Manufacturer coverage determines whether repair or replacement suits devices reaching 15-20 years

https://sacramento-precision-hvac-affordable-sac-sac-ca5294.zenbloomer.com/posts/costly-repairs-await-when-compressor-or-condenser-failures-go-unaddressed-in-summer

Most HVAC systems last 15 to 20 years, but warranty status—not age alone—drives whether repair or replacement makes sense