Our winterizing your home checklist will help you keep your house cozy and safe from winterís frigid assault. Insulate Windows Winter drafts can drive up your energy bill ó and detract from the cozy vibe you want inside your home when itís cold outside ó if your windows have any air leaks. But by reducing drafts you can lower your homeís energy costs by up to 20% per year, according to the U.S. Energy Department, while also making your living space more comfortable. Here are five simple solutions (all under $8!) that will allow you to insulate your windows quickly: