Irondale's median income runs $61,454, above the wider service area's $50,060, and the housing stock here, centered around 1994, is newer than much of the territory we cover, where the median build year sits closer to 1976. That combination matters: newer steel doors on torsion springs fail predictably from cycle fatigue and cold-weather stress, not from the rot or warped wood panels you'd find in a much older neighborhood. A spring rated for a certain number of cycles doesn't care how nice the house is - it goes when it goes, usually without warning, and usually when it's cold out and the steel is stiffer than it was in July.