The Residential Air Conditioning Maintenance & Efficiency Service Checklist  consists of over 59 individual operations and features of your air conditioning system. Listed here are the first 25.

2. Check the thermostat for proper operation

3. Check condensation drain line assembly & pump

4. Check the indoor fan/blower assembly

5. Inspect the indoor fan motor-electrical connections, components and amperage

6. Inspect air duct distribution system condition for damage/air leaks (visual, if accessible)

7. Test and measure system for proper airflow as per design requirements

8. Test and record for correct equipment cooling temperatures

9. Test for correct air duct distribution system efficiency –Temperature Profile (Score)

10. Measure the system’s Total Static Pressure (Score)

11. Check and tighten the electrical wiring connections in the outdoor unit (24v/230v)

12. Check the outdoor motor fan assembly (shaft & blade)

13. Wash the outdoor condenser coil for best efficiency

14. Check/measure outdoor fan motor for proper electrical operation

15. Test for correct refrigerant charge (superheat/sub-cooling method)

16. Check compressor electrical terminal connections (if accessible)

17. Check 230 volt electrical safety shut off disconnect switch/fuses

18. Test for proper compressor and compressor starting component operations

19. Check compressor crankcase heater

20. Inspect 230 volt air conditioning circuit breaker

21. Check refrigeration line set insulation condition/damage

22. Check for 24 volt circuit overload protection

23. Measure for proper line voltages at outdoor unit and shutoff

24. Check 24 volt condenser electrical control wiring