Zimmerman Electric is a licensed, family-owned electrical company serving all of Johnson County, Indiana, including Greenwood, Franklin, Bargersville, New Whiteland, Trafalgar, Edinburgh, and every community in between. We handle residential and commercial electrical work: panel upgrades, whole-house surge protection, EV charger installation, rewiring, lighting, and troubleshooting.
Johnson County's housing stock spans a wide range. Franklin, the county seat, has established neighborhoods with homes dating to the early 1900s. Greenwood — the county's largest city and a southern Indianapolis suburb — contains both mid-century subdivisions and newer residential developments along US-31 and Smith Valley Road. The rapidly growing communities of Bargersville and New Whiteland bring a steady wave of new construction. Each environment presents distinct electrical demands, and our team works across all of them. Whether you are upgrading an outdated 100-amp panel in a 1960s Franklin bungalow or installing a Level 2 EV charger at a newer Greenwood home, Zimmerman Electric delivers code-compliant work, transparent pricing, and clean job sites.
Every estimate is free. Every job is fully permitted and inspected. No hidden fees, no high-pressure sales. Just a small, accountable team that answers the phone, shows up on time, and does the job right the first time.
Licensed & Insured
Serving Central Indiana since 2022 with code-compliant electrical excellence.
The Zimmerman Insight
Local Johnson Specialists
Electrical Services We Provide in Johnson County
Zimmerman Electric offers a full range of residential and commercial electrical services for homes and businesses across Johnson County. Below are the services Johnson County property owners request most often.
Electrical Repairs & Troubleshooting
Tripping breakers, dead outlets, flickering lights, and unexplained power loss are common across Johnson County's mix of older Franklin-area homes and newer Greenwood and Bargersville developments. Our licensed electricians diagnose the root cause accurately and fix it right the first time. We handle circuit troubleshooting, outlet and switch repairs, GFCI corrections, and any repair work your home or business requires.
Learn more about repairs
Panel Upgrades & Replacements
Many older Johnson County homes — particularly in Franklin and established Greenwood neighborhoods — still operate on 100-amp panels or outdated Federal Pacific and Zinsco breaker boxes. These panels were never designed for today's electrical demands and carry documented fire risks. Zimmerman Electric upgrades panels to 200-amp service, handles all permitting, and ensures your system meets current code requirements.
Learn more about panel upgrades
Whole-House Surge Protector Installation
Indiana's frequent thunderstorms send damaging voltage spikes through utility lines every season. A whole-house surge protector installed at your main panel shields every circuit, outlet, and hardwired appliance in your home. Installation takes under two hours and provides continuous protection at zero energy cost.
Learn more about surge protector installation
EV Charger Installation
Johnson County, particularly the Greenwood and Bargersville corridors, is seeing rapid growth in electric vehicle adoption. Zimmerman Electric installs Level 2 home EV chargers with dedicated 240V circuits, handles the permit, and ensures your panel can support the added load. We install all major brands including Tesla Wall Connector, ChargePoint, JuiceBox, and Emporia.
Learn more about EV charger installation
Lighting Installation & Upgrades
From recessed LED lighting in kitchens to landscape lighting for curb appeal, Zimmerman Electric handles interior and exterior lighting projects across Johnson County. Services include recessed lighting, pendant and chandelier installation, under-cabinet lighting, outdoor security lighting, and whole-home LED retrofits.
Learn more about lighting upgrades
Wiring & Rewiring Services
Whether you need new construction wiring for a Bargersville development, a whole-home rewire for an older Franklin property, or dedicated circuits for a home office or workshop, our team handles the full scope. We replace outdated aluminum and knob-and-tube wiring, wire home additions and basement finishes, and install circuits for high-draw equipment.
Learn more about rewiring
Commercial Electrical Services
Zimmerman Electric serves Johnson County businesses with commercial electrical installation, tenant improvement wiring, commercial lighting, code compliance inspections, and ongoing maintenance. We work with office buildings, retail spaces, restaurants, and warehouse facilities throughout the Greenwood, Franklin, and Bargersville business corridors.
Learn more about commercial
Why Johnson County Homeowners
Trust Zimmerman Electric
Choosing an electrician for your home or business is a decision that directly affects your family's safety. Johnson County homeowners consistently choose Zimmerman Electric for several clear reasons.
Family Owned & Operated
Zimmerman Electric is a local Indianapolis business, not a franchise or national chain. The owner stands behind every project, and you speak with local community members when you call.
Licensed & Insured
Every electrician on our team is fully licensed and insured. We are registered with the Indianapolis Department of Business and Neighborhood Services (BNS), and all our work meets or exceeds the National Electrical Code. We pull all required permits and schedule inspections.
4.9-Star Google Rating
Our reputation is built on hundreds of positive reviews from real Indianapolis homeowners. We earn our rating on every job through quality workmanship for your home.
BBB Accredited
We maintain our Better Business Bureau accreditation because we believe in transparency, accountability, and resolving any concern quickly and fairly.
Respectful Service
Our electricians always wear shoe covers, lay down drop cloths where needed, and clean up completely before leaving.
Transparent Pricing
We provide detailed written estimates before work begins. No hidden fees, no surprise charges. You approve the scope and price before we start.
Full-Service Residential Capability
From new construction to emergency repair, from a single outlet replacement to a complete whole-home rewire, Zimmerman Electric handles the full scope of residential electrical work.
Master Electrician
Indy Local
Efficient work
Check out what Johnson Homeowners say about Zimmerman Electric
Our commitment to 100% code-compliant excellence is reflected in the trust of homeowners and businesses across Indiana.
Brian
“Zimmerman Electric has been great to work with. Within two hours of first calling they were on site and provided the estimate. The team went above and beyond what was certainly a challenging installation. I am very impressed and will absolutely recommend them to anyone needing electrical services.”
Paul Linn
“Zimmerman electric is fast and efficient. I had messaged them a few days ago and wanted a price to install a Tesla wall charger at my house. He gave me a quote the same day and was able to install it before I brought the vehicle home. They did great work and cleaned up any mess they created after the work was done. They did a great job and would highly recommend them for all your electrical needs.”
Andrew Bastnagel
“Had a great experience with Zimmerman as they helped me install my home EV charger.They were quick to give an estimate, got me booked within a week and did great work! Highly recommend, great experience all around!”
Brian
“Zimmerman Electric has been great to work with. Within two hours of first calling they were on site and provided the estimate. The team went above and beyond what was certainly a challenging installation. I am very impressed and will absolutely recommend them to anyone needing electrical services.”
Paul Linn
“Zimmerman electric is fast and efficient. I had messaged them a few days ago and wanted a price to install a Tesla wall charger at my house. He gave me a quote the same day and was able to install it before I brought the vehicle home. They did great work and cleaned up any mess they created after the work was done. They did a great job and would highly recommend them for all your electrical needs.”
Andrew Bastnagel
“Had a great experience with Zimmerman as they helped me install my home EV charger.They were quick to give an estimate, got me booked within a week and did great work! Highly recommend, great experience all around!”
VERIFIED REVIEWS
EXPERT ADVICE
Electrical Safety and Upgrades for Johnson County Homes
Johnson County's housing stock spans well over a century. Franklin, the county seat, has historic neighborhoods with homes dating to the early 1900s. Greenwood — the county's largest city — contains established mid-century subdivisions north of Smith Valley Road, as well as newer construction closer to the I-65 and US-31 corridors. At the other end of the growth curve, Bargersville and New Whiteland have seen rapid residential expansion, with thousands of new homes added in recent years as suburban sprawl continues south from Indianapolis.
This range of housing means Johnson County electricians encounter a wide variety of electrical conditions. Older homes in Franklin and the historic Greenwood neighborhoods may have knob-and-tube wiring, undersized panels, or outdated fuse boxes. Newer homes in Bargersville and the southern corridor may need additional circuits for EV chargers, home offices, or smart home systems. Understanding the most common issues helps homeowners recognize warning signs before a minor inconvenience turns into a safety hazard or expensive repair.
Below are the electrical topics Zimmerman Electric addresses most frequently in Johnson County, along with practical guidance on when professional attention is needed.
What Electrical Problems Are Most Common in Older Johnson County Homes?
Homes built before the 1970s in Franklin and established Greenwood neighborhoods frequently have outdated wiring systems, including knob-and-tube wiring, aluminum branch circuit wiring, and undersized electrical panels rated at 60 or 100 amps. These systems were designed for far fewer demands than a modern household places on them.
Common symptoms include frequent breaker tripping, flickering lights when appliances cycle on, warm or discolored outlet covers, and two-prong outlets that cannot accept grounded plugs. If your home was built before 1980 and has never had an electrical update, a professional inspection is strongly recommended.
When Should Johnson County Homeowners Upgrade Their Electrical Panel?
An electrical panel upgrade is recommended when your home has a 100-amp or smaller panel that cannot support modern loads, when breakers trip regularly under normal household use, when you are adding high-draw equipment such as an EV charger or new HVAC system, or when your panel is a Federal Pacific or Zinsco brand with documented safety defects.
In Johnson County, panel upgrades require a permit and a post-work inspection. Zimmerman Electric handles the full process: assessment, permitting, utility coordination with Duke Energy or REMC, installation, and final inspection.
Why Is EV Charger Installation Growing in Johnson County?
Johnson County, particularly the Greenwood and Bargersville corridors, has seen growing electric vehicle adoption driven by newer garage-equipped homes, proximity to Indianapolis, and expanding charging infrastructure along US-31. Most Level 2 EV chargers require a dedicated 40-amp or 50-amp 240V circuit. Homes with 200-amp panels can typically accommodate this without issue, but homes with 100-amp panels may need a panel upgrade first.
Zimmerman Electric assesses your panel capacity, installs the dedicated circuit, mounts and connects the charger, and handles the required permit. We install all major brands including Tesla Wall Connector, ChargePoint, JuiceBox, and Emporia.
What Electrical Upgrades Improve Home Value in Johnson County?
Several electrical upgrades directly increase a Johnson County home's market value and appeal to buyers. A 200-amp panel upgrade is one of the most impactful, as home inspectors flag outdated or undersized panels in nearly every pre-1990 home sale.
Other value-adding upgrades include whole-house surge protection, EV charger installation (especially with an installed 240V outlet in the garage), updated GFCI and AFCI protection throughout the home, modern recessed lighting, and replacing any knob-and-tube or aluminum wiring. These improvements also reduce insurance premiums and eliminate common deal-breakers during the home inspection process.
Why Do Lights Flicker in Johnson County Homes?
Flickering lights are one of the most commonly reported electrical symptoms in Johnson County homes, especially in older Franklin and Greenwood properties. Causes include loose wiring connections, an overloaded circuit shared with a large appliance, a failing breaker, or an undersized panel that cannot distribute power cleanly across all circuits.
Occasional, brief flickering when a large motor starts (such as an HVAC compressor) may be normal. Persistent or worsening flickering warrants a professional inspection, as it can indicate a loose connection that generates heat and creates fire risk.
Do I Need a Permit for Electrical Work in Johnson County?
Yes. Most electrical work in Johnson County requires a permit. This includes electrical panel replacements, new circuit installations, EV charger installation, significant rewiring, and service upgrades. Permits are issued through the Johnson County Building and Planning Department and are followed by a mandatory inspection.
Unpermitted electrical work creates serious liability: it can void homeowner's insurance, complicate home sales, and leave unsafe conditions undetected. Zimmerman Electric pulls permits and schedules inspections for every project that requires them.
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