1. Visually inspected condenser coil for debris/ dirty. 2. Inspected condenser fan motor. 3. Inspected condenser fan blades. 4. Inspected/ cleaned wiring connections. Found concerning burn marks on the older downstairs unit’s disconnect wires as well as melted plastic in the disconnect. 5. Tested compressor/ condenser fan motor capacitor. Compressor capacitor is testing just blow range but amps are within range on the older downstairs unit 6. Checked compressor amp draw. 7. Checked condenser fan motor amp draw. 8. Inspected / replaced return filter. 9. Inspected return plenum for debris/ dirty. Returns are accumulating a good amount of dust 10. Inspected evaporator coil. 11. Inspected blower motor/ blower wheel. 12. Checked blower amp draw. 13. Measured temperature differential from supply to return. 20 degrees measured. 14. Inspected drain lines 15. Washed condenser unit to promote heat exchange Also noticed the older unit was missing insulation on the suction line. this will reduc