No matter what kind of weather the Portsmouth area is dealing with, you can be confident that windows and doors from Pella of Portsmouth can handle 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 thanks to our energy-efficient features like double- and triple-pane glass, Low-E coating and glass panes made to perform in specific weather areas across North America. Find out more about our energy-saving glass options and technology.