Performed a 3 system spring maintenance ( heat pump). Tasks performed. 1. Visually inspected condenser coil for debris/ dirty. 2. Inspected condenser fan motor. 3. Inspected condenser fan blades. 4. Inspected/ cleaned wiring connections. 5. Tested compressor/ condenser fan motor capacitor. 6. Checked refrigerant pressures. 7. Checked compressor amp draw. 8. Checked condenser fan motor amp draw. 9. Inspected / replaced return filter. 10. Inspected return plenum for debris/ dirty. 11. Inspected evaporator coil. 12. Inspected blower motor/ blower wheel,,,north/ south side of the house units are very dusty recommended a blower cleaning,,,there’s an older unit that cools/ heats the upstairs,, it’s not working properly , homeowner is aware and he’s ok with it not working properly,, he said he never uses it. 13. Checked blower amp draw. 14. Measured temperature differential . 15. Inspected drain lines. 16. Washed condenser unit.