Once the leaves start falling, the temperature starts to decrease and your home gets colder. If you live in an older home you likely feel the cold more than those who live in newer or updated homes and either have to be cold or have the heat running constantly. One of the biggest places where the cold comes in is from your old windows. The single-pane windows allow that cold air to come right on inside. This DIY article from Better Homes and Gardens will take you through the steps to replacing your old windows with new energy-efficient windows.
https://www.bhg.com/home-improvement/windows/window-repair/diy-replacement-windows/