- Monday - Friday: 09:00AM-05:00PM
- 2020 Calamos Ct Suite 200, Naperville, IL 60563
- [email protected]
Electrical Panel Upgrades, Installation & Subpanels in Naperville, IL
Cob Services LLC handles electrical panel upgrades, new panel installation, panel replacement, and subpanel work for homes and businesses in Naperville, IL and the surrounding suburbs. We’re licensed (#26-00032356), insured, and led by a working electrician with 10+ years on local jobs — not a call center. Most residential panel swaps are finished in a single day. Call (630) 427-5923 or request a quote online.
Naperville’s Go-To Team for Panel Work — Residential & Commercial
If your breakers keep tripping, your lights flicker when the AC kicks on, or you’ve spotted scorch marks near the panel, your service panel is asking for help. We don’t push you toward a full upgrade if a repair will do, and we don’t band-aid a 100-amp panel that’s been at capacity since 2003. We tell you what we’d do if it was our own house or our own business.
We work on:
- Main panel upgrades (100-amp to 200-amp, 200-amp to 400-amp)
- New electrical panel installation for additions, ADUs, and new construction
- Panel replacement for failed, recalled, or unsafe equipment (Federal Pacific, Zinsco, Pushmatic, FPE Stab-Lok)
- Subpanel installation for garages, basements, workshops, kitchens, and detached structures
- Subpanel repair — buzzing breakers, hot bus bars, double-tapped circuits, water-damaged enclosures
- Commercial panel and switchgear work for restaurants, retail, offices, multifamily, and warehouse spaces
Whether it’s a 1,400 sq ft ranch in south Naperville or a 12,000 sq ft retail space in Aurora, the licensing, the permit pull, and the inspection process are the same — and we handle all of it.
Signs You Need a Panel Upgrade or Replacement
A panel doesn’t usually fail all at once. It warns you first. Here’s what we see most often on service calls in Naperville and the surrounding suburbs:
- Breakers trip every time you run the microwave and the toaster together — that circuit is overloaded, and if it keeps happening, the breaker eventually wears out and stops tripping at all
- Lights dim when the dryer or AC starts up — the panel can’t keep up with peak demand
- The panel is warm to the touch, smells like burning plastic, or hums — stop using it and call us same-day
- You still have a fuse box, or a 60-amp or 100-amp panel — modern homes with EVs, induction stoves, and central AC need 200-amp service, minimum
- You have a Federal Pacific Stab-Lok, Zinsco, or Pushmatic panel — these were pulled from the market because the breakers don’t reliably trip during a fault. We swap these out as a safety priority.
- Scorch marks, rust, or moisture inside the panel — water and electricity belong on opposite sides of your wall
If two or more of those sound familiar, get the panel looked at before it forces the issue.
Residential Electrical Panel Services in Naperville, IL
For homeowners, the panel is the difference between a house that handles modern life and one that fights you every time you plug something in. We handle:
200-amp panel upgrades — the standard for any home that runs central AC, an electric range, or plans to add an EV charger. Most upgrades take six to eight hours start to finish, including the meter pull with ComEd.
Panel replacements for outdated, recalled, or damaged equipment. We pull permits with the City of Naperville (or your local jurisdiction — Aurora, Plainfield, Lisle, Bolingbrook, Downers Grove, Hinsdale, Burr Ridge, La Grange) and walk the inspector through the work.
Subpanel installation for finished basements, detached garages, home offices, kitchen remodels, and pool houses. A subpanel keeps load balanced, makes future circuits easier to add, and means you’re not running a single 200-foot circuit from the main panel for one outlet.
Subpanel repair when something on the secondary panel goes wrong — a tripped main lug, a corroded ground bar, a breaker that won’t stay seated. We don’t replace what we can repair.
We bring everything to the truck: copper grounding rods, surge protective devices, AFCI/GFCI breakers where code requires them, and labels for every circuit so the next person who opens that panel cover actually knows what they’re looking at.
Commercial Electrical Panel Installation & Replacement
Commercial panel work runs on a different clock. Every hour you’re shut down is revenue you don’t get back, so we plan around it. We coordinate with property managers, GCs, and tenants to schedule swaps after hours, on weekends, or in phased shutdowns when a single off-day isn’t an option.
We handle:
- Three-phase panel installation for restaurants, light industrial, and retail
- Service panel replacement for older buildings hitting capacity after tenant build-outs
- Subpanel and distribution panel work for warehouse zones, server rooms, kitchen lines, and HVAC additions
- Switchgear, breaker boxes, and feeder upgrades for multifamily and mixed-use properties
- Panel relocations during remodels and tenant improvements
If your operation is in Naperville, Lisle, Aurora, Plainfield, Bolingbrook, Downers Grove, Hinsdale, Burr Ridge, or La Grange, we’ve probably already worked on a building near yours.
What an Electrical Panel Upgrade Costs in Naperville
Pricing depends on what’s actually happening in the wall, but here’s an honest range based on jobs we’ve done in the area in 2025–2026:
| Job | Typical Range |
|---|---|
| 100A → 200A residential panel upgrade | $2,200 – $3,800 |
| 200A → 400A service upgrade (with utility coordination) | $5,500 – $9,500+ |
| Subpanel installation (60A–100A) | $1,200 – $2,400 |
| Federal Pacific / Zinsco panel replacement | $2,400 – $4,200 |
| Subpanel repair (single fault) | $250 – $750 |
| Commercial 3-phase panel work | Quoted on-site |
What changes the number: panel location, ComEd meter relocation, length of new feeder cable, surge protection, AFCI/GFCI requirements for your jurisdiction, and whether the existing grounding system meets current code. Every estimate is walked and quoted by Alexandr personally — no junior estimator, no bait-and-switch.
Service Areas — Where We Do Panel Work
We’re based in Naperville and serve the western suburbs. If your address is in or near these towns, we’re a short drive:
- Naperville, IL
- Aurora, IL
- Lisle, IL
- Plainfield, IL
- Bolingbrook, IL
- Downers Grove, IL
- Hinsdale, IL
- Burr Ridge, IL
- La Grange, IL
- and surrounding DuPage and Will County areas
If you’re searching “electrical panel upgrade near me” or “subpanel installation near me” from any of those zip codes, we’re who shows up.
Meet the Electrician Running Your Panel Job
Alexandr Godonoaga — Owner and CEO, Cob Services LLC
Alexandr is an Illinois-licensed electrician (License #26-00032356) with more than 10 years in the field across Naperville and the western suburbs. He walks every panel job before quoting, runs the install or oversees it directly, and stays the point of contact through final inspection. No project gets handed off to a sub nobody hired.
Connect on LinkedIn → Alexandr Godonoaga
How a Panel Upgrade Actually Works (Day-Of)
Most homeowners have never watched a panel get swapped, so here’s what the day looks like:
- Morning — We pull the permit (handled in advance), confirm the disconnect with ComEd, and shut down power at the meter.
- Hours 1–2 — Old panel comes off the wall. We label every existing circuit so nothing goes back wrong.
- Hours 2–5 — New panel mounted, new main breaker, new bus bars, new neutral and ground, fresh grounding electrode conductors to the rod and water main where required.
- Hours 5–6 — Every circuit re-landed, torqued to spec, labeled. AFCI/GFCI breakers installed where code calls for them.
- Hours 6–7 — Power back on, every circuit tested live, surge protection commissioned.
- Inspection — Scheduled with the local AHJ. We meet the inspector on-site.
Total downtime for the homeowner: roughly six to eight hours, almost always finished in a single day.
Why Cob Services LLC vs. Calling the Big Franchise
- Licensed (#26-00032356) and insured in Illinois — verifiable, not “trust us”
- Owner walks every quote — not a commissioned sales rep
- Same-day callback during business hours, 24/7 line for true emergencies
- Permits pulled, inspections handled — we don’t leave you to figure that part out
- 5.0 average across 27+ Google reviews from Naperville neighbors
- No upselling — if a repair fixes it, we repair it
Frequently Asked Questions
How much does an electrical panel upgrade cost in Naperville, IL?
A standard 100-amp to 200-amp residential panel upgrade in Naperville runs $2,200–$3,800 in most cases. The number moves up if the panel needs to be relocated, if ComEd has to drop and reset the meter, or if the existing grounding system needs to be brought up to current code. Commercial three-phase work is quoted on-site.
How long does a panel replacement take?
Most residential panel replacements take six to eight hours from power-off to power-back-on, and we usually finish in a single day. You’ll be without power during that window — refrigerator and freezer included — so plan a bit around it.
What’s the difference between a panel upgrade and a subpanel installation?
A panel upgrade replaces your main service panel with one that has a higher amp rating or modern breakers. A subpanel is a secondary panel fed from the main, used to add capacity to a specific area — a finished basement, a detached garage, a kitchen remodel, a workshop. You can have a perfectly fine main panel and still need a subpanel because you’re out of physical breaker slots.
Is a Federal Pacific (FPE) or Zinsco panel really dangerous?
Yes. Federal Pacific Stab-Lok and Zinsco panels have a documented history of breakers failing to trip during a fault — meaning the panel keeps feeding power into a short circuit instead of cutting it. Insurance companies in Illinois have stopped writing policies on homes with these panels. If you have one, it’s a replace-it priority, not a someday item.
Do I need a permit for an electrical panel upgrade in Naperville?
Yes — the City of Naperville requires a permit for any service panel upgrade or replacement, and the same is true for Aurora, Plainfield, Lisle, Bolingbrook, Downers Grove, Hinsdale, Burr Ridge, and La Grange. We pull the permit, schedule the inspection, and meet the inspector. You don’t have to file anything.
Can you install a subpanel for my EV charger or hot tub?
Yes. A dedicated subpanel for an EV charger, hot tub, pool equipment, or workshop is one of our most common subpanel jobs. We size the feeder for your actual load, install the right breaker, and run the circuit so it’s clean inside the wall — no exposed Romex through the garage.
Do you handle commercial panel work?
Yes. We install and replace three-phase panels, distribution panels, and switchgear for restaurants, offices, retail, multifamily, and light industrial spaces across Naperville and the western suburbs. We schedule around business hours when downtime would be expensive.
How do I know if my panel needs replacement vs. just a repair?
A few signs point to replacement: the panel is over 25 years old, it’s a known recalled brand (FPE, Zinsco, Pushmatic), it’s at or over capacity, or it has visible damage. Repair makes sense for a single faulty breaker, a loose connection, or a tripped main where the rest of the panel is healthy. We tell you which one applies — honestly — when we walk it.
Do you offer 24/7 emergency panel service?
Yes, for true emergencies — burning smell, sparking, smoke, or total power loss with no breaker reset working. Call (630) 427-5923 any time. For non-emergency work, we schedule next-business-day where possible.
Do you serve areas outside Naperville?
Yes — we cover Aurora, Lisle, Plainfield, Bolingbrook, Downers Grove, Hinsdale, Burr Ridge, La Grange, and the surrounding DuPage and Will County areas. If you’re not sure whether your address is in our zone, just call.
Schedule Your Panel Upgrade or Subpanel Installation
If your panel is overdue, the longer it waits, the more it costs you when it finally fails. Get it looked at now while it’s still a scheduled visit instead of an emergency call.
Call (630) 427-5923 or request service online — we’ll have an answer for you the same day.
Cob Services LLC
(630) 427-5923
2020 Calamos Ct Suite 200, Naperville, IL 60563
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