The Hendersons had been struggling with an aging 18-year-old split system that was failing to keep up with California's summer heat. We performed a complete system removal and installed a high-efficiency Carrier Infinity 26 heat pump paired with a variable-speed air handler. Ductwork in the attic was resealed and insulated to current standards, and we balanced airflow across all six zones. The result is a quieter, more consistent indoor environment with an expected 38% reduction in annual energy costs.