Mid-Life Cooling Units Face BTU Capacity Drift Without Load Recalculation Standards
https://sacramento-precision-hvac-affordable-sac-sac-ca5294.zenbloomer.com/posts/sunk-cost-repair-cycles-trap-homeowners-when-common-hvac-problems-escalate-beyond-saving
A seven-year-old AC unit sits in a gray zone according to Manual J load calculation standards. Age alone doesn't determine failure, but documented load calculations reveal whether your unit still matches your home's actual cooling demand