Licensed Residential Electricians in Nashua, NH

Gagnon's Electrical Services handles the electrical work Nashua homeowners need done right, from small repairs to full panel replacements.

When Something's Off With Your Home's Electrical, Don't Ignore It. Call gagnon's.

Most homeowners don't think about their electrical system until something stops working. A tripped breaker that won't reset. An outlet that's warm to the touch. Lights that flicker when the AC kicks on. These aren't just annoyances, they're signs that something in your system needs a closer look.

Gagnon's Electrical Services works with homeowners throughout Nashua and the surrounding communities to keep residential electrical systems safe, functional, and ready for the demands of modern life. Whether you're dealing with an urgent issue or planning a renovation, we're the electricians Nashua residents call when they want the job done properly the first time.

We work in all types of homes across the Nashua area, from older properties in established neighborhoods to newer builds in growing communities like Merrimack and Bedford. Every home is different, and we take the time to understand yours before we recommend anything.

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Electrical Services We Provide for Nashua Homeowners

Gagnon's Electrical Services covers a wide range of residential electrical work. Here's what we handle on a regular basis.

  • Panel Upgrades and Replacements

    Older homes in Nashua, NH were often built with 100-amp panels, sometimes less. Today's households run significantly more power through their systems, and an undersized or outdated panel can't keep up safely. If your panel is decades old, uses fuses instead of breakers, or is a known problem brand, it's time to talk. We assess your current setup, recommend the right panel for your home's needs, and handle the full replacement with permits pulled and inspections passed.

  • Outlet and Switch Installation

    Need more outlets in the kitchen? A dedicated circuit for a new chest freezer in the garage? USB outlets in the home office? We install outlets and switches throughout your home cleanly and to code. We also replace outdated two-prong outlets with properly grounded three-prong outlets, which is a common need in older Nashua homes.

  • Ceiling Fan and Light Fixture Installation

    A ceiling fan or new light fixture sounds simple until you're up on a ladder looking at a wiring situation that doesn't match any diagram you've seen. We install fans and fixtures throughout the home, including in locations that don't currently have a box or wiring run to them.


  • Circuit Additions

    Adding a home office, finishing a basement, or installing a new appliance often means your existing circuits aren't set up to handle the load. We add dedicated circuits where your home needs them, done cleanly and in a way that doesn't leave your panel overcrowded.

  • Smoke and Carbon Monoxide Detector Installation

    New Hampshire code requires working smoke and CO detectors in specific locations throughout the home. We install hardwired detectors that meet current requirements and won't leave you dependent on batteries that always seem to die at 2 in the morning.


  • Whole-Home Electrical Inspections

    If you're buying a home, completing a renovation, or just haven't had an electrician look at your system in years, a whole-home inspection gives you a clear picture of where things stand. We go through your panel, your wiring, your outlets, and your fixtures and give you a written summary of what we find, no pressure to immediately book a repair.

Older Homes Require a Different Kind of Attention

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What We Commonly Find

A significant portion of the housing stock in Nashua, NH was built between the 1940s and the 1980s. These homes have character, but they also have electrical systems that were designed for a fraction of the power demand we put on them today. Knob-and-tube wiring, aluminum branch circuit wiring, and two-prong ungrounded outlets are things we see regularly in older Nashua homes.

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What It Actually Means for Your Home

Not every older electrical component is an emergency, but some are worth addressing sooner rather than later. Federal Pacific and Zinsco panels, for example, have well-documented reliability issues that go beyond normal wear. We'll tell you exactly what we find and what it means for your home's safety, without the scare tactics.

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How We Handle It

Gagnon's Electrical Services gives you options, not pressure. Sometimes an immediate fix is the right call. Sometimes it's a phased plan that fits your budget and timeline. We're not here to upsell you on work your home doesn't need, and we won't leave you with a list of repairs without explaining why each one matters. Call Gagnon's or get a quote here to get started

Serving Nashua Homeowners Who Expect It Done Right

Real Feedback From Nashua Area Homeowners

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This is the second time we have used Gagnons and have been very impressed with their work. We just had them install a ring doorbell and floodlight and they stayed until everything was working. They are my go too with all my electrical problems, highly recommend this company!

- Gerald Q

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We have called on Gagnon twice now to install light fixtures and I have been super impressed. Both times they were able to fit me in quickly and showed up when they said they would. Prices are reasonable and I am a satisfied customer!

- Rebecca W

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Today was the second time I have used their service. I have been extremely pleased with their timeliness and expertise. They do quality work and are respectful of your home. Shawn came today and he was great! I highly recommend Gagnon Electrical Service.

- Regina S

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  • Hollis
  • Merrimack
  • Hudson
  • Milford
  • Amherst
  • Brookline
  • Manchester
  • Pepperell
  • Dunstable
  • Townsend
  • Chelmsford
  • Tyngsboro
  • Lowell
  • And More!


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Serving Nashua and the Surrounding Community homes

Gagnon's Electrical Services is based in Nashua and works regularly throughout southern New Hampshire. Our residential service area includes Merrimack, Bedford, Hudson, Litchfield, Amherst, and neighboring towns. If you're close to Nashua, there's a good chance we work in your area.

We're a local business, not a franchise. When you call Gagnon's Electrical Services, you're talking to someone who knows this area, knows the housing stock, and has a track record in the community.