[rob9212]

I am having a problem with air flow to my bedroom on the 3rd floor,however my sons bedroom is next to mine and air is released in his room, my unit is in the basement and I was told to look for dampers that control the flow of air and I can't find any,I dont think this unit is equipped with dampers or valves as someone else described them, so now I sweat in the summertime and freeze in the winter time,I have been in this house since july of 2002 please help or suggest something.
thank you