-not a recall/call-back Found the system operating with in its specifications. Found the issue relate to this call is inefficient insulated hard pipe ductwork. The pre existing ducting insulation under efficient for the high efficiency system. Condensation was observed from one 12” duct on the front top left corner of the supply plenum. Other sections were subtle moist and cool to the touch. Inspected the ducting system and found throughout it should be considered for replacement duct to age, outdated R- values of the insulation. Entire duct system replacement option was discussed, but declined at this time. Addressing replacement of the single 12” duct at a later date, per customer’s request.