A door installed around 1990 was built for a different opener standard than what's sold today - lower horsepower, no battery backup, and often no auto-reverse sensors at all until later retrofits. If your home still has the original unit, it predates the rolling-code safety features that became common through the 1990s and 2000s. That matters for two reasons: parts availability drops off for anything made before the mid-90s, and older torsion spring systems were often sized more conservatively than current code calls for, which shows up as a door that feels heavy to lift by hand once the spring starts to fatigue. With Phoenix-area summer heat working against steel and lubricant year after year, springs and bearings in homes from this period are usually closer to replacement than owners expect, even when the door still opens and closes on command.