When buying new windows, you should look for Energy Star certification to ensure that you're getting the most energy-efficient product possible. You should also consider the type of window frame (vinyl is the most popular and affordable option) and glass type (double pane is most common). Finally, be sure to measure the size of your window opening so that you order the correct size window.

When buying new windows, it's important to consider the climate of your area. If you live in a cold or wet environment, you'll want to buy windows that are made to keep the weather out. If you live in a warm climate, you'll want to buy windows that allow natural light and ventilation into your home. It's also important to measure the size of your existing window frames before you go shopping for new windows. This will help ensure that you get the right size and style of window for your home. And finally, be sure to ask your installer about window warranties and installation procedures before making a purchase.