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.