it is unreal what you run into is it not???
I try to run AWAY!!
I'n not an HVAC guy but I have a question:
What exactly is that GREY PIPE COLUMN to the right of the furnace in that first picture holding up?
I've never seen lally columns (sp) sitting on 2 x 4's on TOP of a concrete floor before. Note how they neatly supported that last inch of the bottom plate with the adjacent scrap of 2 x 4.
that pole probably holds up the truss they cut for the vent
I guess their salesmen don't measure up the jobs when they sell them.