What are the common signs of a malfunctioning home AC evaporator and how can it be repaired or replaced?

Common signs of a malfunctioning home AC evaporator include reduced cooling efficiency, strange noises, and ice buildup on the evaporator coils. To repair or replace a malfunctioning evaporator, it is recommended to contact a professional HVAC technician who can diagnose the issue and perform the necessary repairs or replacement.