Responded to customer concern regarding newly installed Lennox heat pump system operating in cooling mode when set to heat. Confirmed system was functioning as designed for a heat pump, which reverses refrigerant flow during heating operation. Verified proper airflow temperatures of approximately 100°F at registers during heat pump operation. Performed comprehensive inspection of both heat pump and gas furnace components, confirming all systems operating within specifications. Educated homeowner on proper heat pump operation, system behavior during different modes, and thermostat usage.