Electrical Panel Installation $5000-$7800 for a 100 to 200 Amp Service Upgrade

Electrical Panel Installation in Windham, NH

Licensed Panel Installation, Replacement & Repair for Windham Homes & Businesses

Your electrical panel is the distribution hub for every circuit in your home or building. When it fails, deteriorates, or can’t handle your current load, the work that follows isn’t a minor repair job. We handle electrical panel installation, full panel replacement, and breaker panel repair for residential and commercial customers in Windham and throughout southern New Hampshire. Our team is licensed in New Hampshire and Massachusetts, fully insured, and available for same-day and emergency appointments when a failing panel can’t wait.

Before any work begins, we provide a free upfront estimate so you know exactly what you’re paying. No surprises, no hidden charges after the fact.

If your panel is tripping breakers, running hot, or simply isn’t keeping up with your home’s demands, call us at (978) 915-7860 to schedule a free estimate. We’re available for same-day appointments throughout Windham and Rockingham County.

Why Windham Homeowners Trust Us with Panel Work

Panel installation and replacement means a licensed electrician is working inside your home on its most critical electrical system. Every Garneau Electric technician is screened and drug-tested before entering a customer’s home or business. That’s not standard practice in this industry, and we think it should be.

We’ve been serving residential and commercial customers in southern New Hampshire since 2020. Our dual-state licensing means Windham-area customers who straddle the state line can get continuity of service without coordinating separate contractors. Warranties are available on select services, and as an authorized Generac dealer, we understand the panel capacity demands that come with whole-home standby generator installations.

“Exceptional Job!”
“Jake (and Kyle) did an exceptional job. They were timely, knowledgeable, helped to educate us where needed without pushing.”

- Barrett K.
“Highly Impressed!”
“Highly impressed with everyone here at Garneau. Working with Pam to get the appointment set up was great and she constantly kept me updated”

- Joseph M.
“Great Communication!”
“Great communication with all employees from scheduling to installation. On time and work was completed well and quickly.”

- Kathy P.
“The Best!”
“Garneau is the best! Came out for a brand new customer, same day, and Jacob was able to fix the issue and explain an easy and very reasonably priced solution for long term prevention of a recurrence!”

- Erin W.
“Fantastic Service!”
“Fantastic service, very professional and polite, came earlier than expected and was very quick in getting my estimate for a transfer switch install.”

- John P.
“Professional!”
“Jake of Garneau is a professional, professional. Mad skills. Super friendly and good at math.”

- Ryan S.
“They're Great!”
“Jacob and Logan were great. They were very efficient and made sure we were satisfied with the work they performed.”

- Rich B.
“100% Recommend!”
“Always on time, take good care to make sure the house stays tidy and they just do a good job. Would 100% recommend to anyone looking for an electrician.”

- Corey A.

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Signs Your Electrical Panel Needs Attention

Some panel problems announce themselves clearly. Others are easy to dismiss until they become urgent. Here are the situations that warrant a call to a licensed electrician.

Breakers that trip repeatedly or won’t reset: This points to an overloaded or failing panel rather than a one-time event.
Warmth, burning smell, or scorch marks on the panel: Any of these is a fire hazard and requires immediate inspection.
Flickering or dimming lights when appliances run: The panel may not have sufficient capacity for your current electrical load.
A fuse box still in place: Fuse boxes don’t support modern amperage demands and lack current safety protections. Full replacement is the right call.
An aging or undersized panel: Panels over 25 to 40 years old, units rated below 200 amps, or those from manufacturers with known safety issues are common replacement candidates.
New high-draw equipment: Adding an EV charger, HVAC system, or hot tub often reveals that the existing panel lacks the capacity to support it.
Buzzing or crackling sounds from the breaker box: These sounds signal an active electrical fault that needs professional assessment now.

Panel Installation, Replacement & Repair: What Each Situation Involves

These three types of panel work are often used interchangeably, but they describe different scopes with different triggers.

New Panel Installation

Installation means placing a circuit breaker box where none previously existed. New construction, home additions, and detached structures like garages or workshops receiving electrical service for the first time all fall into this category. The work starts from scratch rather than building on existing infrastructure.

Panel Replacement

Replacement removes an existing panel that has reached end of life, failed, or is unsafe and installs a new one in its place. This is distinct from a panel upgrade, which increases amperage on a panel that’s still functional. If your current panel is the problem rather than just undersized, replacement is the appropriate scope. The 200-amp panel is the current standard for most single-family homes. Older homes with 60-amp or 100-amp service typically need a full service upgrade alongside the panel work.

Panel Repair

Not every panel problem requires full replacement. Repair covers component-level work: replacing a failed individual breaker, correcting damaged wiring connections inside the box, or addressing a specific fault without touching the rest of the unit. A licensed electrician’s assessment determines whether repair is sufficient or whether the panel’s age, condition, or capacity makes replacement the smarter long-term choice.

Permits & Inspection in New Hampshire

Residential electrical panel work in New Hampshire requires a permit and inspection. We handle the permit process and coordinate the inspection, and the work must pass before the panel is energized. The homeowner doesn’t manage these steps separately.

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Why Choose Garneau Electric?

Reliable Service
We show up on time, communicate clearly, and complete every job efficiently and safely.
Commitment to Quality
We treat each project with the same dedication to craftsmanship and long-term client relationships.
Proven Experience
We bring over eight years of expertise to every residential and commercial electrical project.
Trusted Professionals
We hire screened, drug-tested technicians who uphold the highest standards of safety and integrity.
Guaranteed Satisfaction
We stand behind our work and won’t charge until you’re completely satisfied with our service.
Transparent Pricing
We deliver upfront pricing and no surprises so you always know what you’re paying.

What to Expect When You Work with Us

We start every panel job with a free estimate. You’ll know the full price before we begin, and we coordinate the utility shutoff and reconnect so you don’t have to manage that separately. Most residential panel replacements are completed in a single day.

For customers managing a larger investment, financing options and payment plans are available. Addressing a panel safety issue promptly is better than deferring it, and we don’t want cost to be the reason it waits.

Our Club Membership program offers 15% off all services, priority booking, extended warranties, annual safety evaluations, and a lifetime warranty on installations. It’s worth asking about when you call.

Ready to get started? Call (978) 915-7860 or reach out online for a free estimate on electrical panel installation or replacement in Windham. We offer same-day and emergency appointments when the situation requires it.

Frequently Asked Questions

What’s the Difference Between a Panel Replacement & a Panel Upgrade?

A panel replacement removes a panel that has failed, is unsafe, or is at end of life. A panel upgrade increases the amperage capacity of a panel that’s still functional. Both involve installing new equipment, but the trigger and scope differ. If you’re looking specifically at upgrades for an aging-but-working panel, our panel upgrades page covers that situation.

My Breaker Keeps Tripping. Do I Need a New Panel?

Not necessarily. A single tripping breaker may point to an overloaded circuit, a faulty breaker, or a wiring problem rather than a failed panel. A licensed electrician’s assessment determines whether repair or replacement is the right call.

Can I Stay in My Home During a Panel Replacement?

Generally yes. Power will be off during the active work period, but you don’t need to leave the property.

Will My Homeowner’s Insurance Cover Panel Replacement?

Coverage depends on your policy and the cause of failure. Some policies cover replacement when the panel failed due to a covered peril. Checking with your insurer before scheduling is advisable.

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Contact Garneau Electric Today!

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