My main concern is that the plenum (the large metal box on top of the furnace, right?) was made out of sheet metal by the company that installed the furnace and was then covered with fiberglass insulation. The furnace sits in our utility room, right next to our clothes dryer and shelves of food we store. The fiberglass insulation was not covered with vinyl, in fact, the installer cut a big slit in the plenum and put in a filter that he had to roll up a bit on one end since "they didn't make the right size."

I have searched all over the internet and have yet to see a picture of a plenum that is home-made like this (as opposed to manufactured by the same co. as the furnace). I have also never seen a plenum covered in exposed fiberglass insulation.

From what I can tell, the opening he cut for the filter will allow fiberglass particles to be introduced into the whoe duct system (and hence, the rest of the house).

Am I paranoid? Is this standard installation protocall or am I being ripped off? Help anyone?

Thank you !!!!

Sarah