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

https://precisionhvacrepaircorner.huicopper.com/component-capacity-decline-after-10-15-years-determines-when-residential-hvac-replacement-becomes-necessary

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