On Thu, 02 Dec 2010 21:01:24 -0500, Home Guy wrote:

Kyle wrote:

System info:
15 year old Trane gas furnace
blew the motherboard on the furnace
We've since had two HVAC people out to service the furnace
and fix the motherboard problems.

My 34 year old furnace (lennox g8-120-1, manufactured October 1976) is
still working fine. It was original with the house. I really haven't
done any maintainence on it in the 10 years I've owned it.

It doesn't have a motherboard, or electronic ignition, or electronic
motor, or any ****ING electronic sensors.

Just thought I'd say that.

Enjoy your POS furnace. You and everyone else that has a motherboard in
their furnace.
You still have that troublesome thermocouple, and a stack control,
and a high limit switch - all of which can and do occaisionally fail.
And you still have ONE heat exchanger that can crack or corrode, so
you are not out of the woods yet.

Mine was still good at 35 years - a few parts replaced, and I always
had a spare thermocouple hanging on a nail beside the furnace, as well
as a spare blower belt.

Replaced it about 7 years or so ago - figured I'd do it on MY time,
not when the furnace felt like it.

Opted for non-condensing figuring I had a better chance of it
outlasting me than if I had gotten the condensing version.