Heating HVAC maintenance Performed one time tune-up on 1 system (zoned U/S & D/S). Client reported hot/cold spots, checked ductwork and found all connections are “Y†connections, unable to add dampers to better control airflow. Noticed a couple areas of concern such as blower assembly is holding dust which reduces efficiency and longevity of motor as well as missing in-line float switch for water damage prevention. Client is using fiberglass filtration which only catches large particles, recommend using pleated filtration for future use. (20x25x1)