For outdoor components:
Coil and cabinet are inspected and cleaned
Drain pans and condensate lines are cleared of obstructions
Compressor is inspected
Fan motor and blades are inspected and lubricated
Control box, switches, wiring, and safety controls are inspected
Refrigerant level is measured and recharged if necessary
For indoor components:
Blower assembly is checked and cleaned
Belts are lubricated or replaced
Combustion blower housing is cleaned
Evaporator coil, drip pan, and condensate lines are cleaned and cleared
Burner assembly is inspected and cleaned
Ignition system is cleaned
Safety controls are tested
Heat exchanger is inspected
Flue system is checked for dislocations and wear
Control box, wiring, and connections are checked and tightened
Air filter is replaced or cleaned
Duct system is checked
