Our team recently performed a comprehensive maintenance service on an 18-year-old Carrier split system. We began by inspecting all components, including the compressor, condenser, and evaporator coils. We cleaned the coils and checked for any signs of wear or damage. Next, we tested the system's electrical connections and refrigerant levels, ensuring everything was functioning optimally. We also checked the thermostat and controls for proper operation. Finally, we performed a thorough cleaning of the air filters and vents to enhance air quality. The system is now running efficiently, and we provided the homeowner with tips for future maintenance.