What is the correct placement of a 2nd story through-wall bathroom vent
I would be using position 3 as position 5 is close to the window being that high up it will not be a problem for the condenser and compressor unit for your AC / heat pump I would agree the other 3 positions 2 at the vent would allow the moisture to be sucked into the attic space and the one over the window is two close as #5 is to 2 windows so I would say #3 is the best option.