No matter what type of weather the Northern Virginia area is experiencing, you can be sure that windows and doors from Pella of Northern Virginia can handle it. Our products are crafted to be energy efficient. As a result, our ENERGY STAR®-certified windows and doors1 can help reduce your energy costs. This ENERGY STAR certification is due to our energy-efficient features like double- and triple-pane glass, Low-E coating and glass panes built to stand strong in specific weather areas across North America. Find out more about our energy-saving glass options and technology.