Housing across the Madison area mostly went up between 1976 and 2012, with the bulk of it - across the twelve named areas we track - built in the 1980s and '90s, median year 1993. That matters because torsion springs are rated in cycles, not years, and a spring installed when a house was framed in, say, 1991 is now thirty-plus years and tens of thousands of open-close cycles into its life. These springs don't fail gradually. They hold tension until they don't.
Add the climate: Madison sits in a cold-moderate band, which means the hardware goes through real temperature swings across a year, not the mild variation you'd get further south. Steel contracts in cold, grease stiffens, and a spring already near its fatigue limit snaps on the first hard pull of a cold morning instead of giving you warning. That's why we get a run of spring calls tied to cold stretches, not just random failures - it's the same age of hardware hitting the same seasonal stress at once.
If your house falls in that 1976 to 2012 build window, the original torsion spring and the original opener are both candidates for failure on the same timeline, which is why we check both when we're already out there.