Plastic or rather polyethylene tarps or sheets, even plastic bags, stapled to Windows around frame help a lot to keep house warm. Another very good trick, is to

Plastic or rather polyethylene tarps or sheets, even plastic bags, stapled to Windows around frame help a lot to keep house warm. Another very good trick, is to hang blankets in hallways that don't have doors. It keeps the room where the heat is warmer, and really really helps with drafts. That also helps to survive, if no heat anywhere, and to keep one living space warm To keep water in sinks bathrooms kitchens from freezing, keep the cabinet doors open, and if really cold, keep the water trickling, especially in cold water lines. These tricks can save your pipes from freezing, which is real mess and expensive. Source - Canadian.