Aircon chemical overhaul is a comprehensive cleaning process that involves dismantling and thoroughly cleaning all the internal parts of an air conditioning system using specialized chemicals. This process is necessary when regular maintenance and chemical washes are not enough to restore the system's performance.

During an aircon chemical overhaul, a professional technician will dismantle the air conditioning unit and clean every component, including the evaporator and condenser coils, blower fan, and drainage system. They will also check for any signs of wear and tear and replace any faulty parts.