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Electrical panel upgrade in Ontario, CA
Most homes in Ontario were wired for a fraction of the load they now carry. Add an EV, a heat pump and an induction range to a 100 amp panel and you run out of capacity long before you run out of ideas. A service upgrade gives you headroom, working space and modern breaker protection.
- 01100 to 200 amp service upgrade
- 02Breaker box replacement
- 03Fuse box removal
- 04Zinsco and Federal Pacific swaps
- 05Sub panel installation
- 06Meter main combos
Electrical Panel Upgrade jobs we take in Ontario
The work below covers the large majority of panel upgrade calls in Ontario and the wider San Bernardino County area.
100 to 200 amp service upgrade
New panel, meter main, grounding and bonding brought up to current code.
Breaker box replacement
Like-for-like swaps when capacity is fine but the equipment is failing or obsolete.
Fuse box removal
Retire the fuses, keep the house wiring, gain real overcurrent protection.
Zinsco and Federal Pacific swaps
Panels with known failure histories replaced with current-listed gear.
Sub panel installation
Feed a garage, ADU, shop or addition without overloading the main.
Meter main combos
Utility-facing equipment replaced along with the service entrance conductors.
Grounding and bonding repair
Ground rods, water bond and neutral separation corrected.
Circuit directory and labeling
A typed, accurate panel schedule at the end of every job.
Electrical Panel Upgrade across Ontario
We cover every part of Ontario — Creekside, downtown Ontario and Ontario Ranch included — along with the neighboring communities of Montclair and Rancho Cucamonga.
Ontario sits in San Bernardino County, and the electrical work here reflects that mix: older housing stock that needs grounding, capacity and device upgrades, alongside newer construction that simply needs more circuits than it was built with. Crews route through the Inland Empire daily, so travel time to a call in Ontario is short.
Electrical Panel Upgrade in nearby cities
What affects panel upgrade pricing in Ontario
| Service size and panel location | A straight swap in the same spot costs far less than relocating the service. |
|---|---|
| Meter and mast condition | Rusted masts, buried service and damaged meter bases add work at the utility side. |
| Grounding and bonding | Older homes often need ground rods and a proper water bond added. |
| Permit and utility coordination | Included in the quote, but the schedule depends on the local inspector and utility. |
Flat price, agreed before we start
You get one number for the whole panel upgrade job in Ontario before any work begins, including parts, permits where required, and cleanup.
How the visit works
You call, we answer
A dispatcher picks up 24 hours a day and gets the details — what is happening, where, and how urgent.
We diagnose before we price
The electrician tests and inspects, then explains what is actually wrong in plain terms.
You approve a flat price
One number for the whole job, agreed before any work starts. No hourly meter.
We do the work and clean up
Parts on the truck for most jobs, permits pulled where required, circuits labeled at the end.
Recent Ontario feedback
Panel had no room left and we wanted an EV charger. Got a straight answer, a flat number, and the whole thing done in a day. The new labels alone were worth it.
Marisol R.Ontario, CABreaker had been tripping for months. They found an overloaded shared circuit and put the microwave on its own. Has not tripped since.
Omar D.Ontario, CAHalf my kitchen went dead and two other people had already guessed at it. These guys traced it to a bad connection in a box behind a cabinet in about forty minutes.
Priya S.Ontario, CAElectrical Panel Upgrade in Ontario — questions we get asked
Do I need a permit for a panel upgrade in Ontario?
Panel and service work is permitted work in California. We pull it, meet the inspector, and handle the utility coordination so the job closes out properly.
How long does a panel upgrade take?
Most Ontario residential upgrades are a one-day job. Power is off for part of that day while the utility disconnects and reconnects, and we schedule that window with you in advance.
Will you fix the labeling?
Every panel we touch leaves with each breaker mapped and labeled. It takes twenty minutes and saves the next electrician an hour.
How much does an electrical panel upgrade cost in Ontario?
In Ontario and the wider San Bernardino County market, a straightforward 200 amp upgrade usually lands in the low-to-mid four figures, with meter relocation, long service runs and mast work pushing it higher. You get one flat number after we look at the service entrance, not a range.
Do I really need 200 amps?
If you are adding EV charging, electric heat, a hot tub or an ADU, yes — and it is far cheaper to do it once. If your loads are modest and the panel is simply old, a same-size replacement may be all you need. We tell you which case you are in.
Other electrical services in Ontario
- Emergency Electrician in Ontario
- EV Charger Installation in Ontario
- Whole House Rewiring in Ontario
- Generator Installation in Ontario
- Lighting Installation in Ontario
- Electrical Repair & Troubleshooting in Ontario
- Outlet & Switch Installation in Ontario
- Commercial Electrician in Ontario
- Smart Home Wiring in Ontario
See all electrician services in Ontario
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Ready to book panel upgrade in Ontario?
Open 24 hours, 7 days a week. Flat pricing agreed before work starts.