Bought a house last June, a two-story brick colonial with a gas furnace and AC.
The supply in the master bedroom on the second floor is really weak.
Had a guy come out from a furnace/AC place I've been happy with so far. He said the only way to really find the problem directly would be to start ripping up walls, which isn't worth the expense.
Does anyone in the home HVAC industry ever use a fiberscope/borescope for this kind of thing? (To inspect the ductwork for obstructions.)
TIA,
S