Once HVAC equipment hits 15 years old, failure costs spike beyond $5,000 annually

https://atavi.com/share/y0lenxz1g6ecw

The $5,000 rule is a failure-risk threshold: once your HVAC system reaches age 15, running it beyond that point exposes you to replacement-cost shock far exceeding $5,000, plus the breakdown liability of a mid-cycle failure during Sacramento's