Replaced an outdated heat pump for a homeowner in Pleasant Hill, CA, upgrading to a high-efficiency model. The old system struggled with frequent breakdowns and high energy bills. Installed the new unit, optimized the refrigerant charge, and tested the system for proper heating and cooling performance. Calibrated the thermostat and ensured seamless integration with existing ductwork. The new heat pump delivers reliable comfort, improved efficiency, and lower operating costs year-round.