ENERGY STAR Window Requirements for the South-Central Climate Zone in Texas
How The South-Central Climate Zone Changes Window Specs ENERGY STAR does not use one cookie-cutter window target across the country, which matters in Texas because the South-Central climate zone has its own performance expectations. Around Fort Worth, the window that looks fine on paper can still feel wrong in the house if it lets in too much solar heat. The numbers that matter most are usually U-factor and SHGC, because they reveal whether a window is helping with