Window U-Factor and SHGC Recommendations for South Carolina Homes
If you are shopping for replacement windows in South Carolina, the two numbers that matter most are U-factor and SHGC. SHGC, or solar heat gain coefficient, measures how much of the sun's heat gets through the glass. In practice, the best choice is usually not the absolute lowest number in every category, but a balanced window that fits the home, the exposure, and the budget. A lower U-factor means better insulation. SHGC is the number that often gets overlooked