No matter what manner of weather the Des Moines area is facing, you can be confident that windows and doors from Pella of Des Moines can withstand it. Our products are crafted 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 a result of our energy-efficient options like double- and triple-pane glass, Low-E coating and glass panes designed to perform in specific climates across North America. Discover more about our energy-saving glass features and technology.