I live in the Chicago area and have a Trane XV80 Furnace that was installed about 3 years ago. This Winter I heard ice chunks clinking down the chimney and it appears that the ice came all the way down to the furnace where the chimney pipe connects. I have a metal chimney that has a plentiful amount of louvres in the cap of the chimney itself. I never had any chimney ice problems before I had this XV80 installed and I am wondering if this furnace needs to be vented out the side of the house and not up the chimney? I am having a roofer come over thru insurance since I also had some ceiling water mark damage in the area that is right next to the chimney. Maybe there are too many vent openings in my chimney cap and that is creating a moisture problem? My insurance said we may also have to involve the HVAC person that installed the unit depending on whe is found. The metal chimney is about 6 years old now and my previous furnace was a Lennox Pulse that was vented out the side of the house and only the water heater was being vented up the chimney flue. Anyone else have an icing problem with their Trane XV80 using a metal chimney?
Thanks in advance for any input to this problem. Lou