Some things that should be checked in annual AC maintenance include: -Checking the filters and changing them if necessary -Cleaning the coils -Inspection of drainage pipes and condensation lines -Checking for any damage or obstructions to the unit -Lubricating moving parts where necessary -Testing the thermostat to make sure it's working properly
An annual AC maintenance checkup should include the following: Checking the refrigerant level and adding more if needed Checking the electrical wiring and components for damage or wear Cleaning the condenser coil and evaporator coil Inspecting the ductwork for leaks or damage Lubricating all moving parts of the AC unit Checking to make sure that all switches and controls are working properly