Installed a complete AC system replacement today. The old 3-ton unit had a failed compressor and dated components. We removed the condenser, coil, and thermostat, and replaced them with high-efficiency equipment. Brazed all lines, pulled vacuum, and pressure-tested before charging the system. Set the new Wi-Fi thermostat and walked the homeowner through setup. Verified proper airflow, subcooling, and temperature split. Also sealed a small gap in the return plenum. The customer now has reliable, energy-efficient cooling that meets current SEER2 standards. Registered warranty and left documentation in the panel. Great install, and a very satisfied homeowner.