Alphabetically, here's what we see from each town and why, based on when the housing in that area generally went up.
Aliso Viejo, Coto de Caza, Ladera Ranch, Rancho Mission Viejo - newer stock, closer to the 2000s-2015 end of the range. Failures here are more often opener electronics, sensor alignment, or a worn roller than the spring itself giving out.
El Cerrito, Lake Elsinore, Lakeland Village, Temescal Valley, Warm Springs - a wider mix of ages, so we don't assume; we ask first.
Laguna Beach, Laguna Hills, Laguna Woods, Las Flores, North Tustin, Rancho Santa Margarita, San Clemente, San Juan Capistrano, Silverado, Trabuco Canyon, Villa Park - these line up more with the 1980s-90s stretch of the local building boom. That era is where we replace the most torsion springs outright, since a thirty-plus-year-old spring is well past its cycle count no matter how it looks.
The mild temperate climate across this whole stretch means we're not fighting the frozen-track or warped-wood-door problems you'd see somewhere with real winters. Most of what fails here fails from age and cycles, not weather.