No matter what kind of weather the Haverhill area is dealing with, you can be sure that windows and doors from Pella of Haverhill can deal with it. Our products are designed to be energy efficient. In fact, our ENERGY STAR®-certified windows and doors1 can help reduce 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 built to perform in specific climates across North America. Discover more about our energy-saving glass choices and technology.