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Audio/Video Wiring
A neutral in the box decides which switches are even possible. Low voltage is still wiring. Done well it is invisible; done poorly it is a wall full of cable nobody can trace.
Audio/Video Wiring in O’Fallon and across St. Charles, St. Louis, Lincoln and Warren counties.
No dispatcher and no commissioned salesman. Seventeen years in the trade, four of them on his own.
5.0 from 94 Google reviews · BBB A+ since 2022
What this work actually involves
Devices are wired to work when the internet does not, because a doorbell that needs a cloud is a doorbell that fails.
Clint measures before he quotes. The reading comes first, then what it means, then the one repair that solves it. If the honest answer is smaller than what you called about, that is the answer you get, even when the bigger job pays better.
Work that needs a permit gets one, and work that needs an inspection is left ready for it. One person does the diagnosis and the repair, so nothing is lost between a salesman and a technician.
When people call about this
- Smart switches that drop offline
- A doorbell with no transformer
- Cameras on extension cords
- A remodel wanting structured wiring
Why people choose Clint for it
One person does the diagnosis and the repair, so nothing is lost between a salesman and a technician, and nobody is paid to sell past the finding.
Seventeen years in the trade, four of them running his own shop, 5.0 from 94 Google reviews, and an A+ BBB accreditation held since 2022.
Where this is done
A roughly fifty mile working radius from O’Fallon, covering thirty municipalities across five jurisdictions in the St. Louis metro.
See the full service area, or the rest of our smart home & low voltage work.
What still works when the internet is down
A device with local control keeps switching when the connection drops. A cloud-only device becomes a wall plate, and the people who find that out during an outage are never pleased.
That is worth deciding before anything is bought. The install is the same either way; the behaviour when it matters is not.
Box depth, which nobody checks until it is too late
Smart devices are deeper and bulkier than what they replace, and the existing box is frequently too shallow once the conductors are folded back in. Forcing it is how terminations get stressed.
Depth and box fill get checked first, and where a box is too small the honest answer is a deeper box rather than a device crammed in.

Speaker and signal runs
In-wall and in-ceiling runs get pulled before drywall, sized for the distance, and labeled at the equipment end. Nothing about the install is visible afterwards, which is why the labeling matters.
Signal is kept away from parallel power runs, and volume controls or keypads get boxes at rough-in rather than retrofit cuts.
What is worth automating and what is not
Lights on a schedule, a thermostat that knows when the house is empty, and a lock you can check from elsewhere all earn their keep. Novelty devices get used for a month.
Deciding that before the wiring is planned keeps the install small and the result something that is still in use in three years.
Who actually does the work
Clint Ehman does the diagnosis and the repair himself. There is no salesman writing a scope for a technician to execute, and nobody paid on what the visit totals.
Seventeen years in the trade, four of them running his own shop out of O’Fallon, licensed, bonded and insured with workers compensation coverage, 5.0 from 94 Google reviews, and A+ BBB accreditation held since 2022.
“Clint did an excellent job installing two bathroom exhaust fans. He installed high-quality fans that were far superior to the ones I had purchased from a big box store. I highly recommend his services.”
David Hinners · Google review
How the visit goes
- The call
Which device, which wall, and what it needs to do when the internet is down.
- The measurement
Whether the box has a neutral and the depth for the device, what the existing load is, and the signal at that wall.
- The finding
Which devices will actually work there. Sometimes the answer is a different device, sometimes a transformer, sometimes a new run.
- The work
Wired for local control, runs labeled at both ends, tested on your network rather than at the wall.
What the job includes
- Checking the box for a neutral and for depth before anything is ordered
- Devices wired so they work when the internet does not
- Runs labeled at both ends and documented
- Transformers where an older house lacks one
- Low-voltage terminated in a panel, not a knot
- Testing on the actual network, not just at the wall
What it does not
- Ongoing app and account support
- Internet service and router configuration
- Subscription cameras we have not installed
Work that is not electrical gets a referral, not a quote. See the work itself, or send the details.
Related smart home & low voltage work
Audio/Video Wiring across the metro
Five jurisdictions, five different sets of conditions. Clint works out of O’Fallon across five jurisdictions, and the same service means different work in each.
St. Charles County
Out here the panels are not old, they are full. Houses built through the 1990s and 2000s got services sized for the loads of their decade, and the loads have since changed.
St. Louis County
Dozens of municipalities, each with its own occupancy inspection and its own thresholds. Knowing which authority has the address matters as much as knowing the house.
St. Louis City
Much of this stock is two and four family, which means shared services and panels that are rarely labeled accurately.
Every municipality covered is listed on the service areas page.
Questions worth asking first.
Will my smart switches work if the internet goes down?
Devices that keep local control will. Cloud-only devices become a wall plate, which is worth knowing before they go in.
Does my box have room for a smart device?
Smart devices are deeper than what they replace, so box depth and fill get checked first. Sometimes the honest answer is a different device.
Why do my smart switches keep dropping offline?
Usually a missing neutral in the box or a weak signal at that wall, not a bad switch. Both are checked before a device is recommended.
Do you pull permits?
Where the municipality requires one, yes, and the work is left ready for inspection with the panel labeled and junctions accessible. Requirements genuinely differ across this metro, which is why it is established per address rather than assumed.
How long have you been doing this?
Clint has seventeen years in the trade and has been running his own shop out of O’Fallon since 2022.
Ask what it actually reads.
You get the figure and what it means, before any work is agreed. Audio/Video Wiring in O’Fallon and across the metro.
Hours are Mon-Thu 8-5, Fri 8-4, Sat 10-3 · or type it out.

