Coppell's housing stock runs from 1959 up through 2014, with the median landing around 1999 and the bulk of it built during the 1980s and 90s push. That means a large share of doors in town are somewhere past the 20-year mark on original torsion springs, which is right where they start failing regardless of how well they've been maintained.
The moderate heat band this part of Texas sits in adds to it. Garage interiors run well past outdoor temperatures in summer, and that heat cycle dries out factory grease on springs and rollers faster than a garage in a milder climate would see. Combine an aging spring with grease that's gone stiff, and the failure point moves up by years.
We're a few miles from Valley Ranch, and the housing pattern doesn't change much between here and there - same era, same builders, same hardware showing the same wear at the same age.