I apparently have a cracked Heat exchanger. I was having trouble with the pilot, and the fine HVAC professional showed me that it was getting blown around when the blower came on. He says -- new furnace, and it seemed the right thing. After a little searching on this site, I'm even more convinced.
He uses Heil, and I'd just like to know that it's a reasonable brand. My current one is Janitrol, and I've done enough research to believe that it's probably not a great brand.
All comments will be gratly appreciated.