U-Factor is term you’ll hear a lot when you look at windows. It is often the first thing consumers will look at. So what exactly does it mean and what is a good or bad U-Factor?
U-Factor represents the overall heat transfer coefficient of the window. Simply put, U-Factor measures the amount of heat loss through a window.
A lower U-Factor means less heat will escape through a window and the product is better insulated. U-Factor is especially important during the winter months and can make a big difference in heating costs.
The typical range of U-Factors for windows fall between .20 (most energy efficient) and 1.20 (least energy efficient).
Here’s a look at some typical U-Factors for various windows:
Next time you are in the market for replacement windows, be sure to check out the U-Factors of the different windows and choose one that will properly insulate your home.
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