Expert Electrician Services in Ontario, California
Ontario homes mix century-old Craftsman bungalows with brand-new Ontario Ranch builds, and both need electrical work done right. Electrical Service Precision Pros serves every corner of Ontario with careful, code-conscious electrical service. Call (833) 606-5080 to schedule your visit in Ontario.
(833) 606-5080Content last reviewed September 29, 2026
Trusted Electrician Service in Ontario, California
Ontario sits at the heart of the Inland Empire, and its homes tell the story of a century of growth. Along Euclid Avenue and through the College Park Historic District, you'll find Craftsman, Mediterranean, and Spanish-style houses built between the 1920s and 1960s, many with their original electrical bones still in the walls. Meanwhile, neighborhoods like Creekside and the sprawling new Ontario Ranch development feature modern construction with today's wiring standards. Electrical Service Precision Pros works across that entire range, bringing the same careful attention to a historic bungalow near downtown as to a new build on the city's southern edge.
Older Ontario homes come with electrical quirks that newer construction simply doesn't have. We regularly find aging fuse boxes that were never converted to breaker panels, cloth-wrapped wiring that has grown brittle with decades of summer heat, and garages or back houses wired with whatever was on hand at the time. Even well-kept 1950s ranch homes often run their entire air conditioning load through panels that were sized when window units were a luxury. Our electricians know how to read these older systems and bring them up to a safe, reliable standard without tearing apart what makes these homes special.
Newer Ontario neighborhoods have their own demands. Ontario Ranch and other recent developments bring larger homes with dual-zone air conditioning, home offices full of electronics, and increasingly, electric vehicles in the garage. We install dedicated EV charging circuits, add capacity for workshop equipment, and wire additions so they integrate cleanly with the original panel. When a family outgrows their electrical service, we handle panel upgrades that leave room for what comes next.
From quick repairs to full-home rewiring, our Ontario services cover the work most households actually need. That includes troubleshooting flickering lights and dead outlets, replacing worn switches and receptacles, upgrading panels to 200-amp service, running new circuits for kitchens and laundry rooms, installing indoor and outdoor lighting, and adding whole-home surge protection. We also perform detailed electrical safety inspections that give buyers, sellers, and longtime owners a clear picture of where their system stands.
Every job starts with a straightforward conversation about what you need and what it will take. We'll explain your options in plain language, coordinate any required permits with the city, and leave your home as tidy as we found it. If your Ontario home is showing signs of electrical trouble, or you simply want to know where your system stands, call (833) 606-5080 and talk with a local electrician who knows these neighborhoods.

Who We Are in Ontario
Local electricians who know Inland Empire homes
- •We show up when we say we will, with the tools and parts to finish the job.
- •We explain what we find in plain language before any work begins.
- •We respect older homes, preserving plaster and trim instead of cutting corners.
- •We pull permits when the job calls for them and coordinate inspections properly.
- •We clean up after ourselves, every one appointment, no exceptions.
- •We back our workmanship, and if anything we installed needs attention, we'll come back and make it right.
Professional Electrician Services in Ontario, California
Trusted Electrician solutions for residential and commercial properties, with clear communication and careful work.

Ceiling Fan Installation Near Me
Starting at: Call for pricing
A ceiling fan can make a room feel noticeably cooler without touching the thermostat — but only if it's mounted to a fan-rated box and wired correctly. Electrical Service Precision Pros installs and replaces ceiling fans with proper bracing, balanced blades, and the right controls, including remote and wall-switch options. If your current fan wobbles or hums, we can fix that too.
- Installation on fan-rated boxes with proper ceiling bracing
- Wiring for separate fan and light control
- Remote, wall-switch, and smart control options

Circuit Breaker Repair & Replacement Near Me
Starting at: Call for pricing
A breaker that trips now and then is doing its job — one that trips weekly, buzzes, or smells hot is telling you something is wrong. Electrical Service Precision Pros diagnoses whether the problem is a failing breaker, an overloaded circuit, or a deeper wiring issue, then repairs or replaces only what actually needs it. You get a straight answer and a panel you can trust again.
- Diagnosis of chronic tripping, buzzing, or overheating breakers
- Replacement of worn, damaged, or recalled breakers
- Dedicated circuits added for overloaded rooms and appliances

Electrical Panel Upgrades Near Me
Starting at: Call for pricing
Electrical Service Precision Pros upgrades and replaces electrical panels so your home can safely handle the power you use today. If your breakers trip often, your panel is outdated, or you are adding big loads like an EV charger, we will inspect it and explain your options plainly.
- Full panel inspection that checks breakers, bus bars, wiring, and grounding before any work starts
- Panel replacement sized to your real electrical load, not a guess
- New breakers and clearly labeled circuits so you know what controls what

Electrical Safety Inspections Near Me
Starting at: Call for pricing
Most electrical problems announce themselves quietly — a warm outlet here, a flickering light there — until they don't. A safety inspection from Electrical Service Precision Pros checks your panel, wiring, outlets, grounding, and smoke/CO detectors against current code, and gives you a plain-language report of what's fine, what to watch, and what needs attention now. Ideal before buying, selling, or renovating.
- Full panel inspection: breakers, labeling, corrosion, and capacity
- Outlet and switch testing including GFCI/AFCI function
- Grounding and bonding verification

EV Charger Installation Near Me
Starting at: Call for pricing
Charging at home beats hunting for a public station every week. Electrical Service Precision Pros installs dedicated Level 2 EV chargers wired straight to your panel, sized for your car and your daily driving. Call (833) 606-5080 and we will set up home charging that fits your routine.
- Level 2 (240-volt) home charger installation
- Panel load calculation before we size the circuit
- Dedicated circuit run from panel to charger location

Generator Installation Near Me
Starting at: Call for pricing
When the power goes out, a standby generator keeps your home running without you lifting a finger. Electrical Service Precision Pros installs whole-home generators that start on their own the moment the grid drops. Call (833) 606-5080 to find the right size for your home.
- Whole-home standby generator installation
- Automatic transfer switch wired to your panel
- Generator sizing based on your actual loads

Lighting Installation Near Me
Starting at: Call for pricing
Good lighting changes how a home feels and how it works. Electrical Service Precision Pros installs recessed lights, pendants, under-cabinet lighting, dimmers, and smart switches — wired cleanly and safely to code. If you're switching the whole house to LED, we help you pick fixtures that actually flatter each room.
- Recessed, pendant, track, and under-cabinet lighting installation
- Dimmer switches and multi-location (3-way and 4-way) controls
- Full LED conversions that cut lighting energy use

Outlet & Switch Installation Near Me
Starting at: Call for pricing
Two-prong outlets, dead outlets, switches that spark — small annoyances that usually point to something worth fixing. Electrical Service Precision Pros adds, replaces, and relocates outlets and switches, upgrades kitchens and baths to GFCI protection, and installs USB combo outlets where you charge everything. Every device is wired to code and tested before we leave.
- New outlet and switch installation anywhere you need them
- GFCI protection for kitchens, bathrooms, garages, and outdoors
- AFCI protection for bedrooms and living areas where required

Smart Home Automation Near Me
Starting at: Call for pricing
Smart home tech is only smart when it's installed right — neutral wires where they need to be, strong coverage where it counts, and everything talking to one app instead of six. Electrical Service Precision Pros installs smart switches, thermostats, doorbells, locks, and voice-controlled lighting, wired and configured to work together. Already have a box of gadgets that won't cooperate? We sort that out too.
- Smart switches, dimmers, and outlets with proper neutral wiring
- Video doorbells, smart locks, and security camera wiring
- Smart thermostats installed and configured

Smoke & CO Detector Installation Near Me
Starting at: Call for pricing
Detectors only save lives when they are in the right spots, wired together, and not past their prime. Electrical Service Precision Pros installs interconnected smoke and carbon monoxide detectors so the whole house hears the alarm. Call (833) 606-5080 to bring your home's detection up to date.
- Interconnected smoke and CO detector installation
- Hardwired units with battery backup
- Placement planned for bedrooms, halls, and living areas

Whole House Rewiring Near Me
Starting at: Call for pricing
Homes wired decades ago with aluminum wiring, knob-and-tube, or brittle cloth-insulated cable weren't built for today's electrical loads. Whole-house rewiring from Electrical Service Precision Pros replaces aging wiring with modern copper, adds grounded outlets where you need them, and brings the entire system up to current code. We plan the work room by room to keep disruption — and drywall repair — to a minimum.
- Replacement of aluminum, knob-and-tube, and cloth-insulated wiring
- New grounded outlets and dedicated circuits throughout
- Code-compliant panel, grounding, and bonding upgrades

Whole House Surge Protection Near Me
Starting at: Call for pricing
Power surges do not just come from lightning — everyday grid switching sends small spikes through your wiring. Electrical Service Precision Pros installs whole-house surge protectors at your electrical panel to shield everything downstream. Call (833) 606-5080 to add a layer of protection to your home.
- Whole-house surge protector installed at the main panel
- Point-of-use protector options for sensitive electronics
- Grounding system check during the visit

Practical reasons your neighbors keep our number
Common Electrical Problems in Ontario Homes
Outdated panels in pre-1970 homes
Many Ontario bungalows and ranch houses still run on 60-amp or 100-amp panels installed decades ago, sometimes with fuse boxes that predate breakers entirely. These panels can't safely carry modern air conditioning, kitchen appliances, and electronics at the same time, which leads to tripped breakers, warm panel covers, and in some cases, overheated wiring. We evaluate the panel's age, capacity, and condition, then recommend an upgrade path that fits the home and the household's actual electrical load.
Brittle cloth-insulated wiring
Homes built before the 1960s often contain cloth-wrapped conductors whose insulation has dried and cracked after decades of Inland Empire heat. Exposed conductors in attics and wall cavities are a genuine fire risk, especially where insulation or stored boxes press against them. Our electricians map out where this wiring runs, replace it with modern copper, and make sure splices are housed in proper junction boxes rather than buried in walls.
Air conditioning overloads
Ontario summers push air conditioners hard, and older electrical services feel every bit of it. When the AC compressor kicks on and the lights dim, that's the system telling you it's near its limit. Undersized circuits and aging breakers can fail to trip when they should, letting wires overheat. We check conductor sizing, breaker ratings, and panel capacity, then add dedicated circuits or upgrade service so cooling runs safely through the hottest months.
Ungrounded outlets and two-prong receptacles
Two-prong outlets are still common in Ontario's older neighborhoods, and they're a sign the home's grounding system predates modern safety standards. Without a ground path, surge protectors can't do their job and fault currents have nowhere safe to go. We test grounding throughout the home and convert receptacles properly, running new grounded circuits where needed rather than just swapping in three-prong outlets that look safe but aren't.
DIY and unpermitted additions
Detached garages, converted patios, and back-house additions around Ontario sometimes carry wiring that was never inspected. We've found extension-cord splices inside walls, overloaded subpanels, and outdoor circuits with no weatherproof protection. Our inspections identify these hazards, and we rewire additions to proper standards with permits and inspections where required.
Flickering lights and intermittent power
Loose connections at receptacles, aging switches, or a failing breaker can cause lights to flicker and power to cut out unpredictably. In Ontario's older homes, aluminum-era splices and corroded terminals are frequent culprits. We trace the circuit, tighten or replace failing connections, and verify the fix holds under load so the problem stays solved.
Missing or failed GFCI protection
Kitchens, bathrooms, garages, and outdoor outlets in older Ontario homes often lack ground-fault protection entirely, or have early GFCI devices that no longer trip when tested. In wet locations, that missing protection is a genuine shock hazard. We test every GFCI in the home, replace failed units, and add protection where the original wiring never had it, bringing these high-risk areas up to modern safety expectations.
Outdated smoke and CO alarm coverage
Many Ontario homes, especially the older ones in the historic districts, still rely on a few aging battery-powered alarms where current expectations call for interconnected detection on every level and in each bedroom. We map your home's coverage during inspections and install hardwired, interconnected smoke and carbon monoxide alarms with battery backup, so an alarm in the garage wakes the whole household.
How Our Ontario Electrical Service Works
Call and describe the issue in Ontario.
Reach us at (833) 606-5080 and tell us what's happening in your own words. We'll ask a few practical questions about the age of your home, the symptoms you're seeing, and anything you've already tried, then set a visit time that works for you.
On-site inspection and diagnosis
Our electrician arrives on schedule, looks at the panel, the affected circuits, and the areas involved, and tests the system to find the real cause. We check for safety issues beyond the immediate complaint, because electrical problems in older homes often travel in groups.
Clear explanation and plan
Before any work begins, we walk you through what we found, lay out your repair or upgrade options, and explain the trade-offs in plain language. You'll understand exactly what we're proposing and why, with time to ask questions.
Careful, code-conscious work
We complete the agreed work with proper materials and techniques, pulling permits and coordinating inspections whenever the scope requires them. We protect your floors and furnishings, keep the work area contained, and test everything before we call it done.
Walkthrough and follow-up
We show you what was done, demonstrate any new equipment like breakers or EV chargers, and answer questions about maintaining your system. If anything doesn't feel right afterward, call us and we'll come back to make it right.
What to Expect Working With Us
"Our 1940s bungalow had two-prong outlets everywhere and a panel that buzzed when the AC ran. They walked me through the whole upgrade, kept the plaster intact, pulled the permits, and now everything just works. I finally feel safe running the house."
"Needed a dedicated circuit for an EV charger and a panel with room to grow. They showed up on time, did clean work in the garage, coordinated the inspection, and explained how the charger circuit was set up. Straightforward from start to finish."
"Lights were flickering in half the house and two other companies couldn't find it. Their electrician traced it to a failing connection in the panel and fixed it during the visit, then tested every circuit before leaving. No drama, just competent work."
"They inspected a rental with aluminum-era wiring and gave me a prioritized list of what needed attention first. Honest about what could wait and what couldn't. I'll be using them for the rest of my properties."
Our Ontario Service Area
We serve homes and small businesses throughout Ontario, California, across the ZIP codes 91758, 91761, 91762, and 91764. That coverage reaches the historic neighborhoods around downtown and the Euclid Avenue corridor, where 1920s Craftsman and Spanish-style homes often need panel upgrades and rewiring. It includes the established residential streets of central Ontario and the College Park area, home to many postwar ranch houses with aging electrical services. We also cover the Creekside neighborhoods and the growing Ontario Ranch communities to the south, where newer homes need EV chargers, added circuits, and lighting upgrades. Our electricians are in these neighborhoods every week, so scheduling is straightforward. Whether your home still has its original fuse box or you just need a dedicated circuit for new equipment, we're already working nearby and ready to help. If your ZIP isn't listed above, call (833) 606-5080 and we'll verify coverage for your Ontario address.
Service Areas by ZIP Code
We provide professional Electrician services in the following ZIP codes
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Frequently Asked Questions

Electrician Service Area in Ontario, California
We provide fast and reliable Electrician services throughout Ontario and surrounding areas. Call us about emergency repairs and installations and we will explain the next steps.
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