Re: Old Carrier furnace and heat-exchanger
'owdy,
I belong to a little brick bungalow in the US midwest. Back in '84, I had new heat/AC equip. installed.
The furnace, a middle-of-the-line Carrier (but made by Bryant) is a standard forced-air-system unit, maybe 120k btu, with an elec. vent damper. Has given good service, 'tho I had to intall a new gas valve in the 90's.
Every late summer I clean the rust out of it. And I -try- to get a peek at the heat-exchanger with one of those little hinged mirrors like the dentist uses. Can actually see very little.
About how long might such a furnace last with average (midwest) usage?
The part that usually fails in late life is indeed the heat-exchanger? How can I tell when its failing? I assume I'd need to replace the unit and budgeting could be b-b-bitch.
Thanks, Puddin'