What is the life expectancy of an American Standard AC unit?

What is the life expectancy of an American Standard AC unit is 16 to 20 years with normal residential use and proper maintenance, which is similar to industry average for AC units of 15 to 20 years and identical to Trane lifespan since same factory and components made by Trane Technologies in Tyler, Texas, and slightly longer than mid-range brands Rheem, Ruud, York at 15 to 18 years and value brands Goodman, Amana at 15 to 18 years, indicating premium durability. American Standard AC units including Silver 14 4A7A4 14 SEER single stage, Gold 17 4A7A7 17 SEER two-stage, and Platinum 20 4A7V0 22 SEER variable speed TruComfort are built with heavy-duty spine fin coils that resist corrosion better than standard plate fin used by many competitors, thick gauge steel cabinets with powder coat paint, and standard Copeland scroll compressors designed for 15 to 20 year service life. Life expectancy depends heavily on climate, maintenance, and installation quality. In hot climate like Texas where AC runs 8 to 10 months per year with 3,000 hours annual run time, life expectancy is 13 to 16 years due to more wear. In moderate climate where runs 4 to 6 months with 1,500 hours, life expectancy is 16 to 20 years. Factors that extend life include annual professional tune-up at 100 to 150 dollars, filter changes every 2 to 3 months, coil cleaning twice yearly, and correct refrigerant charge. American Standard offers 10-year parts and 12-year compressor warranty on many models indicating expected 16-year life, many owners report 16 to 20 year lifespan with only minor parts like capacitor at 150 to 300 dollars replaced.