Both indoor and outdoor units.

1. Tighten Electrical connections
2. Check the Refrigerant level (Add only after consulting with the customer)
3. Checking for any leaks
4. Vacuum dust from inside the unit
5. Lubricating moving parts
6. Flush and clean drain line & Trap
7. Testing the Thermostat
8. Temperature Differential Test
9. Checking Compressor’s amp
10. Checking motor’s amp
11. Inspect filter
12. Check contactors and relays
13. Inspect pressure and Temprature
14. Inspect safety devices and controls
15. Test Emergency shut offs
16. Inspect ductwork
17. Inspect Heat exchanger for leaks or cracks