⚡ Home Circuit Wiring & Rewiring Services in Central & Southern New Hampshire

Safe, Code-Compliant Wiring That Keeps Your Home Running Smoothly

Behind your walls is a network of circuits and wires powering everything from your lights and outlets to your HVAC system, appliances, and smart home tech. If your home’s wiring is outdated, overloaded, or improperly installed, it can pose serious risks—including electrical fires.

At Lenn Johnson Electric, we provide expert circuit installation, electrical wiring, and complete rewiring services for homes across Southern and Central New Hampshire. Whether you’re upgrading an older home or wiring a new addition, we deliver safe, code-compliant work you can count on.

🏡 When Do You Need Wiring or Rewiring Services?

Older wiring systems—especially those in homes built before the 1980s—may not be equipped to handle today’s electrical demands. We recommend a professional inspection and possible rewiring if you notice any of the following:

• 🔥 Burning smells or scorched outlets

• ⚠️ Frequent breaker trips or blown fuses

• 💡 Lights flickering or dimming when large appliances start

• 🧯 Aluminum wiring (common in 60s–70s homes)

• 🏠 Knob-and-tube wiring

• 🔌 Not enough outlets or overuse of extension cords

• 🚫 No GFCI protection in kitchens, bathrooms, or outdoor areas

Whether you need a single circuit repaired or a full-house rewiring, we can help modernize your system safely and efficiently.

Our NH Circuit Wiring & Rewiring Services Include:

• ✅ Full-home rewiring (replace outdated or hazardous wiring)

• ✅ New wiring for home additions and remodels

• ✅ Dedicated circuits for appliances (ovens, dryers, EV chargers)

• ✅ GFCI and AFCI protection upgrades

• ✅ Smart home wiring (thermostats, lighting, security systems)

• ✅ Circuit repair and troubleshooting

• ✅ Subpanel and load balancing

• ✅ Surge protection installation

Every project is done to meet National Electrical Code (NEC) standards and local New Hampshire regulations.

Why Electrical Rewiring Matters

Modern lifestyles demand more power—and more safety. Here’s what a professional rewiring or circuit upgrade gives you:

• 🔒 Improved safety – Prevent electrical fires and eliminate shock hazards

• 💡 Better performance – No more flickering lights or overloaded outlets

• 🔌 Support for new appliances – EV chargers, hot tubs, and HVAC systems need dedicated circuits

• 🛠️ Increased home value – Updated electrical work adds resale value and improves inspection results

• ⚡ Code compliance – Avoid insurance issues and meet today’s safety standards

🛑 DIY Electrical Work Is Dangerous

Electrical wiring is not a DIY project. Incorrect installation can lead to fire hazards, damaged appliances, or even serious injury. Our licensed electricians handle your wiring needs with precision and care—so you don’t have to risk it.