No matter what type of weather the Greensboro area is facing, you can be certain that windows and doors from Pella of Greensboro can withstand it. Our products are built to be energy efficient. Because of that, our ENERGY STAR®-certified windows and doors1 can help decrease your energy costs. This ENERGY STAR certification is a result of our energy-efficient products like double- and triple-pane glass, Low-E coating and glass panes built to excel in specific climates across North America. Discover more about our energy-saving glass features and technology.