Upon arrival tech found system heating properly yet indoor temp of laundry room and service hall is at 58 degrees. Tech inspected duct system in attic and found a 12” flex run coming off of trunk line mounted on top almost completely restricted for one of the laundry room vents. Tech also felt cold air coming from behind dryers, maintenance needs to take care of this issue. Lots of cold unconditioned air entering laundry room. Service hall vent has a long flex run coming off of system towards front of building hardly putting out any airflow. Highly recommend getting a quote on adding this run off of system number 7 or possibly a new duct system due to poor duct design. Will need a field supervisor if either quote is requested. Also recommend moving thermostat from inside laundry room into service hall as laundry room door is always closed blocked from hallway. $1,221.36 to repair restricted 12” flex going to laundry room vent. Dryer issue will need to be fixed before any noticeable com