⚡ Electrical Service Upgrades for Central
and Southern New Hampshire Homes

Is your home struggling to keep up with today’s energy demands? Whether your breakers are constantly tripping or you're installing new appliances or systems, an electrical service upgrade may be exactly what you need.

At Lenn Johnson Electric, we specialize in upgrading outdated electrical service panels to meet modern safety standards and power demands. Our licensed electricians serve homeowners across Southern New Hampshire with safe, efficient, and code-compliant electrical upgrades.

⚡ Why Upgrade Your Electrical Service?

Older homes were never designed to support the energy needs of today’s modern household. Between electric vehicles, HVAC systems, kitchen appliances, and smart home tech, many homes quickly outgrow their original electrical service capacity.

Here are common signs that it's time for an upgrade:

  • Frequent breaker trips or blown fuses

  • Lights that flicker or dim regularly

  • Reliance on extension cords or power strips

  • Adding large new appliances (e.g., electric range, hot tub)

  • Planning home renovations or additions

  • Fuse box instead of a circuit breaker panel

  • Your panel is rated under 100 amps

Upgrading to 100, 150, or 200 amps ensures your home can handle today’s load safely and efficiently.

🛠️ What’s Included in an Electrical Service Upgrade?

When you choose Lenn Johnson Electric, our skilled electricians will evaluate your home’s electrical system and determine the safest and most efficient upgrade path.

Our electrical service upgrade includes:

  • Electrical load calculation and consultation

  • Replacement of outdated fuse or breaker panels

  • Upgrade from 60 or 100 amps to 200 amps

  • Installation of new circuit breakers and grounding systems

  • Service mast and meter box updates (if needed)

  • Coordination with your local utility company

  • Full inspection to ensure NEC and local code compliance

  • Cleanup and post-installation walkthrough

We handle every part of the process, so you don’t have to worry about permits, scheduling utility disconnects, or safety issues.

🔌 Why Choose Lenn Johnson Electric?

  • ✅ Fully licensed and insured electricians

  • ✅ Over 20 years of experience serving Southern NH

  • ✅ Up-to-date with NEC and local code requirements

  • ✅ 5-star rated for professionalism and quality

  • ✅ Transparent pricing with no surprise fees

  • ✅ Fast turnaround and minimal disruption to your home

Your home’s safety, efficiency, and future depend on a reliable electrical service. Trust the experts at Lenn Johnson Electric to upgrade it the right way.

Why Homeowners Choose Lenn Johnson Electric

Licensed & Insured Electricians
Every project is handled by experienced professionals who meet local and national safety standards.

Upfront Pricing
No surprises — just honest, competitive pricing for top-quality work.

Prompt & Courteous Service
We respect your time, your home, and your schedule.

Commitment to Safety
Our work is always done to code, with your family’s safety as our top priority.

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Serving Homeowners Across Central & Southern New Hampshire

We proudly provide residential electrical services across many towns and communities throughout Central NH. Whether you’re renovating a home, building new, or just need a quick repair — Lenn Johnson Electric is ready to help.

Need fast service? Contact us today to schedule a free estimate or speak with a licensed residential electrician.

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Get a Free Residential Electrical Quote

Have an electrical project in mind? Reach out to Lenn Johnson Electric today. We’ll walk you through your options and provide a clear, no-obligation quote.

👉 Call (603)-496-3990
👉 Or Request a Quote Online

  • An electrical service upgrade involves increasing the amperage capacity of your electrical panel—commonly from 60 or 100 amps to 150 or 200 amps—to support greater electrical demand and ensure code compliance.

  • If you're frequently tripping breakers, experiencing flickering lights, using too many extension cords, or adding large appliances or square footage to your home, it’s likely time for an upgrade.

  • Yes. Older or overloaded panels can become fire hazards, increase the risk of power failure, and limit your home’s functionality. A timely upgrade protects both your home and family.

  • Costs vary based on the size of your upgrade and the current condition of your system, but typical residential upgrades range from $2,000–$4,000. We provide transparent quotes with no hidden fees.

  • A standard residential electrical service upgrade usually takes 1 to 2 days, including utility coordination and inspections.

  • Yes. Permits are required by law, and our team handles the permitting and inspection process for you.

  • A panel replacement swaps the breaker panel only. A full electrical service upgrade includes increasing amperage capacity, meter and service mast updates, and compliance upgrades to the entire incoming service.

  • Due to the complexity, safety risks, and legal requirements, service upgrades should only be performed by licensed electricians.

  • Due to the complexity, safety risks, and legal requirements, service upgrades should only be performed by licensed electricians.

  • We provide electrical service upgrades across Central New Hampshire, including towns like Andover, Boscawen, Franklin, Henniker, Hopkinton, Concord, Manchester, Pembroke, and more. If you're unsure whether we serve your area, feel free to contact us — we're happy to help!

Why Choose Us?

  • High Quality Work

  • Quick Response

  • Locally Owned & Operated

  • Flexible 24/7 Hours

  • Excellent At Troubleshooting Electrical Problems

  • Specializing In Modern Kitchen Electrical Wiring & Wiring Of Historic Buildings

  • Wiring For New Home Additions

  • Commercial Electrical New Construction & Repairs

  • Over 16 Years In Business

  • Over 28 Years Of Experience

  • Electrician Since 1985

  • Master Electrician Since 1989