Above All Signs, Reduced Airflow Signals Time for HVAC System Replacement

https://precision-hvac-repair-crew-sac-near-heron-school0897.wordcanopy.com/posts/manual-j-calculations-add-10-years-to-unit-lifespan-through-accurate-sizing

Yes, you should replace your HVAC system before it fails if airflow has noticeably declined despite repairs