Whole-Home Electrical

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Unrivaled Electrical Systems Designed for Modern Demands

Incorrect wiring, overloaded panels, or outdated electrical layouts are more than just an inconvenience—they are significant safety hazards that can threaten your family and your property. Whether you are building from the ground up or updating an older home, you need to know that your system can handle today's heavy appliance and technology loads without a hitch.



At Holtzclaw Electric, we specialize in designing and executing comprehensive electrical installations in Marion, IL. Our experienced technicians handle every step of the process—from load calculations and initial blueprint planning to physical wire routing, outlet placement, and final inspections. We make sure your home's electrical core is built to last, giving you absolute peace of mind.

An Engineering-First Approach to Every Layout

We don't believe in cutting corners when it comes to the safety of your home. Our structural installation process follows strict protocols:

1. Rigorous Code Adherence

All of our installations are performed in strict alignment with the National Electrical Code (NEC) and local Marion, IL municipal guidelines.

2. Safety Inspections & Testing

Before we close up any walls, we perform rigorous safety diagnostics, checking circuit loads, groundings, and arc-fault/ground-fault safety devices.

3. Future-Proof Planning

We design your system with room to grow, ensuring your new electrical panel has the physical space and power capacity to handle future upgrades like EV chargers, hot tubs, or solar additions.

New Construction, Remodels, & Total System Overhauls

Our whole-home electrical installation services are structured to keep your project running smoothly, on budget, and on schedule:



  • New Construction Wiring: Designing and routing entire electrical layouts from your blueprints. We handle main panels, meter bases, structural wiring, outlet configurations, and lighting runs.
  • Remodeling & Additions: Seamlessly integrating new wiring into kitchen remodels, bathroom updates, basement finishes, sunrooms, and detached garages without disrupting your existing system.
  • Whole-Home Rewiring: Safely removing unsafe, legacy wiring setups (like old knob-and-tube or aluminum wiring) and replacing them with modern, grounded copper electrical lines.
  • Subpanel Installations: Adding secondary breaker boxes to safely support extra electrical demands in workshops, garage spaces, or home additions.

Upgrade Your Home's Electrical Framework Today

Never compromise on the safety and reliability of your home's power supply. Contact Southern Illinois' favorite local electrical team today to discuss your new build, remodel, or rewiring project.