Using the Vista or any motorhome in freezing temps that don’t last more than 24 hours or so is not a worry. Overnight freezes followed by days above freezing is fine, as well.
But even with heated tanks, staying in extended below freezing temps are a real risk of pipe damage.
If you take other precautions, such as skirting around the bottom and Aux heat underneath you might get by, but you’ll be uncomfortable inside no doubt. And you’d need to add a very large propane tank.
There are no motorhomes that offer true 4-season usage.
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2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
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