Window U-Factor and SHGC Ratings Explained for Maryland Homeowners
Why U-Factor And SHGC Ratings Matter For Maryland Homes A lot of people shop by frame color or style first, then realize the performance numbers are what affect the monthly bill and the way the house feels in January and July. For Maryland homeowners, U-factor and SHGC deserve real attention. U-factor measures how much heat escapes through the entire window assembly. Lower is better, because a lower number means less heat loss in winter and less heat gain when the wea