If your home was built before 1990, there's a good chance your panel is underbuilt for everything you've added since — modern HVAC, big appliances, computers, an EV in the garage maybe. We upgrade panels from 100 amps to 200 amps (or higher when the load calls for it), and we replace the older fuse boxes and Federal Pacific panels that should have come out years ago. Every panel job includes a look at the connecting wiring, not just the box itself.