Hear from Our Customers
Your breakers stop tripping every time you run the dryer and microwave at once. Lights stay steady when the AC kicks on. You’re not wondering if that warm outlet is about to become a real problem.
Most homes in Keller were built between 2000 and 2009, which means your electrical panel is hitting that age where it starts showing its limits. Modern appliances pull more power than systems from 15-20 years ago were designed to handle. Add in Texas summers where your AC runs nonstop, and you’re pushing your electrical system harder than it was ever meant to go.
When we upgrade your panel or rewire problem circuits, you’re not just fixing today’s issue. You’re setting up your home to handle whatever you plug in next without overloading. That means fewer service calls, lower risk of damage to expensive electronics, and actual peace of mind when storms roll through and everyone else is dealing with surge damage.
Carroll Service Co has been handling electrical work in Keller and the Mid-Cities area since before most of these neighborhoods were fully built out. We’re not a national franchise or a contractor who shows up in a different truck every time.
Every electrician on our team carries current Texas licensing and liability insurance. We’ve earned an A+ rating with the Better Business Bureau and multiple Super Service Awards because we show up when we say we will and we don’t leave until the work is done right.
Keller is one of the wealthiest and safest cities in Texas, with a median home value over $550,000. You didn’t invest in a property like that to have someone guess their way through your electrical system. We know the local codes, we pull the right permits, and we use commercial-grade materials that last decades longer than standard residential parts.
You call or submit a request online. We schedule a time that actually works for your day, not ours.
When we show up, we assess the problem or walk through the project scope. No guessing, no upselling you on stuff you don’t need. We give you transparent, upfront pricing that breaks down materials, labor, and timeline before we touch a single wire.
Once you approve, we get to work. If permits are required, we handle them. If inspections are needed, we schedule and manage those too. Our trucks are fully stocked with commercial-grade components, so we’re not making multiple trips to the supply house on your dime.
After the work is complete, we test everything, clean up, and walk you through what we did. All electrical work comes with a comprehensive warranty covering parts and labor. If something isn’t right, we come back and make it right at no additional cost.
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We handle electrical panel upgrades for homes that are overloading 100-amp or 150-amp panels with modern demands. That includes installing 200-amp panels with proper surge protection, which can lower your electric bill by up to 15% and prevent thousands in damage during storms.
Home rewiring services cover everything from outdated aluminum wiring to full-house rewiring for older properties. Keller has plenty of homes built in the late ’90s and early 2000s that are hitting the point where wiring starts to degrade. We replace it with current-code materials before it becomes a fire hazard.
Electrical troubleshooting covers the issues that keep coming back—breakers that trip, outlets that don’t work, lights that flicker. We don’t just reset the breaker and leave. We find the root cause, whether it’s a loose connection, an overloaded circuit, or faulty wiring, and we fix it permanently.
We also install backup generators for homes that can’t afford to lose power during summer storms or winter freezes. Texas weather is unpredictable, and if you’ve got a home office, medical equipment, or just don’t want to lose a fridge full of groceries, a generator is one of the smartest investments you can make. We handle the entire installation, including permits, gas line connections, and startup certification.
If your breakers trip frequently, your lights flicker when appliances turn on, or your panel is warm to the touch, those are clear signs your system is overloaded. Most homes in Keller were built in the last 20-25 years with 100-amp or 150-amp panels, which were fine at the time but struggle with today’s power demands.
Modern homes run multiple high-draw appliances at once—central AC, electric dryers, ovens, EV chargers, home offices with multiple computers and monitors. Your panel wasn’t designed for that load. If you’re adding square footage, finishing a garage, or installing new HVAC equipment, an upgrade isn’t optional—it’s required by code.
Another reason to upgrade is insurance. More insurers are refusing to renew policies or disputing claims on homes with outdated electrical systems. If your panel is over 20 years old or you’re still running a 100-amp service, it’s worth having a licensed electrician assess whether an upgrade makes sense before it becomes a bigger problem.
Electrical maintenance is proactive. It’s scheduling an inspection every few years to catch problems before they cause outages, fires, or expensive damage. We check your panel for loose connections, test your outlets and switches, inspect your wiring for wear, and make sure your surge protection is still doing its job.
Electrical troubleshooting is reactive. It’s what happens when something stops working or starts acting up—a breaker that keeps tripping, an outlet that’s dead, lights that dim randomly. We trace the issue back to its source, whether that’s a faulty breaker, a short in the wiring, or an overloaded circuit, and we fix it.
Both matter. Maintenance prevents most of the problems that lead to emergency calls. Troubleshooting solves the ones that slip through. If your home is over 10 years old and you’ve never had an electrical inspection, that’s a good place to start. If you’re already dealing with recurring issues, troubleshooting gets you back to normal fast.
Yes, most electrical work in Keller requires a permit, especially if you’re upgrading a panel, adding new circuits, or doing any work that involves opening walls or changing your home’s electrical capacity. The city enforces this to make sure work meets the 2023 National Electrical Code and local safety standards.
If you hire a licensed electrician, they handle the permit process for you. We pull the permits, schedule the inspections, and make sure everything passes before we close up the work. That protects you if you ever sell your home, file an insurance claim, or need to prove the work was done legally.
Skipping permits might save a few bucks upfront, but it creates major problems later. Unpermitted work can void your homeowner’s insurance, kill a home sale, or force you to rip out and redo everything during an inspection. It’s not worth the risk. Work with a contractor who does it right the first time, permits included.
Most residential panel upgrades take 6 to 8 hours, depending on the complexity of your existing setup and whether we’re also adding circuits or upgrading your meter base. If your home still has an old fuse box or we’re relocating the panel, it can take a full day or slightly longer.
We turn off power to your home during the upgrade, so plan for a day without electricity. That means no AC, no refrigerator, no Wi-Fi. Most homeowners schedule the work on a day when they can be out of the house or at least prepared for the downtime.
After the new panel is installed, we schedule a city inspection to make sure everything meets code. Once it passes, you’re good to go. The whole process from start to finish, including permitting and inspection, usually wraps up within a week. If you need the work done faster due to an emergency or a failed inspection, we can often expedite the timeline.
It depends on the scope of work. A service call for troubleshooting typically starts around $150 to $200, which covers the diagnostic visit and minor repairs. If the issue requires parts or more labor, we give you a clear price before we proceed.
Electrical panel upgrades generally run between $2,500 and $5,000, depending on whether you’re going from 100-amp to 200-amp service, adding subpanels, or upgrading your meter base. Whole-house rewiring can range from $8,000 to $15,000 or more, depending on your home’s size and how much of the existing wiring needs replacement.
We don’t do estimates over the phone because every home is different. We come out, assess the situation, and give you transparent, upfront pricing in writing. No surprises, no hidden fees. If the price doesn’t work for you, there’s no obligation. But if you move forward, you’ll know exactly what you’re paying for and why.
Yes. We’ve been doing both for over 25 years. Residential work includes everything from panel upgrades and rewiring to generator installations and lighting design. Commercial work covers office buildings, retail spaces, restaurants, and industrial facilities—anything that needs wiring installation, electrical maintenance, or code compliance updates.
Commercial projects are more complex because they involve higher voltage systems, three-phase power, and stricter code requirements. We’re licensed and insured to handle that level of work, and we’ve done it throughout the DFW and Mid-Cities area for decades.
Whether you’re a homeowner in one of Keller’s newer neighborhoods or a business owner near Town Center, we bring the same level of attention and quality to every job. We show up on time, we communicate clearly, and we don’t leave until the work is done right and inspected.
