Green Seal
Andersen Corporation is the first and only Green Seal Certified window manufacturer. Green Seal is a national non-profit environmental organization that helps consumers choose environmentally responsible products. Andersen Corporation is the first and only window manufacturer to receive Green Seal Certification, including certification of all Renewal by Andersen replacement windows.
Green Seal estimates that if all windows in the U.S. were as energy efficient as those made by Andersen, Americans would save up to 2.5 percent of the annual U.S. energy consumption—an estimated 200 gallons of oil for every household in the U.S.
