Alderfer Glass Provides a Clearer Look Into Window Ratings
Alderfer Glass, a leading provider of high-quality windows in Allentown, PA, understands that window efficiency ratings can be complicated and confusing for the average homeowner. To clear up this important subject, they're providing some background information about the role that two vital rating factors (U-factor and Solar Heat Gain Coefficient) play in determining a window's energy efficiency.
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