The climate band here runs moderate heat rather than extreme, which matters for how these doors age. Steady warm-to-hot stretches don't shock a spring the way a hard freeze-thaw cycle does, but they do dry out lubricant on rollers and hinges faster than a cooler climate would, and they let rust get a foothold on any hardware that's lost its coating. On a door built around 1991, that's thirty-plus years of that slow wear compounding - grease drying to a crust on the torsion bar, hinges going stiff, the spring losing tension a little at a time instead of all at once. It's rarely one dramatic failure. It's usually a door that's been getting harder to lift for months before the spring finally lets go, or an opener that's been straining against stiff hardware until the motor gives out. That gradual pattern is exactly what you'd expect from a house this age in a climate this warm - it's not the kind of failure you'd see on a newer door or a colder one.