Heat Pump System Installation: Dispatched for full heat pump system installation to replace existing HVAC equipment. Removed old components and prepared line set, electrical, and duct connections. Installed new outdoor heat pump and matching indoor air handler, connected refrigerant lines, electrical wiring, and condensate drain. Evacuated system to proper vacuum, charged refrigerant to manufacturer specifications, and programmed thermostat for heat pump operation. Verified airflow, temperature split, defrost cycle, and system performance in both heating and cooling modes.