Brennan G Today I visited to investigate why some of the rooms upstairs are unbalanced and the system seems to be running longer than usual. I determined that this system is configured and operating normally and without major renovations there isn’t anything we could do to make the upstairs more balanced. I suggested leaving the duct system as it is , for this system is operating optimally. I verified both zone damper and the bypass damper are functioning properly. The system is running more due to the summer heat , I was unable to locate any issues with this systems set up.