General note: To all of the people in this thread who suggested that I
buy a new furnace, thank you but that wasn't the question I asked. I'm
a big boy and can make my own decisions as to how to spend my money.
What I really wanted was a suggestion as to a website (or name) of a
company selling rebuilt electric motors or replacement gas conversion
units or an explanation of why a 24 inch blast tube can't be
fabricated or even what the hell a blast tube is or even the names of
these things (for searching) or a reference to a DIY website
explaining the how and why (like RepairClinic.com for appliances). It
appears that you're all just consumer lemmings when it comes to this
sort of problem.

In the past 20+ years I've become a plumber, electrician, carpenter,
welder, concrete and brick layer, tiler, flooring installer, etc. due
to overly-expensive contractors. I guess it's about time to become a
furnace repair person sigh.



If you can remove the motor, take it to your local electric motor
repair/rewind shop and they will likely be able to repair it. It may just
need new brushes or bearings.