|
Ray, I would suggest you use some kind of screen material with small holes that are small enough to keep the critters out but don't impede airflow. When your furnace runs it also pumps air (2 inch duct) into the belly to keep your tanks and water lines from freezing. When air is pumped out, air must exit somewhere or you impede the flow of warm air into the belly. If you fully seal all those holes, there is nowhere for the air to exit. If you never are in freezing weather then it's probably not a big deal. But for us, it is. I have not covered ours but I think it's a good idea to do so. But I'll use a fine screen material when I do. Just a few thoughts.
|