1. Clean out the gutters, disconnect and drain all outside hoses. If possible, shut off outside water valves.
2. Insulate walls and attics, and caulk and weather-strip doors and windows.
3. Examine roof shingles, repair roof leaks and remove tree branches that could get weighed down with ice or snow and fall on your house – or your neighbor's . . .
4. Wrap water pipes in your basement or crawl spaces with insulation sleeves to slow heat transfer.
5. Consider an insulated blanket for your hot water heater.
6. If you have a fireplace, keep the flue closed when you're not using it.
7. Avoid ice dams – where water from melted snow refreezes in the gutters and seeps in under the roof, soaking interior walls. Here’s how: Ventilate your attic. Insulate the attic floor well to minimize the amount of heat rising through the attic from within the house.