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Residential home exterior lit at dusk in O'Fallon, Missouri
St. Charles County service area

Electrician in
O'Fallon, MO

APEX Electric is based in O'Fallon, which means the shortest response time we offer anywhere is right here. We cover residential service across 63366 and 63368 and commercial work throughout the city's business corridors.

Electrical work in
O'Fallon.

O'Fallon's housing stock spans a wide range, and the electrical needs split along those lines. Homes built through the 1970s and 80s in the older neighbourhoods near Main Street commonly still run 100-amp services with original panels, and they are the ones where a load calculation matters most before adding an EV charger or finishing a basement. The newer subdivisions out toward WingHaven and Dardenne Prairie were built with 200-amp services, and the work there is more often about adding capacity for what the builder left out — a garage circuit, a hot tub, a workshop.

On the commercial side, the corridor along Highway K and the WingHaven business district keep us busy with tenant build-outs, lighting retrofits and service upgrades. We schedule occupied-building work after hours as a matter of course, because a retail bay or a medical suite cannot lose a trading day to an electrical panel.

Permitting runs through the City of O'Fallon, and we meet the inspector ourselves. Being local means we know how that office schedules and what it wants to see, which is usually the difference between one inspection and two.

O'Fallon, MO at a glance

From our shop
Home base
ZIP codes
63366, 63368

Areas we cover

  • WingHaven
  • Bryan Road corridor
  • Highway K
  • Old Town O'Fallon
  • Twin Chimneys
  • Rabbit Run
(660) 342-5886
Residential in O'Fallon

Home electrical
in O'Fallon.

Everything we do for homeowners across O'Fallon, MO — quoted at a fixed price, permitted where the code requires it.

Electrician working inside an electrical service panel

Panel Upgrades & Rewiring

200-amp service upgrades, fuse box replacement and whole-home rewiring, permitted and inspected.

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Electric vehicle plugged into a home charging connector

EV Charger Installation

Level 2 home charging installed on a dedicated circuit, sized by a real load calculation.

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Modern home at dusk with interior lighting on

Standby Generators

Automatic standby generators and transfer switches so the house rides through an outage.

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Commercial in O'Fallon

Business electrical
in O'Fallon.

Build-outs, retrofits and maintenance for O'Fallon facilities, scheduled around your trading hours.

Commercial building corridor with modern overhead lighting

LED Lighting Retrofits

LED retrofits for offices, warehouses and parking lots, with the rebate paperwork handled.

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Robotic arms on an automated manufacturing line

Industrial & Automation

Power distribution, motor controls, VFDs and PLC integration for plants and logistics.

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Questions

O'Fallon
questions.

What people in O'Fallon, MO ask us before booking.

No. O'Fallon is inside our standard service area — it is where we are based. Estimates are free and there is no travel surcharge.

For genuine emergencies — burning smells, sparking, a dead service — we aim for same-day and keep after-hours availability. Planned work such as a panel upgrade or an EV charger is usually scheduled within the week.

Yes. The electrical permit is pulled with the local authority having jurisdiction and we meet the inspector ourselves. Being local means we know how each office schedules and what it expects to see.

Yes. Residential work is scheduled around your household with a fixed quote up front; commercial work is scheduled around your trading hours, generally after hours, and delivered against your occupancy date.

We cover 63366, 63368 and the surrounding St. Charles County area. If you are just outside, call anyway — the boundary is not rigid.

Need an electrician in O'Fallon?

Free estimates across O'Fallon, MO. Tell us what is going on and we will tell you what it needs and what it costs.

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Book an electrician in O'Fallon

Send the details of your O'Fallon job and we will come back the same business day.

Call us(660) 342-5886
Office
105 Hawks Haven Dr.O'Fallon, MO 63368By appointment — we come to you for estimates.
Hours
Monday – Friday7:00 AM – 6:00 PMSaturdayBy appointmentEmergency service24 / 7
Emergencies
Burning smell, sparking, a dead service or water near electrical equipment — call the main number any hour.
Service area
O'Fallon · St. Charles · St. Peters · Wentzville · Lake Saint Louis · Cottleville · Dardenne Prairie · Chesterfield
Get in touch

Call or email us

The fastest way to get an estimate is a phone call. Tell us what is going on and we will tell you what it needs, what it costs and when we can be there.

Helpful to include

  • What is happening, and roughly when it started
  • Home or business, and the town
  • A photo of the panel or the problem
  • When you are usually available
Monday – Friday: 7:00 AM – 6:00 PM. Emergency service available 24/7 — call the main number any hour.

Would rather just talk to someone? Call (660) 342-5886 — for anything urgent that is the fastest route.