Merry Christmas to all who celebrate it.

[Grumpy Goat]

Does your camper have a way to heat the water lines and holding tanks so they don't burst when using it in freezing weather?

Yes, it has an enclosed underbelly with heating elements on the tanks. Didn't have to use it while we were camping.

When in storage I usually run the faucets dry after turning off the water pump, and then leave the faucets open so that any entrained water in the lines can expand as they freeze. I then turn on a small heater in the compartment with the water filter and accumulator tank to keep any water in them from freezing. I don't bother to evacuate the whole system and re-fill with antifreeze (called winterizing) since our hard freeze events are few and far between.