Vanlife for some families is warm weather only. Certainly camping and boondocking is more fun when swimming and evening campfires are part of the deal. For many, because of where they live, the van experience can be 12 months a year. But for others, have snow on the ground dampen the experience. Freezing temperatures bring a host of issues for van living. It’s possible to design your build to mitigate the impact of the cold temperatures. Using good quality insulation, such as Havelock Wool havelockwool.com/ will help you keep in the heat you may generate -maybe using a diesel vevor heater www.vevor.ca/diesel-heater-c_... . It’s important to remember that no matter what you do, the very nature of van means that unless you sacrifice all the interior space, there is limited room for insulation. So no matter what, when the air get cold outside, it’s gonna get cold inside too. And trying to keep the inside warm is going to create issues with condensation. Without question - van life is easier, cleaner, cheaper, and more fun when it’s warm.