I still have old Weatherkings 30 years old running. Efficiency, Oh well Reliability . Liked the RCU unit with the suction accumulator.
Answer to A, B, C, does it have anything to do with a bathroom. I know 30 years go ahead and say it.
That RCU was a nice looking unit for it's time.
All the units I installed look as good as the day they were installed.
Had HPCO and LPCO, accumulator, hi staring torque comp with a start ca[ and potential relay.
Still got sales literature on it. Damn thing never broke down.