ANSWERS: 1
  • Not really. The U-factor (also known as the U-value) of a window accounts for conduction, radiation, and convective heat transfer from the warm side to the cold side of the window. A lower U-factor means a better-insulated window and is most useful in determining winter heating performance. For more information contact: California Window Initiative 604 Bancroft Way Berkeley, CA 94710 (800) 600-9050 (510) 649-9593 Fax (510) 649-9593

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