St. Charles County

Electricians in O'Fallon, MO

MO License #20250016884.9 Star Average. 410+ Reviews.Cottleville, MO Office

Book a free estimate Call (636) 240-2966

O'Fallon's newer subdivisions mostly have 200-amp service, while homes in the older neighborhoods closer to downtown can still be on 100 or 150 amps with their original panels. We work all over O'Fallon, including around Fort Zumwalt Park and Ozzie Smith Sports Complex.

Most Booked Here

Popular Services in O'Fallon

Problem Solver

Electrical Problem Solver

Pick what you're noticing. We'll tell you what it usually means, how urgent it is, and what fixes it.

Safety first

Burning Smell, Scorch Marks or Sparks

A burning or hot-plastic smell from an outlet, switch or the panel usually means wiring or a connection is overheating.

If you see smoke, sparks or flames, get everyone out and call 911. If it is safe to reach, switch off the affected breaker or the main. First Choice Electric is not an emergency service; once the area is safe, book a repair visit and we will find and fix the cause.

Burnt and melted wiring inside an outdoor service box in St. Charles — Heat damage inside an outdoor service box in St. Charles, MO. The whole service was replaced.

Common causes

Loose or overheated connection
Overloaded circuit
Failing breaker or panel bus
Damaged wiring inside a wall

Recommended services

Electrical troubleshooting Panel replacement

How to tell if your panel needs replacing

Book a repair visit About electrical troubleshooting

Safety first

Outlets or Switches Warm to the Touch

Outlets and switches should not feel warm. Heat points to a loose connection, an overloaded device or, in some 1960s-70s homes, aluminum branch wiring.

Stop using the outlet and unplug what is on it. If you see smoke or scorching, call 911. Then book a visit; do not keep using a hot device.

Before: a burnt receptacle found behind the cover plate in Overland, MO.

Common causes

Loose terminal connection
Worn-out receptacle
Aluminum wiring at the device
Too much load on one circuit

Recommended services

Outlets & switches Aluminum wiring repair

7 DIY wiring mistakes to avoid

Book a repair visit About outlets & switches

Get it checked soon

A Breaker Keeps Tripping

A breaker that trips again and again is doing its job: something on that circuit is drawing too much power, shorting or faulting to ground.

Before: a breaker melted by overheating in a St. Charles, MO panel.

Common causes

Overloaded circuit
Short circuit
Ground fault
A worn-out breaker

Recommended services

Electrical troubleshooting Panel upgrades

Circuit breaker keeps tripping? Causes and fixes

Book a visit About electrical troubleshooting

Get it checked soon

Lights Flicker or Dim

One flickering fixture is often a bulb or a loose connection. Lights that dim across the house when something starts up point to a service or panel that is near its limit.

After: recessed lighting across a finished basement in St. Peters, MO.

Common causes

Loose connection at a fixture or switch
Heavy loads starting on a shared circuit
Undersized service
Utility-side issue

Recommended services

Electrical troubleshooting Service upgrades

7 signs your home needs a panel upgrade

Book a visit About electrical troubleshooting

Get it checked soon

Federal Pacific, Zinsco, Pushmatic or Challenger Panel

These panel brands have known reliability problems, and many insurers and home inspectors flag them. Most are now decades past their design life.

Before: the old panel in St. Peters, MO.

Common causes

Breakers that may not trip under overload
Worn bus bars and connections
No replacement parts

Recommended services

Panel replacement Electrical troubleshooting

Book a visit About panel replacement

Plan an upgrade

Power Outages Leave You Stranded

If storms or grid outages keep taking out heat, sump pumps or medical equipment, backup power can keep the essentials running.

Old meter socket with corroded lugs on a St. Charles house — Before: corroded lugs inside an old meter socket in St. Charles, MO.

Common causes

Storm-prone service area
Critical loads like sump pumps
Working from home

Recommended services

Home battery backup Standby generators Surge protection

Book a visit About home battery backup

Plan an upgrade

Older Home, Original Wiring

Homes from the 1970s and earlier can have ungrounded circuits, cloth-insulated wire or aluminum branch wiring that was never meant for today's loads.

Aluminum branch wiring remediation under way in Ballwin, MO: device-by-device connections made safe.

Common causes

Ungrounded two-prong circuits
Aluminum branch wiring
Deteriorated insulation
Past amateur work

Recommended services

Whole-home rewiring Aluminum wiring repair Code corrections

GFCI outlets explained

Book a visit About whole-home rewiring

Plan an upgrade

Adding an EV Charger

A Level 2 charger needs a dedicated 240-volt circuit. Whether your panel can carry it depends on your service size and what else is already on it.

After: Level 2 EV charger on its own circuit in an Affton, MO garage.

Common causes

Panel capacity
Distance from the panel to the garage
Other large loads (HVAC, range, dryer)

Recommended services

EV charger installation Panel upgrades

EV charging at home: the complete guide

Book a visit About EV charger installation

Verified Reviews

What Homeowners Are Saying

Recent reviews from our customers.

Michael L.

google

“Sam and his assistant diagnosed an issue with non working light and fan switches. They were polite and did conscientious work as always”

11/10/2026

Dan W.

google

“The guys did a great job and the estimate was fair. I would definitely use them again in the future.”

11/01/2026

Miranda C.

google

“Excellent service throughout the experience. A painless and fast estimate appointment, straightforward pricing, and quick completion. I needed a repair to the conduit for my meter, and they coordinated with my utility company and got it fixed very quickly.”

10/21/2026

4.9 Star Average. 410+ Reviews.

Read all reviews

Recent Work

Our Work in O'Fallon

Nearby

We Also Work Near O'Fallon

O'Fallon ZIP codes: 63366, 63368

All St. Charles County cities

Service area + officeMon-Fri · 8:00 AM - 4:00 PM

Licensed Electricians Across St. Charles & St. Louis Counties

Flat-rate pricing before work begins, from an office in Cottleville.

PrimaryAlso served

First Choice Electric

5377 State Route N. Suite 437, Cottleville, MO 63304

Mon-Fri 8:00 AM - 4:00 PM

(636) 240-2966

Book a visit Service areas

FAQ

O'Fallon Electrician Questions

Do you provide electrical services in O'Fallon?

Yes! First Choice Electric proudly serves O'Fallon and all of St. Charles County. Our licensed electricians provide residential and commercial electrical services including home battery backup, electrical panel upgrades, and ev charger installation. Call (636) 240-2966 for a free estimate.

How much does an electrician cost in O'Fallon?

Electrical service costs in O'Fallon vary by project. We provide free, detailed estimates with exact pricing before any work begins, with no surprises. Our flat-rate pricing means you know the cost upfront, not after the job is done.

What electrical services do you offer in O'Fallon?

In O'Fallon, we offer a full range of electrical services: panel upgrades, EV charger installation, lighting and ceiling fans, outlet and switch installation, whole-home generators, troubleshooting, rewiring, and more. Both residential and commercial properties.

Are you licensed to do electrical work in St. Charles County?

Yes. First Choice Electric holds a Missouri State Electrical License, St. Charles County Electrical License, and St. Louis County Electrical License. We're fully licensed, bonded, and insured to perform electrical work throughout the St. Louis metro area.

Need an electrician in O'Fallon?

Free on-site estimate, and a flat price before any work begins.

Book a free estimate Call (636) 240-2966

Most estimates booked within 1-3 business days.