El Mirage's housing stock centers on a median build year of 2004, which puts it a touch newer than the broader Peoria service area's median of 2002. That's not a huge gap, but it matters for garage doors specifically: a 2004 build means the original door and opener are old enough to be at the end of a normal service life (springs are usually rated for a set number of cycles, and 20 years of Arizona heat use them up faster than the rating card suggests) while still being recent enough that the track spacing, panel width, and opener mounting are standard for parts available today. With roughly 11,136 households in the area, that's a fairly consistent pool of same-era garages, not a patchwork of eras - which is part of why the failures we see repeat rather than surprise us.