[DutchmenSport]

Agree with Daryles above about closing up all the holes and gaps in the underbelly and elsewhere.

After a couple years of ownership, I finally opened the back wall of my basement and I was shocked at all the light I could see coming through.... everywhere.

I ended up using over 20 tubes of Liquid Nails and Foamy "Stuff" and probably another 100 screws UNDER the trailer closing up the Coloplast, gaps and holes.

The end result was ... the furnace in the winter runs much, much less. The air conditioner in the Summer seems to make thing much cooler.

And there are no drafts on the bottom level floor any more, blowing through the return vent under the steps to the front upper level, because that is the open area that recirculates about half the air from the furnace inside the living area. The other half is recirculating the air under the floor in the underbelly and not sucking cold air from outside any more through all those holes, not sealed seams, and cracks.