No matter what manner of weather the Baltimore area is experiencing, you can be sure that windows and doors from Pella of Baltimore can handle it. Our products are built to be energy efficient. Because of that, 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 made to perform in specific regions across North America. Discover more about our energy-saving glass choices and technology.