No matter what kind of weather the Greenfield area is facing, you can be confident that windows and doors from Pella of Greenfield can withstand it. Our products are built to be energy efficient. In fact, our ENERGY STAR®-certified windows and doors1 can help lower 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 designed to perform in specific climates across North America. Find out more about our energy-saving glass options and technology.