The pattern we see across Gilbert's four main housing pockets is the opener motor and the spring giving out around the same age, because most of these doors were installed once, at construction, sometime between 1990 and 2002. That means a huge share of the doors we get called on are 20 to 30 years into a part that was rated for maybe 10,000 cycles. It shows up as a door that hesitates halfway up, or an opener that runs hot and trips its own breaker on a July afternoon. Heat is the other half of it. This area sits in a severe heat band, and steel expands under a closed, unventilated garage all summer. A door that was hung slightly out of square in 1995 gets worse every year the metal cycles through that heat, and by the time you notice the panel binding on the track, the rollers have already worn a groove. None of this is dramatic. It's slow, and it's the same slow failure on street after street of the same-era house.