Performed precision AC tune up on both systems. Checked operating refrigerant pressures to ensure peak performance and efficiency. Tested power distribution system and corresponding starting components. Verified proper amp draw; optimal. Checked temperature differential across indoor coil to verify within target range. Used alkaline treatment to reduce bacterial growth within primary drain lines. Washed outdoor coils thoroughly to maintain heat rejection. Replaced existing media filter with provided filter. All checks are good at this time. Both systems are currently operating within desirable specifications