When replacement is the right answer
Replacement makes sense when the panel itself is the problem. That includes bus bars damaged by arcing, enclosures rusted from moisture, and panels where replacement breakers are no longer made. It also includes fuse boxes and some older breaker panels that home inspectors and insurers routinely flag.
Replacement is often combined with an upgrade — moving from 100 to 200 amps, for example — but it doesn't have to be. If your current service size meets your needs, a like-for-like replacement with modern, reliable equipment may be all you need.
What the work typically involves
A panel replacement is usually completed in a day, though the home is without power for part of it.
Evaluate and size
Confirm the service size, circuit count and future plans to choose the right panel.
Permit and utility coordination
Pull the required permit and arrange any utility disconnect needed for the swap.
Swap the panel
Install the new panel, land each circuit on a correctly sized breaker, and update grounding and bonding.
Label, test and inspect
Label every circuit, test operation and schedule the required inspection.
Common reasons homeowners call
- Fuse box that blows fuses regularly
- Federal Pacific, Zinsco or other flagged panel
- Water intrusion or rust inside the enclosure
- Breakers that are hard to find or no longer made
- Heat damage found during troubleshooting
Signs it is time to call an electrician
- Burning smell or discoloration at the panel
- Breakers that feel loose or won't stay on
- Panel is warm or buzzes under normal load
- Frequent flickering throughout the home
- Evidence of past overheating or melted insulation
Safety considerations
Never a DIY project. Panel replacement involves the service conductors from the utility, which cannot be turned off from inside the house. This is never a DIY job. A replacement should be permitted and inspected so you have documentation for insurance and resale.
What’s reviewed during a replacement
- Service size and meter base condition
- Grounding electrode and water/gas bonding
- Condition of circuit wiring at the panel
- AFCI and GFCI requirements for the new panel
- Working clearance around the panel location
Related electrical problems
Local pages for this service
Related residential services
Electrical Panel Upgrade
Increasing your home's electrical capacity — typically 100A to 200A — for EV chargers, heat pumps, additions and modern loads.
Electrical Panel Services
Repairs, inspections and maintenance for breaker panels — loose connections, damaged breakers, labeling and capacity checks.
Circuit Breaker Replacement
Replacing worn, damaged or incompatible breakers — including AFCI and GFCI breakers — with correctly rated parts.
Surge Protection
Whole-house surge protectors at the panel plus point-of-use protection for electronics and appliances.
Frequently asked questions
Most residential panel swaps are completed in a single day, with power off for several hours. Timing depends on utility coordination and inspection scheduling.
Generally, yes. Panel replacements are typically permitted and inspected by the local building department, and the utility may need to disconnect and reconnect service.
If you're adding an EV charger, heat pump, electric range or other big loads — or plan to — upgrading during replacement is usually more practical than doing it later.
Yes. Replacing a fuse box with a modern breaker panel is a common project, and it's a good time to review grounding and whether any circuits need updating.