Just realize that your RV is, at best, a 3 season RV.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
No heaters and don't think I want to try removing underbelly to install. Fortunately will be at campground with full hookup. Hopefully it doesn't go full winter on me. Wasn't sure how much heat the ductwork would provide. Evidently not much, thanks.
Grab some political vote for me signs of your choice and place them around your TT, from the side to the ground. Thus "enclosing" the underbelly. It will keep the wind from sucking out the heat in the underbelly area and also keep the living area warmer. Try to seal off the underbelly as best you can.
Good hunting to you.
My most favorite people are Navy Corpsmen and Marine medivac helicopter pilots and crew - MEJ 1968
Many times and with the things I mentioned, we're usually good down to about 20° to 25° for several days. Beyond that, unless you wrap the lower exterior and add some sort of heat there, you fight a losing battle.