Beyond 12 years, the 50% cost threshold signals when replacement outpaces repair economics
https://precision-reputable-hvac.trexgame.net/insurance-rarely-covers-hvac-repair-when-a-single-component-fails-1
The ideal age to replace an HVAC system hinges on documented cost-ratio data: once repair expenses exceed 50% of replacement cost in a single season, replacement becomes the data-backed threshold