You may be wondering when is the best time to replace your windows. The fast answer to this is anytime is a good time. There are several indicators you should look out for in deciding whether or not your windows need replacement. One of their easiest indicator is a cracked window. Windows do not usually crack on their own so most cracks are man made. If you have an old window that does not lock properly, you will need to consider changing them. Check to see if you see lots of tiny flying insect in your home. Many of them comes through windows that aren’t properly secured.