New Filter 20x20 install new coffin box on NewStan new air handler on new coffin box 4 piece coffin box to return four piece unit to supply flush copper line set flush drain line hook up copper high-voltage new on air handler high-voltage new on condenser wired come out to run new circuit with no ground before and new pull out disconnect on roof. New pad new condenser on rooftop tiedown four corners hook up copper high-voltage low-voltage nitrogen test 400 psi vacuum down to 500 µm start up everything run into factory specs 22°. Split cooling to factory specs job is complete and collected. Customer is happy.