Our Services
Electrical Panel Installation, Repair & Replacement
Honest pricing and licensed C-10 work — tell us what you need and we’ll follow up with a clear estimate.
Electrical Panel
Your panel is where all the building's power comes together. Every circuit, every outlet, every light runs back to it. So when it starts to fail, the whole place feels it. Breakers that won't stay set. Lights that dip when the dryer turns on. A cover that's warm when you touch it.
Frank Chiavarini has worked on breaker boxes and service panels since 1981, right out of Glendora. He's a California C-10 licensed electrical contractor (California license #415324), and you can verify it with the California Contractors State License Board (CSLB) at cslb.ca.gov. We pull a permit for every job and finish to code. No shortcuts on the one part of your electrical system that everything else depends on.
What's Included
What's Included in Our Electrical Panel Service
Here's the work we take on for homes and businesses.
New electrical panel installation
Adding an EV charger, a new AC unit, or a room? Your existing service may not have the capacity. We handle electrical panel installation in Glendora for new construction, additions, and homes finally moving off a tired old load center. You get the right amperage for how you actually live, not a guess.
Electrical panel repair
Not every issue means you need a whole new panel. Sometimes it's something simple like a loose connection, a faulty breaker, or a damaged wire that just needs fixing. Frank does electrical panel repair with honesty. He checks everything to find the real problem, tells you if the fix will last, and won't push you to buy a new panel you don't need.
Full panel replacement
Some panels can't be fixed. If yours is rusted, too small, or on a recall list, replacing it is the best option. We take care of electrical panel replacement in Glendora, from getting the permit to the final check.
Breaker & switchboard repair
Breakers can go bad, and so can the bars and lugs inside them. We do electrical breaker repair and switchboard repair in Arcadia, CA, for older homes and businesses. If your breaker keeps tripping right after you turn it back on, it's a sign something is wrong. We find out what it is.
Commercial electrical panel installation
Power is essential for business operations, and downtime costs money. We install commercial electrical panels in Diamond Bar and the valley, sized for the load and wired for inspection: shops, offices, light manufacturing. If your building trips the main every busy afternoon, it's time to take a second look.
Frequent breaker trips
One trip is accidental. If the same breaker trips repeatedly, the circuit or panel can't keep up. That won't fix itself.
Burning smell or scorch marks near the panel
Cut it out. Turn it off, call. That's a fire hazard you don't sleep on.
Flickering lights across the home
A flickering lamp is a bulb. If something comes on and lights start dimming all over the house, it's usually something at the main.
The panel is outdated
A fuse box or a 60-amp service in 1965 was OK. Today it is living on borrowed time. Most can't safely support a modern home. If you have either, it's time to act.
How It Works
Our Electrical Panel Process
We keep it simple. We keep you in the loop.
Inspection
Frank looks at the panel, the service size, and how your home actually uses power.
Diagnosis and options
You hear what's wrong in plain English, your choices, and an upfront price. Repair or replace? You decide.
Permit and installation
We get the right permit before we start. That's a big deal in stricter cities. For example, a permit for a new electric panel in the City of Arcadia has its own steps, and we handle them for you.
Final inspection and testing
We test everything, make sure it passes, and don't leave until it's safe.
Why Us
Why Choose Us for Electrical Panel Work
Licensed work, clear communication, and the job done right the first time — here's what that looks like with us.
40+ years, price up front
You're hiring a licensed electrician who has been doing this for 40 + years, not a crew you will never see again. You'll see the price up front, so you know it before any work is done.
Frank still does the work himself
Frank has been working on residential and commercial panels since 1981, and he still does the work with his own hands. His Yelp reviews do, too. People remember the guy who was on time, did the panel himself and didn't pass them off. That's the whole thing, and it's why it's lasted.
Service Area
Electrical Panel Services Near You
Based in Glendora since 1981 — serving homes and businesses across the San Gabriel Valley and nearby cities.
Glendora, in Los Angeles County, is home base, but we cover a good stretch of the San Gabriel Valley.
Panel repair keeps us busy right here in Glendora. In Upland, most of our calls are for electrical panel replacement, usually for older homes finally upgrading their service. In Diamond Bar, it's mostly commercial work and businesses that need more capacity.
In Arcadia, we do a lot of breaker, switchboard, and panel repairs on homes wired back in the day.
Not sure you're in range? Just call and ask.
Not sure you're in range? Call and we'll confirm.
(626) 914-4000FAQs
Frequently Asked Questions
Straight answers about pricing, what to expect, and how we handle the job.
How do I know if I need a new electrical panel?
A few telltale signs. Breakers tripping all the time. The panel is warm or buzzing. Fuse box. Service of only 60 amps. If any of the above sounds familiar, book an inspection, and we'll tell you straight up if it needs replacing.
How much does electrical panel replacement cost?
It depends on your service size, the panel you are moving to, and what permit your city requires. A simple swap and an entire upgrade to 200-amp are not the same thing. We inspect first and give you a firm price before we touch anything.
Do you install commercial electrical panels in Diamond Bar?
Yes. We install and upgrade commercial panels all over the valley and Diamond Bar, sized to your building's load and finished to pass inspection.
How long does a panel installation take?
Most residential jobs are done in one day, sometimes with a short power-off window while we make the swap. Larger commercial work can run longer. Before we get started, here's what you can expect.
Ready to Get It Looked At?
Call (626) 914-4000 to speak with Frank directly, or email frank@glendoraelectrician.com.
