Keller's median household income of $172,654, against 16,058 households, points to a lot of two- and three-car garages built to a similar spec in the same building wave - which means when one torsion spring or one opener circuit board fails, we're often looking at the same part failing on the house two doors down within a year or two, because they were installed at the same time. The service area's broader climate band is moderate heat, not the extreme swings that crack seals or warp panels fast, so Keller doors don't usually fail from weather stress the way they would somewhere with harsher summers or freeze-thaw cycles. What fails here is mechanical fatigue on hardware that's simply put in its cycle count. A door opened twice a day for 20-plus years has done the math already, whether or not anyone's tracked it.