Most houses in this service area went up between 1958 and 2003, with the median sitting around 1983 and the bulk of the stock built through the 1980s and 90s across the 34 named communities we work in. That matters because a torsion spring is rated for a number of cycles, not a number of years, and a door installed when the house was framed has been opening and closing on the same hardware for three or four decades now.
The climate band here runs moderate heat rather than sharp freeze-thaw swings, so the failure mode isn't cracked concrete or ice-jammed track like you'd see further north. It's steady heat cycling that dries out lubricant, lets galvanized coating on the spring wire fatigue a little faster, and leaves cables stiff enough to fray at the drum. None of this happens overnight. It happens one hot afternoon at a time until the spring finally lets go, usually on the coldest morning of the year because that's when the metal is least forgiving.
We can't tell you the exact birth year of your specific garage without seeing it, but the stock profile across this area tells us what we're likely to find before the truck even pulls up.