Across the 32 named areas in this service territory, the housing stock mostly dates from the 1980s and 90s, with a lot of construction clustering around 1997. That means a huge number of garage doors are now old enough that their original rollers - whatever came standard from the builder - are at or past the end of a normal service life, all at roughly the same time.
The severe heat band this area sits in adds wear that doesn't show up in cooler climates. Rollers, especially the plastic-ended kind, expand and contract daily against a metal track that does the same thing at a different rate, and that friction adds up fast over twenty-plus years. With 52,042 owner-occupied houses spread across this area and a median household income of $48,777, a full roller set is usually the repair that makes financial sense before the door itself needs replacing - it costs far less than a new door and buys back years of quiet, even operation.