Thought I would pass on an incident we had with freezing weather in our RV.
We traveled to the plains of Colorado last April and an unexpected temperature drop and snow greeted us. 17 degrees at night. Windy too.
Underneath our fridge are a lot of water lines. We removed the access cover to find it was freezing
We put a heater facing there and left all the kitchen cabinets slightly ajar. This kept the water lines from freezing. We also kept the rv park water hose disconnected.
On top of this, the propane heater wasn't working, we found out when we returned home there was a spider web in the line.
We were very cozy with just little heaters. These heaters are kept in our unit at all times now in case of another situation like that.
Another option would be to use a high rated extension* cord with the cord through the side of the slide and use the park power instead of the trailer wall plugs. (*10 gauge 25 ft cord for up to 20 amps)
When we returned home Mike installed a vent under the fridge that opened and closed for easy airflow access.
"Pelonic Classic" Ceramic Heater. Covers up to 13x20 foot area. Draws about 12.5 amps 1000-1500 Watt SMALL 7" tall but very
effective. Safety tipover shutoff. We keep two in the RV.
"MyHeat" Ceramic Heater small areas only
. Draws about 1.5-2 amps. 200 watt 6.1" tall. Over-heat protection and cool-touch housing. Great for the bathroom floor. No tip over protection though. On off switch only. We use only when we are in the trailer. We keep two in the RV
Hope this info helps someone.