Just because it is cold, you don't need to mothball your motorhome or campervan for the winter season.
Modern motorhomes and campervans are built to be used in all seasons and, if the 'van you're planning to buy is older, it still doesn't mean it can't be used in even sub-zero temperatures.
Insulation is vital so check what type of insulation has been used in the manufacture of the 'van and what depth or