TLDR. Furnace failing, need another one ASAP. Ductwork revision likely needed.
Quick background as there are a ton of knowledgeable people here:
Furnace is 2006 125K BTU Concord 90% with ABS combustion air pipes and a single side return air inlet. Outlet air temp when firing is ~175 F. House was new build at that time. Easy access to ABS for replacement with 336. Obviously terrible access to the majority of the ductwork throughout the house.
Main circulation fan motor let the smoke out in August. Replaced. It was a pain in the ass to get the part without a licence (and expensive, >$600 for OEM, best I could find on aftermarket was 350).
Now main blower wheel came loose between center hub and blades a few nights ago. That makes a great noise. Epoxied the blades back to the hub as a temporary fix, but frig knows how long that will last. Guy I bought the motor off is trying to source a wheel, but I am not excited about throwing another few hundred into this thing (my guess at price).
Called a gas fitter that I was referred to and he won't touch it as when furnace goes over 100K BTU you need two return ducts connected and he isn't a tin-knocker/duct-designer and he doesn't know a good one. He thinks (and I agree) that the air circulation is probably low and we need to free it up a bit.
So for now, I am running the epoxy fan a few hours a day to keep the house >65 when my wife is home until I can get this resolved. She is not very happy with the situation.
Quick background as there are a ton of knowledgeable people here:
Furnace is 2006 125K BTU Concord 90% with ABS combustion air pipes and a single side return air inlet. Outlet air temp when firing is ~175 F. House was new build at that time. Easy access to ABS for replacement with 336. Obviously terrible access to the majority of the ductwork throughout the house.
Main circulation fan motor let the smoke out in August. Replaced. It was a pain in the ass to get the part without a licence (and expensive, >$600 for OEM, best I could find on aftermarket was 350).
Now main blower wheel came loose between center hub and blades a few nights ago. That makes a great noise. Epoxied the blades back to the hub as a temporary fix, but frig knows how long that will last. Guy I bought the motor off is trying to source a wheel, but I am not excited about throwing another few hundred into this thing (my guess at price).
Called a gas fitter that I was referred to and he won't touch it as when furnace goes over 100K BTU you need two return ducts connected and he isn't a tin-knocker/duct-designer and he doesn't know a good one. He thinks (and I agree) that the air circulation is probably low and we need to free it up a bit.
So for now, I am running the epoxy fan a few hours a day to keep the house >65 when my wife is home until I can get this resolved. She is not very happy with the situation.
