As a Canadian, a few more tips: keep kitchen and bathroom cabinet doors open. To keep water pipes from freezing. They are trouble if they freeze, expand, crack, and then when thaw - start leaking. (Empty toilets if risk of freezing.)(add glycol if you have it, in bowl.) Also can trickle water from the taps - moving water sure but freeze so fast as still water. Blankets, in doorways, hallways, Windows - keep warmth in room where you need it.