Systematic maintenance scheduling prevents premature HVAC replacement within 15 years
https://precisionhvacdiagnostic.lowescouponn.com/throughout-your-hvac-system-s-15-to-20-year-lifespan-know-when-to-repair-or-replace-1
Most HVAC systems last 15 to 20 years, but the true replacement timeline depends on your service-cadence workflow and preventive care protocol