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Stylized blue windows with sparkles, suggesting cleanliness and shine, on a white background.
Logo of Andersen Windows and Doors, featuring an orange and black triangular design on the right, symbolizing their commitment to energy-efficient windows.
What Makes a Window Truly Energy-Efficient? Here’s What to Look For

What Makes a Window Truly Energy-Efficient? Here’s What to Look For

May 20, 2025

If you’ve ever stood next to an old single-pane window during summer or winter, you know the struggle. The heat sneaks in, the cold leaks through, and your energy bill goes up faster than you can say “AC overload.” That’s where energy-efficient windows come in—but not...