Start with what the door actually is. Most homes in Apache Junction were built around 1993, the median year for this part of town, which puts the garage door itself squarely in the steel sectional era - galvanized torsion springs mounted on a header above the opening, not the older side-mounted extension springs you'd find on anything from the 1970s. That hardware was built to run for decades, but it wasn't built for what this climate band throws at it. This area sits in a severe-heat zone, and repeated summer heat cycles cook the factory grease out of rollers and hinges years before the metal itself gives out. The result is a door that still looks fine but is quietly running dry. Spring steel also loses tension faster under sustained heat exposure than it does in milder climates, which is why a 1993-built door here is often further into its service life, functionally, than the same door would be somewhere cooler. None of this is a defect in the house or the door. It's just what thirty years of Sonoran summers does to galvanized coil steel.