Most of the houses we work on in this area were built between 1972 and 2007, with the median landing around 1989 - and across the nine named communities we serve, that 1980s-to-90s builder-grade door and opener is still the one hanging in the garage. That hardware wasn't bad when it went in. It's just old now, and it was never rated for thirty-plus winters in a COLD-severe climate band.
Steel torsion springs lose tension cycle by cycle, and cold makes that wire more brittle with every hard freeze-thaw swing. A spring that was already near its working life in a mild climate gives out years earlier here. Nylon gears inside older chain-drive openers crack the same way - cold makes plastic less forgiving, and a gear that would limp along somewhere warmer just shears.
This isn't a defect story. It's an age-and-climate story. A door and opener installed the year a lot of these neighborhoods were built is now old enough, and has seen enough hard winters, that failure isn't a surprise - it's overdue.