# Electrical panel buzzing: what to do right now

Updated: 2026-10-24 · https://pros411.com/en/guides/electricians/electrical-panel-buzzing

## Short answer

If your electrical panel is buzzing, do not touch it or open it. If you see smoke or smell burning, get everyone out and call 911 from outside. If not, keep people and pets away. Turn off big appliances at the appliance itself, like a space heater or the AC at the thermostat. Then call an electrician today. A loud buzz, crackling or heat usually means a loose connection or a failing breaker.

> Safety first: Do not touch a buzzing, hot or burning-smelling panel, and do not open its cover or flip its breakers. Smoke, sparks or a burning smell: get everyone out and call 911 from outside.

## What to do when your electrical panel buzzes

![Cartoon breaker panel buzzing and warm, looking scared, with a cat watching from the next room](https://pros411.com/img/guias/electrical-panel-buzzing.webp)

1. **The panel is buzzing: hands off.** A loud buzz, crackling or sizzling from the breaker box is a warning. Do not touch it, open it or lean on it.
2. **Smoke or burning smell? Get out, call 911.** Get everyone out, pets too, and call 911 from outside. Do not stop to flip breakers on the way.
3. **Don't open the cover or flip breakers.** Parts behind the cover stay live even with the breakers off. A loose connection can arc when it moves.
4. **Turn off big loads at the appliance.** Switch off the space heater, the dryer or the AC at the thermostat. Less load can quiet the buzz, but it does not fix it.
5. **Call an electrician today.** Keep everyone away from the panel until they come. Tell them what you hear, smell or feel, and what was running.

## Why an electrical panel buzzes

- A loose connection on a breaker or a wire. Loose connections heat up and can start a fire.
- A breaker that is failing and should have tripped.
- Too much load on one circuit, like a space heater and a microwave together.
- Corrosion or water inside the panel.
- A faint, steady hum can be normal on some panels. Loud buzzing, crackling, heat or a smell is not.

## What not to do

- Do not open the panel cover or touch anything inside.
- Do not put your ear or your hand on the panel to check it.
- Do not keep using big appliances on the buzzing circuit.
- Do not throw water on an electrical fire. Get out and call 911.

## When to call an electrician

- The panel buzzes, crackles or sizzles (call an electrician today).
- You smell burning or see smoke, sparks or scorch marks (call 911 first).
- The panel cover or a breaker feels warm.
- Breakers trip often, or lights flicker when big appliances start.
- Water got into or near the panel.

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## Frequently asked questions

### Is a buzzing electrical panel dangerous?

It can be. A loud buzz usually means a loose connection or a failing breaker, and both can overheat and start a fire. Do not touch it, and call an electrician today.

### Is it normal for a breaker box to hum?

A very faint, steady hum can be normal. Loud buzzing, crackling, sizzling, heat or a burning smell is not: keep away and call an electrician.

### Should I turn off the main breaker if my panel is buzzing?

Not if you have to touch a hot or buzzing panel to do it. If there is smoke or a burning smell, get out and call 911. Otherwise turn off big loads at the appliance and let an electrician handle the panel.

### What do I do if my breaker box smells like burning?

Get everyone out of the house and call 911 from outside. Do not try to reset or switch off breakers on your way out.

### Why is my breaker buzzing but not tripping?

The breaker may be failing, or a connection on it is loose. A breaker that buzzes under load should be checked by an electrician soon.

### Is a buzzing panel an emergency?

With smoke, sparks or a burning smell, yes: call 911. Without them, call an electrician today. Use the "24/7 emergencies" filter to find electricians who answer now.