Lots of talk about heated hoses, freezing water, and how to camp when it’s cold outside, so let me share a little about my setup.
I’m in GA now, without a heated hose, and here’s my system:
1) I’ve got two electric space heaters inside, both energy efficient, and both set to keep it around 62-65° inside, which is comfy for me in sweats.
2) I have the furnace set to 55°, so anytime it’s too cold for the space heaters to keep up, the furnace kicks in, which also keeps the belly warm.
3) I keep my freshwater tank no more than 3/4 full so I have water on board if I need to disconnect from the park, but with enough room for expansion if it were to happen.
4) If the weather is going to be 30° or less for more than four hours overnight, then i’ll go disconnect and drain my exterior hose after my shower, but before bed.
Remember that water starts to freeze at 32°F, BUT, that doesn’t mean all of the water inside a tank, or even a hose, will freeze at once.
Also, anytime your FURNACE is on, you’re heating the living area AND the under belly, which includes the tanks. This means, in theory, you could simply fill up your tank, keep the furnace on low, and live all through the winter (emptying your waste tanks and filling your fresh tank(s) as needed), but this means you’ll be using more propane (since your furnace uses the most propane of all your gas appliances).
Since I bought my TT in April of 2017, the lowest temp i’ve been in is 17°F (low for the night), and with the system called out above, I didn’t have any trouble at all! 😀