One Failing Part Triggers 300% Higher Repair Costs When Left Unaddressed
https://precisionhireprosac.image-perth.org/manual-j-calculations-add-10-years-to-unit-lifespan-through-accurate-sizing
The HVAC replacement rule is simple: when a component fails and remains unrepaired, it forces other parts to compensate, creating a cascade-failure risk that turns a single repair into a system-wide breakdown