Heat degrades springs and rollers
Galvanized coatings on torsion springs wear thin under sustained high heat, grease in rollers and hinges breaks down sooner, and nylon rollers get brittle. None of that is unique to one house - it's a function of the climate the whole area sits in. Practically, a spring or roller job on a standard double door usually runs a single visit once the tech has the right part on the truck.