Electrical Panel Upgrades in San Dimas & Nearby Cities
Left Coast Electric upgrades and replaces residential electrical panels for homeowners in San Dimas, La Verne, Glendora, Diamond Bar and the surrounding San Gabriel and Pomona Valley cities. If your breakers trip, your panel feels warm, or you’re adding an EV charger, heat pump or remodel, we’ll check your service and tell you what your home actually needs.
Call (877) 960-1122 Get a Free Estimate
CA Lic #1105569 · Bonded & Insured · 24/7 Emergency Service · Free Estimates
Panel Upgrades at a Glance
- What we do
- Residential panel replacements and service upgrades, sized from a load calculation
- Where
- San Dimas, La Verne, Glendora, Diamond Bar and nearby San Gabriel and Pomona Valley cities
- Headquarters
- 433 S Cataract Ave, San Dimas, CA 91773
- License
- CA Lic #1105569 · Bonded & Insured
- Permits
- We pull the city permit and schedule the inspection (in San Dimas: City of San Dimas Building and Safety)
- Utility
- Southern California Edison (SCE) coordination when the service changes
- Older panels
- Federal Pacific (FPE) and Zinsco panel replacement
- Phone
- (877) 960-1122 · 24/7 emergency service
Panel Upgrades Close to Home
We’re headquartered in San Dimas, and we’ve done a variety of residential panel upgrades in La Verne, Glendora, San Dimas and Diamond Bar. Many homes here were built long before EV chargers, central air and home offices, and still run on original or undersized panels. We start with an honest look at your existing service and explain the options in plain language before any work begins. See all of our residential electrical services.
Signs Your Panel Needs an Upgrade
- Breakers that trip often, or lights that flicker or dim when appliances start
- A panel that is warm, buzzing, rusted or showing scorch marks
- An older fuse box or a discontinued panel brand with a known safety history
- Extension cords and power strips used as a permanent fix
- No open breaker spaces for new circuits
- Plans to add an EV charger, heat pump, spa, kitchen remodel or room addition
Federal Pacific & Zinsco Panel Replacement
Many older San Gabriel Valley homes still have a Federal Pacific Electric (FPE) or Zinsco panel. Both brands are long discontinued, and both have a well-documented history of breakers that can fail to trip when a circuit overloads. Home inspectors and insurers often flag them during a sale or a policy renewal.
How to tell if you have one
- Federal Pacific: “Federal Pacific Electric” or “FPE” on the panel door or label, and “Stab-Lok” breakers
- Zinsco: “Zinsco” or “Sylvania” on the label, often with thin, multi-colored breaker handles
- Not sure? Send us a photo of the panel label, or we can identify it during a free estimate
We recommend replacing these panels rather than swapping individual breakers. We install a new panel sized for your home, pull the permit, schedule the inspection and coordinate with Southern California Edison if the service needs to change.
Choosing the Right Service Size
- 100A: common in older homes; often too small for EV charging and modern HVAC
- 200A: the most common residential upgrade, with room for today’s full-home loads
- Larger services: for bigger homes, ADUs or several high-draw additions, sized from a load calculation
Not every home needs a bigger service. Sometimes a panel replacement or a few new circuits on the existing service is the right answer, and we’ll tell you when that’s the case.
What a Panel Upgrade Includes
- A load calculation of your existing service and what you plan to add
- Panel replacement or a full service upgrade, sized for your home
- New breakers, with circuits reorganized and balanced
- Grounding and bonding brought up to current code
- Coordination with Southern California Edison when the service changes
- City permit and inspection handled by us
- Clear labeling of every circuit when the job is done
Why Upgrade Your Panel
- Safety: modern breakers lower the risk of overheating and electrical fires
- Capacity: power EV chargers, heat pumps and new appliances without nuisance trips
- Code compliance: work that passes inspection and satisfies insurers and home inspectors
- Room to grow: spare space for future circuits and remodels
Pricing and Service Calls
- Free estimates on residential panel upgrades
- 24/7 emergency electrical service: call (877) 960-1122 any time
- Service calls have a 2-hour minimum with no trip fee
Commercial Panel & Service Upgrades in CA, NV & AZ
Beyond homes in the San Dimas area, Left Coast Electric handles commercial panel and service upgrades for offices, retail, restaurants and industrial facilities across California, Nevada and Arizona. We size new switchgear and distribution from a load calculation, coordinate service changes with the local utility, and handle permits and inspections. In San Dimas, see our commercial electrician services.
CA Lic #1105569 · NV Lic #0095572 · AZ ROC 352637
Cities We Serve for Panel Upgrades
San Dimas (HQ) · La Verne · Glendora · Diamond Bar · Claremont · Covina · Pomona · West Covina · All California service areas →
Panel Upgrade FAQ
How do I know if I need a new panel or just a repair?
We inspect the panel and your current load, then tell you whether a repair, a panel replacement or a full service upgrade makes sense. The estimate is free.
Do I need a panel upgrade for an EV charger?
Not always. Some homes have room for a Level 2 charger on the existing panel. We check the load first; see our EV charger installation page.
Do you pull the permit?
Yes. We pull the permit, schedule the inspection and coordinate with Southern California Edison when needed. More on California electrical permit requirements.
How much does a service call cost?
Estimates for panel upgrades are free. Service calls have a 2-hour minimum with no trip fee.
What if my panel fails after hours?
We offer 24/7 emergency electrical service. Call (877) 960-1122 any time.
Get a Free Panel Upgrade Estimate
Call (877) 960-1122 or request a free estimate.
CA Lic #1105569 · NV Lic #0095572 · AZ ROC 352637 · Bonded & Insured · 433 S Cataract Ave, San Dimas, CA 91773
