Wrappping up a comprehensive diagnosis on HVAC system. Replaced failed blower motor and capacitor. Cleaned evaporator and condenser coils using foaming coil cleaner. Checked refrigerant charge, added R-410A as needed per superheat/subcooling readings. Calibrated thermostat. Inspected ductwork, sealed leaks with mastic sealant. Tested all operational modes. System restored to peak efficiency.