If you live on a street with a fair amount of traffic, from cars or passersby, you might expect the room with the most windows to be the noisiest. But it doesn't have to be. Many of the same window technologies that offer thermal insulation also deliver insulation against sound. According to Lincon of Sears Home Services, homeowners often notice the change right away. "Time and time again, I work with clients who report that after replacing old windows, their living spaces seem quieter and more peaceful—like it's the same house, but in a new location." Similar to increased home resale value, hushed interiors are one of the "hidden benefits" of window replacement, he adds.