 | Clean and adjust burner assembly |
 | Clean ignition assembly |
 | Clean heat exchanger or elements |
 | Monitor flue draft |
 | Monitor refrigerant pressure |
 | Test starting capabilities |
 | Test safety controls |
 | Clean or replace air filters |
 | Clean and adjust blower components |
 | Check air flow |
 | Inspect ductwork |
 | Tighten electrical connections |
 | Measure volts / amps |
 | Lubricate all moving parts |
 | Adjust thermostat calibration |
 | Clean evaporator coil if accessible |
 | Clean condenser coil |
 | Clean condensate drains |
 | Measure temperature difference |
 | Apply protective coating to outside unit |