: Lower is better. A lower number means the window is a better insulator and keeps more heat inside during winter and outside during summer. Eurocraft Energy Efficiency Features
A U-rating measures the rate of non-solar heat transfer through a window assembly, including the glass, frame, and spacers. : Ratings typically range from 0.20 to 1.20 .
: Their windows feature five insulating chambers that prevent thermal bridging—a process where heat flows through poor insulators.
: Lower is better. A lower number means the window is a better insulator and keeps more heat inside during winter and outside during summer. Eurocraft Energy Efficiency Features
A U-rating measures the rate of non-solar heat transfer through a window assembly, including the glass, frame, and spacers. : Ratings typically range from 0.20 to 1.20 . Eurocraft Windows U Rating
: Their windows feature five insulating chambers that prevent thermal bridging—a process where heat flows through poor insulators. : Lower is better