When my roommates and I moved into an older home for rent, we were very pleased by the modern updates to the otherwise dated structure. Though the place was built in the 1950s, the owners had updated the kitchen and even took upon the very expensive task of installing all new Anderson windows throughout the home. This was one of the deciding factors when we moved in–we wanted to live somewhere that was built to withstand our harsh winters, without constantly having to DIY the house with shrink wrap and another round of door pads each and every year. Modern windows can mean a huge savings in home heating costs, regardless of what kind of central heating system your house runs on. However, this did not mean we were exempt from error. Our house is pretty far out in the country, so we almost never think to lock up our windows at night. This became our undoing when we woke up one morning after a particularly harsh winter storm. My roommate and I got up to let our little dog out, only to find that the wind from the Noreaster was so strong it had opened our windows in the night. It had even managed to move the screens aside and push snow into the house. This meant our poor oil furnace was just pushing air outside while we had slept. You should always take care to lock your doors and windows during the night and day throughout winter. Closing them is not enough to keep out the cold air, as this does not seal the closure completely. Locking your windows applies additional pressure against the windows, working to hold the window against the sealants and eliminate drafts. Whether your house runs on a gas furnace or an electric heater, be sure to lock your windows up tight each and every winter season.