06/01/2026
The $100 Part That Can Save a $5,000 Compressor
If your AC is humming but the outside fan isn’t spinning—or if it’s struggling to start up altogether—your capacitor might be dead. Think of the capacitor like a giant battery that gives your system the electrical push it needs to turn on. Leaving a failing capacitor alone forces your compressor to overheat, which can ruin your entire system. Replacing it early is a quick, affordable fix that saves you from a massive headache later.