Energy Savings Start at the Glass: Window Features That Matter Most
The Glass Is Usually Where Efficiency Starts When homeowners compare replacement windows, they often focus on frame color, grille style, or how the sash opens, but the real energy performance starts with the glass. That matters because the glass controls how much heat moves in and out of the house, how much sunlight comes through, and how hard the HVAC system has to work when the weather turns extreme. For homeowners comparing the best windows for hot Knoxville sum