Have you thought about the process of actually replacing the windows? If you've hired a window professional to come to your home, you'll want to take some time to research them and find out who best serves your needs. That is not always the easiest thing to do. There are a lot of companies to choose from. How long have they been around? What is Angie's List reputation? Do they have insurance? You get the picture.

If your existing frames and sills are still sound and square, you'll save money on materials and labor by using partial replacement units. They're also known as "pocket replacements" and fit into the existing frames. Otherwise, you'll need full-frame replacement windows. These include the frame, sill, jambs, and usually what's known as a nailing flange, which attaches the window to the outside wall around the opening.

There is a lot to think about when researching windows and doors for your home. This website is more information to help you learn about windows and doors, and you allow your window professional to be as efficient as possible.