HVAC systems over 15 years old fail at double the repair rate of newer units

https://precision-hvac-sacramento-crew-sac-near-sutter-park1477.evergrovio.com/posts/three-ton-units-age-past-twelve-years-show-measurable-capacity-decline-in-2000-square-foot-homes

The frequency of HVAC servicing depends on your system's age and documented failure-rate metrics