Top Emergency Electricians in Ontario, CA, 91743 | Compare & Call

There are 230 electrician companies server in Ontario CA

Empower Building Company

Empower Building Company

★★★★★ 5.0 / 5 (4)
1534 N Madera Ave, Ontario CA 91764
General Contractors, Electricians

Empower Building Company is a licensed general contractor serving Ontario, the Inland Empire, Los Angeles County, and Orange County. With over 20 years of industry experience, our founder leads a pass...

Hostetler Construction

Hostetler Construction

★★★★★ 5.0 / 5 (55)
338 Bixby Way, Upland CA 91786
General Contractors, Electricians, Plumbing

Hostetler Construction is a family-owned and operated business serving Upland, California, for three generations. Founded by my grandfather and continued by my father, I am proud to carry forward a le...

Smart Construction

Smart Construction

★★★★★ 4.9 / 5 (77)
Diamond Bar CA 91765
General Contractors, Electricians

Smart Construction is a bonded and insured General B Contractor serving Diamond Bar, CA, providing reliable electrical and building solutions. We specialize in residential and commercial electrical wo...

1st Choice Electric

1st Choice Electric

★★★★★ 4.8 / 5 (68)
Ontario CA 91762
Electricians

1st Choice Electric brings over 25 years of combined experience from former union electricians who specialize in commercial, industrial, and residential electrical work. Based in Ontario, CA, our team...

GPro Electric

GPro Electric

★★★★★ 5.0 / 5 (4)
Glendora CA 91741
Electricians, Home Energy Auditors

GPro Electric is a trusted, licensed electrical contractor serving Glendora and surrounding communities. We specialize in home energy audits to help you reduce utility bills and improve efficiency, al...

Kakish Electrical Pros

Kakish Electrical Pros

★★★★☆ 4.3 / 5 (4)
Ontario CA 91761
Lighting Fixtures & Equipment, Electricians, Home Theatre Installation

Kakish Electrical Pros is a licensed and bonded electrical service provider in Ontario, CA, with over 18 years of experience across residential, commercial, and industrial projects. Founded by James, ...

Combee Electric

Combee Electric

★☆☆☆☆ 1.0 / 5 (1)
1619 E Holt Blvd, Ontario CA 91761
Electricians

Combee Electric is a trusted, locally-owned electrical contractor serving homes and businesses in Ontario, CA. We specialize in comprehensive electrical inspections designed to identify and prevent th...

411 Service Provider

411 Service Provider

★★★★★ 5.0 / 5 (1)
2314 S Vineyard Ave Ste A, Ontario CA 91761
General Contractors, Electricians, Painters

In Ontario, 411 Service Provider connects local homeowners with reliable, licensed, and insured professionals for their home improvement and electrical needs. We maintain a network of screened general...

Shahtar Electrical Services

Shahtar Electrical Services

★★★★★ 5.0 / 5 (10)
832 Alessandro Ave, La Verne CA 91750
Electricians, Lighting Fixtures & Equipment, Solar Installation

Shahtar Electrical Services is your trusted local electrician in La Verne, CA, offering comprehensive residential and commercial electrical solutions. We specialize in everything from circuit breaker ...

Advanced Water & Power

Advanced Water & Power

★★★★★ 4.6 / 5 (19)
915 W Foothill Blvd Ste C550, Claremont CA 91711
Electricians, Irrigation, Lighting Fixtures & Equipment

Advanced Water & Power has been serving Claremont, CA since 2001, bringing over 20 years of expertise in electrical, irrigation, and home automation services. As a locally-owned business built on word...



Estimated Electrical Service Costs in Ontario, CA

Emergency After-Hours CallEstimated Range
$324 - $439
Electrical Safety InspectionEstimated Range
$144 - $194
EV Charger InstallationEstimated Range
$954 - $1,279
Panel Upgrade (200 Amp)Estimated Range
$3,224 - $4,304
Ceiling Fan InstallationEstimated Range
$284 - $384

Methodology: Estimates are dynamically generated using labor multipliers derived from 2025 BLS OEWS (SOC 47-2111) data for Ontario. Prices include standard parts and labor adjusted for 2026 economic projections.

Questions and Answers

My Ontario home was built in 1979. Why are the lights dimming when I use my air conditioner?

Your home's electrical system is 47 years old. Original NM-B Romex wiring in College Park was sized for the era's smaller loads, not today's high-capacity appliances. A 100-amp panel from 1979 often lacks the physical space and bus bar capacity to safely add modern circuits, leading to voltage drop and tripped breakers under simultaneous demand. Upgrading the service panel is typically the first step to restore stable power.

My home has an underground service line. What does that mean for maintenance or an upgrade?

An underground lateral from SCE means your service entrance is less exposed to weather but requires coordination for an upgrade. The utility owns the cable from the transformer to your meter, while you own the conduit and wiring from the meter to the main panel. Upgrading your panel and service capacity involves a permit, a trench inspection by the city, and a scheduled disconnect/reconnect with SCE to pull new conductors through the existing conduit.

My power went out and I smell something burning near the panel. How fast can an electrician get here?

From the Ontario Convention Center area, our service route via I-10 allows for an 8-12 minute dispatch in College Park. A burning odor indicates an active fault, so shut off the main breaker at the service panel immediately. Do not restore power. We prioritize these calls to prevent potential arc faults from escalating to an electrical fire inside the wall.

My smart TV and lights keep flickering. Is this a problem with Southern California Edison?

While SCE manages the grid, flickering often starts within your home's wiring, especially with older panels under load. Grid instability from seasonal wildfire mitigation or high demand can introduce surges, but internal issues like loose connections at the main lugs are more common. A whole-home surge protector installed at the panel is critical to shield modern electronics from both external surges and internal voltage spikes.

How can I prepare my Ontario home's electrical system for summer brownouts and winter cold snaps?

Summer AC peaks strain an older 100-amp panel, increasing fire risk during brownouts when voltage fluctuates. For winter, ensure outdoor outlets are protected with weatherproof in-use covers and GFCI protection. Installing a transfer switch and a properly sized backup generator, permitted through Ontario Building and Safety, provides reliable power for essentials during extended outages in any season.

We're on the flat valley floor near the Convention Center. Does the terrain affect my home's electrical grounding?

The flat, stable soil in this part of College Park is generally favorable for establishing a low-resistance grounding electrode system. However, over decades, the connection to the ground rods can corrode or loosen, compromising the safety path for fault currents. We test the grounding electrode conductor and bonding during every panel upgrade or inspection to ensure it meets NEC 2023 standards for personal safety and surge dissipation.

I have an old Federal Pacific panel and want to install an EV charger. Is my 100-amp service enough?

No, it's not. A Federal Pacific panel is a known fire hazard due to breakers that can fail to trip, and it must be replaced for basic safety. Even with a new panel, a 100-amp service from 1979 lacks the reserve capacity for a Level 2 EV charger or a modern heat pump. A full service upgrade to 200 amps is the standard, code-compliant solution to power both your home and new high-demand appliances safely.

What permits and codes apply if I need to replace my electrical panel in Ontario?

All panel replacements require a permit from the Ontario Building and Safety Division and must be installed to NEC 2023 standards, which mandates AFCI protection for most living area circuits. The work must be performed by a contractor holding a current C-10 license from the CSLB. As the Master Electrician on record, I handle the permit filings, scheduling inspections, and providing the final certification to ensure the installation is both safe and legally compliant.

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