Hampshire's median household income runs $107,774, well above the $89,488 median across the wider service area we cover out of DeKalb. That number matters more than people think, because it changes the math on repair versus replace. At this income level, a $400-$600 repair on a 15-year-old door isn't a hardship decision the way it might be elsewhere - it's a question of whether the door is worth saving at all.
And here's the local wrinkle: most of this service area's housing dates to a median year of 1976, built on older single-wall steel doors and side-mounted torsion hardware. Hampshire's housing stock is younger, with a median build year of 2003. That means most doors here aren't failing from decades of wear - they're builder-grade doors from the early 2000s hitting the end of their service life at the same time, with thinner insulation and weaker springs than what's sold today. A door that still opens and closes can still be the wrong door for a winter this cold.
The failure mode isn't broken hardware. It's a door that technically works but was never built for a DeKalb County winter, and an owner who can afford better not knowing the current one is underperforming.