Heating the under belly?

We brought our 2009 Sundance 3200ES to the Grand Teton National Park for its break in trip. The low tonight is 11 degrees. Any suggestions on how to heat the underbelly without using all of our propane? I have heard of putting an electric heater but don't know how this is done. Does anyone know how? We are here from April thru October and the nights get pretty cold.

I haven't had mine long enough to have to deal with it, but I have read on the forum about placing a drop light or lamp behind the UDC. You definitely have to have the furnace going to keep the water lines underneath heated. I'd leave the cabinet doors open and have an electric heater in use in the rig to assist the furnace.

We have a small electric heater in the basement...then 2 heaters plus a fireplace on during the day. At night the fireplace is off but all other heaters are set.

PK

Heating The Underbelly...

As noted in the previous replys....A light or heater will help.
We have been down pretty cold here in
Colorado and the worst trouble spot we found
is your "Low Point Drains".
They come slightly out of the protective insulation
almost right behind the steps on my 3055RL Bighorn.
When this spot freezes,you will not have any water
in the kitchen. You can add insulation or put a light or
heater on this spot and head off some troubles.
This has been discussed quite a bit on this forum.