Quote Originally Posted by Riverbug View Post
I don't think the flexible vent hose they use helps the situation much. That's why many codes don't allow homes to have a flexible dryer vent hose - too restrictive. The smooth metal ducts would probably help a lot, but not sure with the small size and distance between furnace and bedroom; certainly wouldn't hurt.

I agree, the dryer hose is the worst solution for a low cross section and that length. Back when I did my mods, I looked into other options, but it's hard to find something that would fit between the tanks and the frame rail (which is the limiting factor and the reason, GR went with only 2"...). Anyone know specific hoses in that size that are smoother or better suited?

But got motivated now again and will maybe get the trailer to the house again on one of the upcoming weekends and drop the underbelly on the drivers side to see if I can rig up something with the 4" hose that goes into the underbelly for keeping the tanks from freezing.