using PVC for heat duct ?
I am in the process of replacing the flooring in our 1985 Georgie Boy Class A. I took out the seating to reveal the flexible heat duct tubing is in poor shape...many tears and holes, so it needs to be replaced.
I am wondering for the longer runs would it be possible to use 3" PVC pipe? I would think it would be more stable, and more efficient to deliver the heat where it was to go?
Any thoughts on this or should I just get some of the flexible stuff and repair as needed with duct tape?