As of January 2015, Consumer Reports rated Andersen, Marvin and Pella as the best home window brands. JELD-WEN, Kolbe, Lincoln, Ply Gem, Reliabilt, Simonton and Weather Shield are also considered leading manufacturers.
Consumer Reports develops tests to rate the highest quality products for consumers. In its home window buying guide, the company rates Andersen, Marvin and Pella above their competitors, earning them the title of the best home windows.
Consumer Reports rates windows on multiple factors, such as how much heat a window traps, how much heat comes in through the windows and how much light the windows allow. There are 11 brands in its report, each with a summary of features, sizes and purchasing locations.