Here's my opinion.

It's about done for. Replace the entire furnace. The money you save in
utility bills will probably pay for the new furnace in 10 years


"Puddin' Man" wrote in message
...
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'
--
************************************************** ****
*** Puddin' Man PuddingDotMan at GmailDotCom ***
************************************************** ****;