The median Elmhurst house went up around 1964. That's the number that matters more than anything else on this page, because a torsion spring is rated for a set number of open-close cycles, not a set number of years, and a door built in 1964 has had six decades to burn through that rating. Across the wider Wheaton service area the housing stock runs from 1938 to 2003 with a median closer to 1976, so Elmhurst sits on the older end of that range - firmly inside the 1960s-70s band that makes up most of the 89 areas we cover. What that means on the ground: original torsion shafts, original center brackets, and in a fair number of cases, a spring nobody has ever swapped. When one of those finally lets go, the cable often comes off the drum at the same time, because drums and cables age together with the spring, not separately. We don't assume the spring is the only worn part on a door this age - we check the shaft and bearings before we quote the fix.