Most of the houses we get opener calls from went up somewhere between 1971 and 2003, with a lot of that stock clustered in the 1980s and 90s. That matters because openers from that era - chain-drive units bolted to wood headers, half-horsepower motors never meant to lift insulated steel doors - are aging out at the same time across whole streets. When one unit on a block fails, three more usually aren't far behind.
The mild temperate climate here doesn't stress openers the way a hard freeze-thaw cycle does up north, so it's less about weather cracking housings and more about age and duty cycle: gears wearing down, logic boards drying out, capacitors giving up after two or three decades of humid air and salt-tinged breeze off the harbor side of the county. We don't see openers fail from cold-snapped plastic here. We see them fail from just being old.
Because so much of the housing stock across our service area was built in that same twenty-year window, we end up replacing a lot of the same handful of opener models - same mounting brackets, same rail lengths, same header clearance problems. That's useful. It means when we quote a job, we usually already know what's behind the wall.