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

https://sacramentoprecisionhvacrepair-pros-near-westacre-park6826.lumenforgex.com/posts/warranty-coverage-determines-whether-your-air-conditioner-replacement-qualifies-for-protection

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