Performed AC repair on a Bryant Evolution Series 189BNV unit in East Brunswick, NJ. Diagnosed the issue as a failing contactor and a refrigerant leak in the condenser coil. Replaced the contactor to restore proper electrical function and sealed the leak. Recharged the system with R-410A refrigerant to optimal levels. Cleaned both the evaporator and condenser coils to improve efficiency. Checked and adjusted system pressures for accurate superheat and subcooling values. Ensured all electrical connections were secure and calibrated the thermostat for precise temperature control. The unit is now operating efficiently, providing reliable cooling for the homeowner.