We recently had a new furnace installed and it is a multiposition style. there are some uncovered holes on the side of the furnace that aren't in use. These are pretty good sized holes. One is where the stovepipe would go if it was on that side. Is this normal, or should there be coverings placed over these openings to prevent insects etc from getting in?
Last edited by MistyLee; 11-09-2009 at 01:38 PM.