Home was built in may of this year. Tech found system is operating properly and dampers are operating properly. Tech found no issues with system performance. Customer stated 1 room stays cooler than the rest of the house. Tech explained that manual dampers would have to be installed in order to balance airflow. Customer also stated installer repaired a duct that had a hole, tech verified the duct was replaced. Customer also complained of air handler noise and tech explained it is typical for a zone system to be noisy if only the small zone is calling because it is trying to move all airflow through a small portion of the ducts. Tech gave a quote to install dampers and balance ductwork. System is still under contract and builders warranties.