Crofton New Windows and Doors Repair Insights 4338

The Basic Meaning Of U-Factor U-factor measures heat flow through a window, so a lower U-factor generally means the window resists heat loss more effectively. That matters in Maryland because the weather swings hard enough to expose weak windows fast. U-factor and solar heat gain coefficient are related, but they answer different questions. It is an assembly rating, which is why frame material, gas fill, and glazing all matter. Two windows may look nearly ide