Responded to airflow concerns where certain vents had reduced heat output in a one-year-old furnace system. Diagnostic testing confirmed adequate furnace performance (118°F output) and proper airflow through all vents. Determined the issue was due to heat loss in ductwork running through uninsulated exterior wall sections. Adjusted fan speed as troubleshooting measure, then reverted to original settings when improvement wasn't observed. Recommended additional insulation around affected ductwork to resolve temperature inconsistencies.
