AC System Replacement: Dispatched for aging air conditioning system with frequent breakdowns and poor cooling performance. Verified existing unit was undersized and operating inefficiently. Removed old condenser, air handler, and refrigerant lines. Installed new properly sized high-efficiency AC system, connected new line set, evacuated system to proper vacuum, and charged with refrigerant to manufacturer specifications. Tested airflow, electrical components, and thermostat operation, and confirmed consistent cooling and proper temperature split throughout the home.