Unbalanced temperatures on supply vents to kitchen , entrance and living room areas. I have recommended a full evaluation of ductwork. Existing insulation is spotty/ lower and higher in some places more than others. Existing ductwork have fans built in line to drag air across to main home areas. 2 kitchen vents are supplied by master bedroom unit. Others in that area are supplied by main home unit. The fan in line energizes with the main home unit when it should energize with the master bedroom unit. This causes the vents to have different temperature air supplied.
