What is the average life expectancy of a Goodman heat pump is 14 to 18 years with normal residential use and proper maintenance, which is similar to industry average for heat pumps of 14 to 18 years and slightly shorter than gas furnace at 18 to 22 years because heat pump runs year-round for both heating and cooling, doubling annual run hours to about 2,500 to 3,000 hours versus AC only at 1,200 to 1,500 hours. Goodman heat pumps including GSZ14 14 SEER single stage, GSZC16 16 SEER two-stage, and GSZC18 18 SEER variable speed are built with standard Copeland scroll compressors and plate fin coils designed for 15-year service life. Average life expectancy depends heavily on climate, usage, and maintenance. In hot climate like Texas where heat pump runs 10 months per year for cooling, average life expectancy is 12 to 15 years due to more run hours and thermal stress. In moderate climate where runs 6 to 8 months, average life expectancy is 14 to 18 years. Factors that shorten life include lack of annual maintenance with coil cleaning twice yearly, dirty filter causing high head pressure that strains compressor, and poor installation with incorrect refrigerant charge that reduces efficiency by 10 to 20 percent. Common parts failing first include capacitor after 5 years at 150 to 300 dollars installed and compressor after 12 to 15 years at 1,500 to 2,500 dollars. Goodman offers 10-year parts warranty when registered within 60 days, indicating expected 15-year life, and many owners report 14 to 18 year lifespan.
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