We installed an evaporative airconditioner in a two storey home, we required a Cherry Picker to lift the airconditioner up as it was a “hard to access area”.  The installer worked from a working platform of the Cherry Picker to install the dropper and airconditioner and while the Cherry Picker was there the Electrician used it also.

Because of limited roof space for the ducting we located the vents above the stairwell so the cold air could flow through to the bottom level.