U-Factor Window Ratings Maryland Homes: How to Compare Options
What A Window U-Factor Really Means Among the numbers on a window label, U-factor is the one that most directly reflects how much heat the window lets pass through. For Maryland homes, that matters in both heating season and the long humid stretch of summer. In simple terms, a window with a lower U-factor helps keep conditioned air where it belongs. U-factor is not the same as visible light, solar gain, or even frame style. How To Compare Ratings Without Gett
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