Manual J Calculations Add 10 Years to Unit Lifespan Through Accurate Sizing

https://precisioneverydayhvac.tearosediner.net/manual-j-calculations-add-10-years-to-unit-lifespan-through-accurate-sizing

An HVAC system typically lasts 15 to 20 years, but correct Manual J load calculation and proper tonnage sizing can add a full decade to that lifespan