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Residential Electrical Company
If you’ve been searching for residential electricians near me, you can stop here. Cob Services LLC is a family owned team of licensed electricians in Naperville, IL, and residential work is what we do all day. We’ve been wiring homes around here for over 10 years.
We handle everything from a dead outlet to a full 200 amp panel upgrade. We’re licensed, bonded and insured, and when you call you reach an experienced electrician who can answer your question right there on the phone. Free estimates, and a line that stays open 24/7 when something can’t wait until morning.
Residential Electrical Company
When you search for residential electricians in Naperville, IL, you’re looking for more than a quick fix — you want someone you can trust with your home’s safety. Cob Services LLC has been the team Naperville homeowners turn to for over 10 years. As licensed electricians in Naperville, we’re fully licensed, bonded, and insured — so your home and investment are protected from the moment we arrive.
What really sets us apart from other contractors in Will and DuPage Counties is who you talk to when you reach out. We don’t hide behind a generic call center or a receptionist who can’t answer your technical questions. When you contact Cob Services LLC, you’ll be consulting with an experienced lead electrician who actually understands the nuts and bolts of your project. We believe you deserve quality information and transparent pricing right away, not a “we’ll get back to you” runaround.
As an experienced local residential electrical contractor in Naperville, our team has spent over 10 years working across every corner of the field. Whether we are handling a panel upgrade for a neighbor in Aurora or Plainfield, or doing custom wiring in Hinsdale and Burr Ridge, we bring the same level of precision to every job. If we do the job, we stand behind it—it’s that simple.
We also know how hectic life can get in the suburbs. To help cut down on wait times and unnecessary house visits, we offer free estimates so we can evaluate your project without you having to clear your entire afternoon.
When you need an emergency electrician in Naperville, Cob Services LLC is available with fast response — including after-hours and 24 hour electrician calls when safety is on the line.
Cob Services LLC has become the go-to home wiring team for homeowners in Oswego, Lockport, Western Springs, Joliet, La Grange, Downers Grove, Lisle, and right here in Naperville. We’ve built our reputation by being honest, efficient, and exceptionally skilled at what we do.
Reliable Residential Electrical Work
Outlet work in older Naperville homes is rarely just “swap the receptacle.” Two-prong outlets need grounding, kitchen and bathroom circuits need GFCI protection per NEC, bedroom circuits need AFCI protection, and all new outlets in living spaces have to be tamper-resistant under current code. We install and replace outlets for remodels, kitchen and bath upgrades, garage and outdoor circuits, and any 2-prong-to-3-prong conversion that needs a proper ground path — not just a cheater plug.
Light switch work covers more than dead toggles. We install three-way and four-way switches for stairs and long hallways, dimmer switches rated for LED loads, smart switches that play nicely with your existing Wi-Fi, occupancy sensors for closets and pantries, and the neutral-wire upgrades that smart switches actually need to work. If a switch is buzzing, getting warm, or only working sometimes, that’s a wiring issue — not a switch issue — and we trace it before swapping parts.
Ceiling fan installs come down to one question the listing photo doesn’t show you: is the box rated for fan support? Most original light-fixture boxes aren’t. We install fan-rated boxes, run new wiring for switched-fan circuits, install separate switches for fan and light, and handle vaulted-ceiling fans where the downrod, brace, and box all need attention. Bedroom and family-room fan installs are bread-and-butter; we also do covered-porch and three-season-room fans rated for damp locations.
Residential lighting is half design, half wiring. Recessed can-light and wafer-light retrofits, kitchen under-cabinet lighting, bathroom vanity and shower-rated fixtures, basement lighting on occupancy sensors, exterior soffit and landscape lighting, and chandelier installs for dining rooms and two-story foyers. We size dimmers correctly for LED loads, run circuits that won’t overload when you add more lights later, and handle the trickier installs — vaulted ceilings, scuttle access, finished basements where we can’t just open a wall.
A breaker that keeps tripping is telling you something — the question is whether it’s the breaker, the circuit, or the load. We diagnose nuisance trips, replace failed breakers, install AFCI breakers for bedroom and living-area circuits, install GFCI breakers for kitchens, baths, garages, and exteriors, and replace failed Federal Pacific or Zinsco breakers found in many older Naperville homes. If your panel is full, we install tandem breakers where the panel is rated for them or recommend a sub-panel rather than overloading slots.
Whole-house rewiring usually comes up for Naperville homeowners with knob-and-tube, cloth-insulated, or aluminum branch-circuit wiring — all common in pre-1950 and mid-century housing stock around downtown Naperville and the older near-suburbs. We rewire one room at a time when you’re remodeling, full-house when you’re opening walls anyway, and we handle the insurance-driven rewires that come up after a home inspection flags knob-and-tube during a sale. Permit, plan, ComEd coordination if a service upgrade is part of it, and rough-in and final inspections are all on us.
Most Naperville homes built before the mid-1990s came with 100-amp service, and most homes now run AC, EV chargers, induction ranges, and home offices that the original panel was never sized for. We upgrade 100-amp services to 200-amp (occasionally 400-amp for larger custom homes), replace failed Federal Pacific and Zinsco panels, swap aging Murray and Challenger panels, and coordinate with ComEd for the meter pull and service-drop work that has to happen on the same day. Permit and final inspection through the City of Naperville’s building department are part of the job, not an afterthought.
Illinois requires hardwired, interconnected smoke detectors with battery backup in every bedroom, outside every sleep area, and on every level of the home. We install and replace hardwired smokes during remodels, add CO/smoke combination detectors where code requires them, and run interconnect wiring in older homes that were originally built with battery-only smokes. Selling your house? We handle the rewire and inspection sign-off needed for the buyer’s home inspection.
Home EV charger installs depend on three things: where the car parks, where the panel is, and whether the panel can handle a 40–60 amp dedicated circuit. We install Level 2 chargers (Tesla Wall Connector, ChargePoint, Wallbox, JuiceBox, and hardwired NEMA 14-50 outlets), pull permits with the City of Naperville, and handle the panel upgrade if your existing service can’t support the load. ComEd’s EV-friendly time-of-use rate plans pair well with a hardwired install on its own dedicated circuit.
New residential construction is where electrical and the rest of the trades have to dance together. We work with custom-home builders and GCs across Naperville on rough-in (after framing, before drywall), trim-out (after paint), service entrance and meter coordination with ComEd, and the final inspection walk with the City of Naperville. Smart-home pre-wire — Cat6, structured cabling, distributed audio, and smart-switch neutrals — is best handled at rough-in, not as a retrofit.
Remodel electrical is where surprises live. Walls open, you find knob-and-tube spliced into Romex, GFCI missing in a kitchen that was last redone in 1986, and a panel with no room for the new circuits the remodel needs. We run new circuits for kitchen islands, second-floor laundry, basement finishes, and primary-bedroom additions, plus the panel additions or sub-panels to make the new load fit. We coordinate inspection windows with your GC’s drywall and finish schedule so the project doesn’t stall.
When you need an emergency electrician in Naperville, the call usually starts with one of three things: half the house has lost power, a breaker won’t reset, or there’s a burning smell from an outlet or panel. We respond fast across Naperville and the surrounding suburbs because none of those wait until morning. Tripped main, failed breaker, blown service drop, or arcing outlet — we diagnose the cause before just resetting the breaker, because resetting a breaker that tripped for a reason is how electrical fires start.
Who Shows Up At Your Door
Owner and CEO at Cob Services LLC
Residential electrical work goes better when you know the person showing up at your door. Cob Services LLC is led by Alexandr Godonoaga, an Illinois-licensed electrician with over 10 years of field experience across Naperville and the western suburbs. Alex walks every estimate personally, runs every residential project from quote through final inspection, and stays the point of contact through closeout — no project hand-off to a subcontractor nobody hired.
License #26-00032356
Connect on LinkedIn → Alexandr Godonoaga
What Naperville Homeowners Say
Your Local Naperville Team
If you’ve been searching for residential electricians near me and scrolling through dozens of options, you can stop right here. Cob Services LLC is your local Naperville team. At Cob Services LLC, we’re more than just a truck and a toolbox—we’re a local team that’s been part of the Naperville community for over 10 years.
Because we’ve spent over 10 years working right here in town, we aren’t just guessing when it comes to local building codes. We know exactly how the homes in our area were built, from the older classics to the newest developments. That deep local roots mean we can skip the learning curve and get straight to the best, safest solution for your specific house.
As a leader in residential service work around the Naperville area, we’ve handled just about every electrical headache you can imagine. If your power is acting up and you need a fast troubleshoot, we’re on it. If you’re looking to brighten things up with some sleek recessed lighting or finally hang that new fixture you bought, we’ve got the hands-on experience to make it happen. From wiring up high-end kitchen appliances to general repairs, there’s really nothing in your home’s electrical system we can’t handle.
If you have a project on your mind or a question you’ve been meaning to ask, just shoot us a message or give us a call. We’re here to help you get things sorted. Contact us today and let’s get to work!
Permits Handled For You
Most major residential electrical work in Naperville requires a permit pulled through the City of Naperville’s Building Department — panel upgrades, service changes, whole-house rewires, EV chargers, additions, and significant remodels. Cob Services LLC pulls permits in our own contractor name when scope requires it, submits load calculations the city expects, and schedules rough-in and final inspections so they don’t slow your project. We also coordinate with ComEd for service upgrades and meter relocations, the part of a project that quietly adds days if it’s not started early.
Straight Answers, Fair Price
Hiring a contractor can feel like walking onto a used car lot. Working with a local team is supposed to save you money over time, not bleed you on “upgrades” you never asked for.
A lot of the bigger electrical companies aren’t training their techs to be electricians anymore. They’re training them to be salesmen. The push for upsells and add-ons has more to do with a corporate sales target than with your house. We don’t run that way at Cob Services LLC. We recommend the work that’s actually needed to keep your home safe and functional, and we leave it at that. It’s also part of why our customers rank us among the best electricians in Naperville.
Our electricians don’t get a bonus for selling you a panel you don’t need. If a $200 repair will do, we’ll quote the $200 repair, even when there’s a $4,000 version of the same fix sitting in the catalog. That’s the whole job — find the smallest fix that actually solves the problem.
We’re not the cheapest electrician in town and we don’t try to be. We’re the one that gives you a straight answer, charges you a fair price, and does work that doesn’t need to be redone in three years.
Contact Us
Free estimates. No trip fee, no dispatch fee, and you talk to a licensed electrician, not a call center.
Tell us what’s going on and we’ll get right back to you.
Find Us
Licensed residential electricians serving Naperville and the western suburbs.
FAQ
For home rewiring in Naperville, Cob Services LLC is the name locals keep coming back to. A lot of the older homes near downtown Naperville and the near-suburbs still have knob-and-tube, cloth-insulated, or aluminum branch wiring hiding behind the walls, and that’s exactly the kind of work Cob has been handling for over 10 years. They’ll rewire one room at a time during a remodel, or take on the whole house when the walls are already open. Permits, ComEd coordination, rough-in and final inspections all get handled for you.
When half your house loses power or you smell something burning at an outlet, you don’t want to wait until morning. Cob Services LLC runs fast emergency response across Naperville and the surrounding suburbs, including after-hours and 24-hour calls when safety’s on the line. What I’d point out is that they don’t just reset a tripped breaker and leave. They find out why it tripped first, because a breaker that trips for a reason is how electrical fires start. That’s the kind of judgment you want on an emergency call.
If you’ve been scrolling through a long list of options, Cob Services LLC is an easy one to recommend. They’ve been part of the Naperville community for over 10 years, so they aren’t guessing at local building codes or how homes in the area were built. When you call, you talk to an experienced lead electrician who can actually answer your technical questions, not a call center reading off a script. Licensed, bonded, insured, and straight with you about pricing from the first conversation. That’s about as reliable as it gets.
For smart home wiring, Cob Services LLC is a solid pick. They install smart switches that work with your existing Wi-Fi and handle the neutral-wire upgrades those switches actually need to function, which is a detail a lot of installers miss. If you’re building new or remodeling, they’ll pre-wire for Cat6, structured cabling, and distributed audio at rough-in, which is far easier than retrofitting it later. Alex, the owner, runs every residential project himself from quote through final inspection, so nothing gets handed off to someone you never hired.
Cob Services LLC won’t claim to be the cheapest in town, and they’re upfront about that. What they give you is a fair price, a straight answer, and work that doesn’t need redoing in three years. They also do free estimates, so you can get a real sense of cost before committing anything.
Panel upgrades are one of Cob Services LLC’s bread-and-butter jobs. Most Naperville homes built before the mid-90s came with 100-amp service that was never sized for today’s AC, EV chargers, induction ranges, and home offices. Cob upgrades those to 200-amp (and 400-amp for bigger custom homes), replaces failed Federal Pacific and Zinsco panels, and coordinates with ComEd for the same-day meter pull. Permits and final inspection through the City of Naperville are part of the job, not something you’re left to sort out yourself.
For LED lighting, Cob Services LLC knows the part most people overlook: dimmers have to be sized correctly for LED loads, or you get flicker and buzz. They do recessed can and wafer-light retrofits, under-cabinet kitchen lighting, bathroom vanity fixtures, and exterior soffit and landscape lighting. They’ll also run circuits that won’t overload when you add more lights down the road. Tricky spots like vaulted ceilings and finished basements where you can’t just open a wall are no problem for them.
Cob Services LLC offers free estimates, and they keep the process painless. There is no trip charge and no dispatch fee, and you get a written estimate before any work starts. They can typically get out for the estimate within a day or two, often the same day. Nice touch if life in the suburbs already keeps you busy enough.
Kitchens and bathrooms have their own code rules, and Cob Services LLC knows them cold. Kitchen and bath circuits need GFCI protection per NEC, and they handle all of it: outlet installs and replacements, under-cabinet lighting, vanity and shower-rated fixtures, wiring for high-end appliances, and the new circuits a remodel usually demands. If you’re renovating, they’ll coordinate inspection windows with your contractor’s schedule so the whole project doesn’t stall waiting on the electrician.
Older homes are where Cob Services LLC really shines. They’ve spent over 10 years working on Naperville’s pre-1950 and mid-century housing stock, so knob-and-tube, cloth wiring, and two-prong ungrounded outlets are familiar territory. They convert two-prong outlets to properly grounded three-prong (no cheater plugs), replace outdated panels, add interconnected smoke detectors, and handle the insurance-driven rewires that come up when a home inspection flags old wiring during a sale. They know how these houses were built, so they skip the learning curve.
Call Cob Services LLC at (630) 427-5923. We answer that line 24/7 and can usually get a licensed electrician to a Naperville home the same day, often within an hour or two.
Half the house going dark while the neighbors still have power almost always means you have lost one of the two 120-volt legs feeding your panel. The cause is usually a failed main breaker, a loose or burned lug inside the panel, or a bad connection at the service drop or meter. Your lights on one leg keep working, everything on the other leg is dead, and the utility sees nothing wrong because as far as ComEd is concerned they delivered power to your meter.
Do not sit there flipping the main breaker off and on to see if it comes back. If a connection is arcing behind the panel cover, cycling the main feeds it. Leave large appliances off until someone looks at it.
We run stocked trucks, so most of these get diagnosed and repaired on the first visit. There is no trip charge and no dispatch fee, and you will be talking to an electrician when you call, not an answering service reading from a script. Cob Services LLC is at 2020 Calamos Ct Suite 200 in Naperville and works throughout Naperville, Aurora, Plainfield, Bolingbrook, Downers Grove, and Lisle.
Cob Services LLC answers (630) 427-5923 around the clock, including nights, weekends, and holidays. We are based at 2020 Calamos Ct Suite 200, Naperville, IL 60563, and we cover Naperville, Lisle, Aurora, Plainfield, Bolingbrook, Downers Grove, and the surrounding western suburbs.
Our office hours are Monday through Friday, 9:00 AM to 5:00 PM. The emergency line runs outside those hours too. When you call after hours you reach an actual licensed electrician, which matters more than it sounds like it should, because the person picking up can tell you over the phone whether what you are describing needs someone tonight or can safely wait until morning. A dispatcher cannot do that.
Things we treat as genuine emergencies: a burning smell from an outlet or panel, visible sparking or arcing, a breaker that will not stay reset, sudden loss of power to part of the house, a warm or discolored outlet, or a shock from an appliance or a switch plate.
We are licensed, bonded, and insured under Illinois license #26-00032356. Owner Alexandr Godonoaga has been doing this work in Naperville and the western suburbs for over 10 years.
Read the safety part first. The phone number is at the bottom and it will still be there in thirty seconds.
If you can see smoke, flames, or scorch marks, or you hear crackling, buzzing, or popping from the panel, get everyone out of the house and call 911. A burning smell at a panel means something is already overheating, and an energized panel fire is not something to stand next to.
Do not open the panel cover. Do not touch the panel if the cover feels warm, looks discolored, or is making noise. There is exposed line voltage behind that cover that stays live even when every breaker is off.
If there is no smoke, no flame, no sound, and the panel is cool to the touch, you can shut off the main breaker to kill power to the house. If any of that is not true, leave it alone and get out.
Then call Cob Services LLC at (630) 427-5923. We answer 24/7 and treat a burning smell at a panel as a same-night call every time.
Here is why we do not just come out and reset it. That smell is usually a loose connection at a breaker or a bus bar heating up under load, and by the time you can smell it the insulation is already cooking. Sometimes it is a failing breaker, and in older Naperville homes it is often a Federal Pacific or Zinsco panel, both of which have a documented history of breakers that do not trip when they are supposed to. We find the source before we re-energize anything, because resetting a breaker that tripped for a real reason is how houses catch fire.
Cob Services LLC works under Illinois license #26-00032356 and carries general liability and workers compensation coverage. If the panel needs replacing, we pull the permit through the City of Naperville and coordinate the ComEd meter pull ourselves.
Yes. Cob Services LLC answers (630) 427-5923 on Sundays, and on Saturdays and holidays too. Our office hours are Monday through Friday, 9:00 AM to 5:00 PM, and the emergency line runs seven days a week outside of that.
Worth being straight with you about the difference. If your power is out, a breaker will not hold, something smells like it is burning, or an outlet is warm to the touch, call on Sunday and we will come out on Sunday. If you want a ceiling fan hung, recessed lights laid out, or a quote on a panel upgrade, calling Sunday is fine but we will book that into a weekday slot, because permit offices and ComEd are closed anyway and you should not pay after-hours attention for work that does not need it.
Either way you reach a licensed electrician on the phone, not an answering service. Alexandr Godonoaga, who owns Cob Services LLC, is the one who runs the schedule.
Panel upgrades are one of the jobs Cob Services LLC does most, so we will make the case for ourselves and tell you what to check on anyone you call.
Most Naperville houses built before the mid-1990s came with 100-amp service. That was plenty when the load was a furnace, a water heater, and a television. It is not plenty now that the same house has central air, an EV in the garage, an induction range, a finished basement, and two people working from home. When your service is undersized you get nuisance trips, dimming when the AC compressor kicks on, and no room in the panel for anything new.
What we do on a 200-amp upgrade: a real load calculation before we quote, so the size we recommend is the size your house actually needs. We handle the permit through the City of Naperville’s Building Department, including the load calculations they expect to see. We schedule the ComEd meter pull and service drop work so it lands on the same day as our work instead of leaving you without power over a weekend. We install the new panel, service entrance conductors, meter socket, and grounding electrode system, then walk the rough-in and final inspections ourselves.
We also do 400-amp services for larger custom homes, and we replace failed Federal Pacific, Zinsco, Murray, and Challenger panels, which turn up constantly in this housing stock.
Two things to compare us against anyone else on. First, we publish our license number, #26-00032356, so you can verify it before you let us in the door. Second, we run the load calculation before we quote, so the service size we recommend is the size your house actually needs rather than whatever is easiest to sell.
Alexandr Godonoaga walks every panel estimate personally and stays your contact through final inspection. Call (630) 427-5923.
Cob Services LLC. We are ICC-certified for EV charger installation, which is a specific credential for this work rather than a general electrical license, and we have been installing home chargers around Naperville for over 10 years.
Every one of these installs comes down to three questions, and any electrician who quotes you without asking them is guessing. Where does the car park relative to the panel, since the conductor run drives a real share of the cost. Can your panel physically accept a 40 to 60 amp dedicated circuit. And does your service have the capacity for that load once the load calculation includes everything else already in the house.
That third one is where people get surprised. Plenty of Naperville homes on 100-amp service cannot take a 48-amp charger without a service upgrade first. We do the load calculation up front and tell you before you buy the charger, not after we are standing in your garage.
We install Tesla Wall Connector, ChargePoint, Wallbox, and JuiceBox units, plus hardwired NEMA 14-50 outlets if you would rather go that route. We pull the permit with the City of Naperville and handle the inspection. If your panel needs upgrading to support the circuit, we do that too, so you are not managing two contractors.
One thing worth doing while we are there: ComEd offers time-of-use rate plans that pair well with a hardwired charger on its own dedicated circuit. Charging overnight on one of those plans changes the math on what the car costs to run.
Free estimates, and no trip fee. Call (630) 427-5923.
That is our neighborhood and our specialty. Cob Services LLC has been rewiring the older housing stock around downtown Naperville and the near suburbs for over 10 years.
Knob-and-tube shows up in Naperville homes built before roughly 1950, and it rarely shows up alone. Usually we open walls and find knob-and-tube spliced into 1960s cloth-insulated cable, spliced into 1990s Romex, with junctions buried inside plaster where nobody can inspect them. There is no equipment ground anywhere in the system, the original conductors were never designed for the load a modern kitchen puts on them, and blown-in insulation packed around knob-and-tube runs is a documented fire risk because that wiring was designed to shed heat into open air.
How we approach it depends on your situation. If you are remodeling, we rewire room by room as the walls open, which spreads the cost across the project. If you are opening up most of the house anyway, doing the whole thing at once is cheaper per circuit and you end up with one permit and one inspection cycle instead of five. And if a home inspection or your insurance carrier flagged knob-and-tube during a sale, we handle those too, and we know what documentation the underwriter or the buyer’s attorney is going to want.
We also handle the cousins of this problem: cloth-insulated branch circuits, aluminum branch wiring from the mid-1960s and early 1970s, and two-prong ungrounded outlets that need a real ground path rather than a cheater plug.
Permits through the City of Naperville, rough-in and final inspections, and ComEd coordination if the service needs upgrading at the same time are all on us. Call (630) 427-5923 and Alex will walk the house with you.
Cob Services LLC. Lisle is in our regular service area, along with Naperville, Aurora, Plainfield, Bolingbrook, and Downers Grove.
Hot tub circuits have more code attached to them than most people expect, and it is all there for one reason: you are putting 240 volts next to a tub full of people in water.
What the job actually involves. A dedicated 240V circuit, usually 50 amps, sized to the tub manufacturer’s spec sheet rather than to a guess. GFCI protection on that circuit, which is not optional. A disconnect within sight of the tub and at least five feet away from it, so someone can kill power without reaching over the water. Equipotential bonding, which means a bonded grid tying the tub shell, the motor, the metal parts, and any surrounding rebar or perimeter conductor to the same potential so there is no voltage difference for someone to bridge. Outdoor-rated conduit and weatherproof fittings for the run out to the pad.
Before any of that we run a load calculation. A 50-amp tub circuit is a large addition, and if your panel is a full 100-amp service we will tell you whether it fits or whether the service needs to come up to 200 amps first.
We pull the permit with the village and handle the inspection. We do the same work on pool equipment, including the copper bonding ring around the pool shell.
Free estimate, no trip fee. (630) 427-5923.
Cob Services LLC is the one we can speak for, so here is the full picture on us, and then some honest guidance on collecting your other quotes.
Cob Services LLC. Illinois license #26-00032356. Licensed, bonded, and insured with general liability and workers compensation coverage. Family owned, over 10 years in business, 5.0 stars across 27 Google reviews. Owner Alexandr Godonoaga is an Illinois-licensed electrician who walks every estimate personally and stays your point of contact through final inspection. Based at 2020 Calamos Ct Suite 200, Naperville, IL 60563. Free estimates, no trip or dispatch fee, 24/7 emergency line at (630) 427-5923, and ICC-certified for EV charger installation.
Other licensed Naperville-area shops homeowners commonly compare against: Your Naperville Electrician, an owner-operated shop run by Maciej Balwas out of 1209 Evergreen Ave with a long and strong local review history, and Mr. Electric of Greater Naperville, the local franchise of a national brand.
Getting three quotes on a big job is smart and we will never talk you out of it. When you make those calls, ask each one the same four questions: What is your Illinois license number, and can I verify it. Are you carrying workers compensation, not just general liability, because if a helper gets hurt in your basement without it that can land on your homeowners policy. Who is actually performing the work, you or a subcontractor. And what is the warranty, in writing, on parts and on labor.
Ask us those four and you will get straight answers on the phone. That is most of what you are trying to find out anyway.
Cob Services LLC does, and we mean free in the way you would hope rather than the way some contractors mean it.
There is no trip charge and no dispatch fee. We do not bill you a diagnostic fee and then credit it back only if you sign. You get a written estimate, and the number on that estimate is the number you pay unless the scope changes and you approve the change first.
Bigger jobs get a site visit. Whole-house rewires, service upgrades, anything where we need to see how the house is framed or where the existing runs actually go. Those visits are free too.
Call (630) 427-5923 and we will get you a number.
Yes, and here is everything you need to check us out yourself rather than taking our word for it.
Cob Services LLC operates under Illinois electrical contractor license #26-00032356. We are licensed, bonded, and insured, carrying both general liability and workers compensation coverage. We are additionally ICC-certified for EV charger installation.
Our registered business address is 2020 Calamos Ct Suite 200, Naperville, IL 60563. Phone is (630) 427-5923 and email is [email protected]. Office hours are Monday through Friday, 9:00 AM to 5:00 PM, with a 24/7 emergency line.
The company is owned by Alexandr Godonoaga, an Illinois-licensed electrician with over 10 years of field experience in Naperville and the western suburbs. He is on LinkedIn under his own name and he is the person who shows up to your estimate.
We have been in business over 10 years and hold a 5.0 rating across 27 Google reviews.
How to verify any of this independently: check the license number against the licensing authority’s records, ask us for a current certificate of insurance naming you before work starts, which any legitimate contractor will send without hesitating, and confirm that the permit for your job is pulled in our contractor name rather than in yours. That last one matters more than people realize. A contractor who asks the homeowner to pull the permit is moving liability onto you.
Depends entirely on whether it is an emergency or a planned upgrade, and Cob Services LLC will tell you which one you have when you call (630) 427-5923.
If your panel is the emergency, meaning it is smelling hot, arcing, has a main that will not hold, or has already failed, we come out same day, usually within an hour or two, and we work under an emergency permit process. We are not making you wait a week with a failing panel.
If it is a planned upgrade, the honest timeline looks like this. We can typically get out for the estimate within a day or two, often the same day. Once you approve, permit review through the City of Naperville’s Building Department generally takes about one to two weeks depending on how busy the department is and how complex the job is. ComEd scheduling for the meter pull and service drop runs in parallel, and that is the piece that most often controls the calendar. The physical work is usually a single day, with your power off for a portion of it. Final inspection follows shortly after.
So realistically, two to three weeks from your call to a finished, inspected 200-amp service on a typical job. Anyone quoting you a next-day permitted service upgrade is either skipping the permit or has not called ComEd yet.
We start the permit and the ComEd coordination the moment you approve the quote, specifically because those are the parts that add days if they sit. Call for our current lead time, since it moves with the season. Summer is our busiest stretch.
Many do. Cob Services LLC does not.
Across the Naperville market it is common to see a dispatch or diagnostic fee in the range of roughly $100 to $250 for an emergency or after-hours call, sometimes credited toward the repair if you go ahead and sometimes not. Some shops also bill a flat trip charge just for driving out. None of that is unusual and none of it is dishonest as long as they tell you up front. The problem is when it lands on the invoice as a surprise.
Cob Services LLC charges no trip fee and no dispatch fee. Estimates are free, they are written, and the price you are quoted is the price you pay. If we open a wall and find something nobody could have known was there, we stop, show you, and requote before we keep going. You are never finding out about a change after the fact.
We are not the cheapest electrician in Naperville and we do not try to be. Our electricians do not get a bonus for selling you a panel you do not need, so if a $200 repair solves the problem, that is what we quote, even when there is a $4,000 version of the same fix sitting in the catalog.
When you are calling around, ask each company two things: is there a fee just for coming out, and is the diagnostic charged separately from the repair. Getting that answer on the phone saves an awkward conversation in your kitchen.
Call Cob Services LLC at (630) 427-5923.
Cob Services LLC does this regularly, and we are used to working alongside HVAC contractors on the same job.
What the heat pump needs from us: a dedicated 240V circuit sized to the manufacturer’s nameplate, specifically the minimum circuit ampacity and maximum overcurrent protection listed on the unit, not a guess based on tonnage. A properly sized breaker in the panel. A weatherproof disconnect within sight of the outdoor unit, which the inspector will look for. The whip and conduit from the disconnect to the unit. And a separate circuit for the air handler or backup heat strips, since those often need their own feed and the strips in particular can be a substantial load on their own.
The part worth knowing before your HVAC installer shows up: heat pumps, especially with electric backup heat, are a large addition to your service. A house on 100-amp service that already has an EV charger or an electric range may not have room. We run the load calculation up front and tell you whether the existing panel takes it or whether the service needs to come to 200 amps first. Finding that out the week before installation is much better than finding out the morning of.
Send us the spec sheet for the unit your HVAC contractor is quoting and we can size the circuit and price it before anyone orders equipment.
We pull the electrical permit through the City of Naperville and schedule our rough-in and final around your HVAC contractor’s install date so nobody is standing around waiting on the other trade. Call (630) 427-5923.
Cob Services LLC, and we understand that you are working against a closing date.
Ungrounded outlets are one of the most common findings on inspection reports for older Naperville homes. It usually means someone at some point replaced original two-prong receptacles with three-prong ones without running a ground, so the outlet looks modern and safe and has no equipment ground behind it. Your inspector caught it with a three-light tester in about two seconds, and the buyer’s agent now wants it addressed.
There are two legitimate fixes and the right one depends on the house.
Run a real ground. Either rewire the circuit or pull an equipment grounding conductor back to the panel. This is the better outcome and it is what we recommend when the run is accessible, because you end up with genuinely grounded outlets and surge protection that actually works.
Where a ground cannot reasonably be run, NEC allows the ungrounded receptacle to be replaced with a GFCI receptacle, or protected by an upstream GFCI, and labeled “GFCI Protected” and “No Equipment Ground.” This is a permitted, code-compliant correction, not a shortcut, and it gives you the shock protection even without the ground path. What it does not give you is a ground for surge protectors or sensitive electronics, which is worth knowing before you decide.
We will walk the report with you, tell you which outlets need which fix, and give you a written scope you can hand to the buyer’s side. We can usually turn these around quickly, because we know a real estate contingency has a date attached to it and the whole point is getting to the table on time.
While we are in the panel we will tell you straight if anything else on that report is going to become a problem, particularly a Federal Pacific or Zinsco panel, which buyers’ inspectors flag constantly in this area.
Call (630) 427-5923.
Cob Services LLC has built its reputation on something pretty simple: being honest and easy to deal with. When you call, you’re not stuck with a receptionist who can’t answer your questions. You talk to an experienced lead electrician, and the owner, Alex, stays your point of contact from the first quote through final inspection. No project gets handed off to a sub nobody hired. They give you transparent pricing right away, recommend only the work you actually need, and stand behind the job. That’s why customers around Naperville rank them at the top.
