The short answer is no, and the answer is for three reasons.  The best pricing on replacement windows can often be obtained when five or more windows are purchased at once. Another factor to consider if you’re replacing windows at different times, is that you may end up with a slightly different window design, if the manufacturer makes any changes to a specific window design in the meantime.

If you do decide to move forward with only replacing a handful of windows, complete your project by sections of your house (or by room) to make sure that if there are design changes it’s less likely to be noticed. Lastly, you will notice the best energy savings when your entire house is filled with energy star rated windows. According to the Department of Energy, windows and doors are responsible for 21% of air leakage in the home. In order to minimize this energy loss and maximize savings it’s best to replace as many windows at once as possible.