My fiancé and I are about to close on a new ranch home, there is a room located on the first floor next to the master bedroom in what I would say the center of the house for the washer and dyer. The problem is the lack of a dryer vent to the outside of the house. This is where my question lies, what are our options of finding the best direction to vent? (i/e...through the roof, underneath the first floor) How long can a dryer vent be?