Originally Posted by JeepnRv
we don't have to worry about anything freezing.
He's probably full of... I mean he's probably misinformed.
We're winter camping right now - and as usual - the answer is it depends.
Our 31FK has exposed pipes but seems to tolerate weather into the mid-20's and up.
It's frozen up a few times we've camped into the mid teens (*F).
It really depends on just how cold it's going to get and for how long. If you're camping and keeping the inside toasty, then a lot of heat radiates out.
If it's super cold then there other systems to worry about besides the pipes. The fridge and water heater to name two.
Here it's low 40's during the day, so we camp 'as usual'. Last night and tonight it will hit the low 20's so I'm just going to winterize (pump RV antifreeze through everything) before I go to bed. It takes me about 10 minutes.
Then we just flush it all out in the morning. $6 of RV antifreeze each night, for peace of mind, is worth it.