I have had a UGPK 2 stage Silhouette RUUD furnace installed a few months ago. I am having a very difficult time getting use to the high pitch ring that it has when it is running. Is this normal for a furnace to have a high pitch ring???? It is driving me crazy! Can it be fixed. One suggestion I was given was to enclose the furnace to buffer the ring. I would rather get rid of the ring than buffer it. Any suggestions for me?