Performed preventative maintenance on AC system. Replaced MERV 11 16x25x5 air filter. Checked evaporator coil pan and condensate pump for proper drainage. Temperature split is at 15° with a supply air temperature of 55°. This unit has the proper refrigerant charge. Compressor-9.5 RLA Condenser fan motor-0.5 FLA. Both of these readings are within the amperage rating for this unit. System is operating properly at this time and is ready for the summer season. *Ductwork is ran poorly, noted to customer that this is why the upstairs furthest from the AC system doesn’t cool as efficiently. Opened feeds and removed window unit to help second floor cool down to proper temperature.