What is the typical lifespan of a Goodman AC unit?

What is the typical lifespan of a Goodman AC unit is 15 to 18 years with normal residential use and proper maintenance, which is similar to industry average for AC units of 15 to 20 years and slightly shorter than premium brands like Trane and Carrier at 16 to 20 years but similar to Rheem and Ruud at 15 to 18 years. Goodman AC units including GSX14 14 SEER single stage, GSXC16 16 SEER two-stage, and GSXC18 18 SEER variable speed are built with standard Copeland scroll compressors and plate fin coils designed for 15-year life. Typical lifespan depends heavily on climate, usage, and maintenance. In hot climate like Texas and Florida where AC runs 8 to 10 months per year with 3,000 hours annual run time, typical lifespan is 12 to 15 years due to more run hours and thermal stress and salt air corrosion near coast that degrades coil. In moderate climate like Ohio where runs 4 to 6 months with 1,500 hours annual run time, typical lifespan is 15 to 18 years. Factors that shorten lifespan include lack of annual maintenance with coil cleaning twice yearly, dirty filter causing high head pressure that strains compressor and reduces efficiency by 10 to 20 percent, and poor installation with incorrect refrigerant charge that reduces life by 3 to 5 years. Common parts that fail first include capacitor after 5 years at 150 to 300 dollars installed, contactor after 7 years at 150 to 250 dollars, and compressor after 12 to 15 years at 1,500 to 2,500 dollars. Goodman offers 10-year parts and lifetime compressor warranty on some models when registered.