Came out to call for master bedroom having a pretty significant temperature difference. When it’s cold outside, customer stated that the room can be 6 degrees different from the rest of the home. Told customer that I would do a complimentary air balancing on the system and see if we can get it more comfortable. 2-15-2022 Isaac J. Came back out to do an air balancing. I added 3) 10†dampers, 1) 8†damper, and 1) 6†damper to the supply plenum. After the installation of the dampers, I went to each area of the home and checked airflow and adjust rooms according to customers use. After completing the air balance on the system. Customer could notice a significant difference in how the room felt to them. Told customer to have the system run like this till the next visit and if we need to do any more adjustments, we can do them at that time.