Two things drive most of the calls we get in this area. First is age: with housing here built mostly between 1951 and 2012 and the bulk of it dating to the 1980s and 90s, a lot of doors and openers are sitting right at or past the end of their expected service life, and springs in particular don't give much warning before they go. Second is the climate - a cold moderate band means real temperature swings through the year, and steel springs and cables expand and contract with that. A spring that's been cycling through Georgia winters and summers for two or three decades has seen more stress than the cycle count alone suggests. Across the roughly 44,786 owner-occupied houses in this service area, that combination of age and seasonal swing is the single biggest reason doors fail the way they do - not a defect, just time and temperature doing what they do to steel and nylon.