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