Completed a full HVAC upgrade for a homeowner in Doylestown, PA 18901. Installed a Lennox single-stage air handler with constant torque motor and a Lennox 14 SEER single-stage outdoor heat pump, paired with a 10 kW auxiliary heat package for improved winter performance. Removed the old zone damper, sealed ductwork for better airflow, and added an Ecobee Smart WiFi thermostat, new pad, whip, and safety disconnect. Finished with a condensation line blockage detection system, accessible filter grilles, and a thorough job site cleanup. Another efficient Lennox heat pump system ready to keep this home comfortable year-round.