When we bought the house, we knew the furnace was older, and would likely be replaced on our dime. We bought the extended home warranty, and hoped it would happen during that time. Of course not. Sunday, January 30th, 2011, around 3:00 PM, the furnace quit pumping warm air.
It could be several things, and it should be no surprise that we weren't able to figure out the problem, even though we opened the furnace, poked some things, looked around and made a bunch of sounds like "hmm" and said things like "okay, so that goes there."
Looks like it's time to start thinking of how this will work into our eventual basement finishing project. Ugh.
Cutting edge technology, circa 1987:
The question remains: repair, or replace?