Why does my home have low voltage in some rooms?

Low voltage in specific rooms is usually caused by a loose or corroded connection at an outlet, switch, or junction box. It can also result from an overloaded circuit, undersized wiring, or a long wire run that creates voltage drop. Start by checking for loose connections at the affected outlets. If the problem persists across multiple fixtures, call an electrician to inspect the wiring before the issue worsens.