I have my air handler installed in my attic, my HVAC guy will be here next week to braze and do a nitrogen check and charge & set up the system, I am running the copper lines up in the attic to the air handler, is there a preference on routing the lines, I have the air handler on 2x4 on jack raising it up 3 1/2" plus the drain pan so I have good drain pitch, I have my choice going under the air handler to get to the lines on the air handler or come over the top and down. any preferences.
Chet