
Originally Posted by m00se
Sounds like you had a lot of dust in the ducts near the furnace. Has there been construction in your area since last winter?
Thank you both for confirming my thoughts ! I am pretty much sure that is exactly what is going on.
It did "smell" like the first heat of the winter, but I didn't think the detectors would pick it up because it wasn't smoky.
I will have someone come clean my unit, it's probably that time anyways.
Thanks Again !