Does a freon line run inside the wall from the outside unit to the attic units?
A cold spot in the wall is near the ductwork but no cold spot showed on the ceiling where the ductwork is.
Would it be from a freon line that isn’t wrapped properly? In that case, what would one need to have done?
Or, is the metal ductwork the problem - but I can’t see any break in it when I take the vent cover off the ceiling mount and use a mirror to see into the ductwork?