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TRUSTED BY GREENVILLE, NH HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon242
    Verified electrical services reviews

Top-Rated Electricians in Greenville - Updated Nov 2026

Avatar for Wilson Brothers Heating & Air Conditioning Inc
Wilson Brothers Heating & Air Conditioning Inc
4.5(
160
)
Fixed Generator - InstallElectrical Switches, Outlets & Fixtures - Install or RepairFixed Generator - Repair+19 more

Serving Greenville, NH and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"We've used Wilson Bros. for nearly 18 years for our major systems work. They've installed a 2-zoned HE gas furnace and 2 water heaters and done routine maintenance. Have also responded immediately in one or two emergencies. This is a family run organization. EVERYONE from accounting to technicians to estimators to the owner of the company are professional, personable and know what they're doing. And they get things done. They are not the cheapest in town, but their pricing makes sense and i'm willing to pay for the continuity. For less important things i'll use journeyman plumbers. But for the important stuff Wilson Bros. are my go-to folks. I can't say enough good things about them, if you couldn't already tell."
Three of the five heads are marked by the numbers in the blue circle. On the inside of the house is where you will find the mounted units. The slim ducts run alongside the white arrows and will eventually be covered to match the exterior of the house.
The slim ducts in the basement ceiling that connect from the branch box all the way to the 5 different heating and cooling units. These will be covered by the ceiling tiles once the job is finished.
7 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for The Speedy Sparky LLC
The Speedy Sparky LLC
5.0(
8
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectrical Wiring or Panel UpgradeElectrical for Home Addition or Remodel - Install+1 more

Serving Greenville, NH and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"Aubrey is great. We set an appointment which he was prompt for. He estimated the time which he was also right on the money, and the work was done neat, clean, and everything tested perfectly. This is the second time I have had him do some work for me and will call him for anything else electrical that I have."
Camper outlet & breakers
Camper outlet & breakers
Response time11 hrs
Response rate90%
MJS Electrical Services, LLC
3.6(
38
)
Fixed Generator - InstallElectric Vehicle Charging Station Installation - Materials Not ProvidedElectric Vehicle Charging Station Installation - For Business - Materials Not Provided+3 more

Serving Greenville, NH and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

"what they quoted was the final bill.....they cleaned up every area as they installed. They double checked as they were leaving to make sure everything was 100%. I wish they did more than electrical!!!"
7 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for W B Lightning Rods
W B Lightning Rods
4.6(
372
)
Lightning Protection - Install or Repair

Serving Greenville, NH and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"William and staff responded promptly to my request for service with reasonable pricing. They arrived at the house at the agreed upon time, were respectful of my property, explained the process and completed the work within the specified time frame. They were pleasant, easy to work with and installed a quality lightning rods system. I highly recommend them."
lightning protection
 Residential LPS
lightning protection
 Residential LPS
lightning protection

+79

Response time1 day
126 neighbors recently requested a quote
Recommended by96%of homeowners
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Electrical FAQs, answered by experts

GFCI stands for ground fault circuit interrupter, which means it has the ability to detect a ground fault and shut the circuit down before it creates hazards. General breakers may also do that because ground faults can cause overloads, but they’re more focused on amp overloads from any cause. GFCIs are often installed in specific outlets, but breakers can come with GFCI capabilities built in for broader ground fault protection.

Yes, but our analogy with the water hose doesn’t really work here. You see, electrical flow isn’t constant: It ebbs and flows like waves, coming in pulses of power. Hertz measures the rate of change in the flow of electricity, or how often it ebbs and flows. For example, 60Hz means that the electrons pulse through wiring 60 times per second. When they are pulsing, they’re in a brief retreat. Almost all United States equipment is rated for 60Hz.

Electric bills tend to be lower in spring and fall because people use less electricity during these seasons. Milder temperatures allow for less use of heating and cooling, unlike during winter and summer, which usually bring more extreme temperatures.

To fix a tripped light switch, locate your home's electrical panel and identify the tripped circuit breaker. It will be in the "off" or neutral position. Flip the breaker entirely to the "off" position, then switch it back to the "on" position. If the breaker trips again immediately, there may be a short circuit or overload in the system, requiring further investigation. If the switch still doesn't work after resetting the breaker, check for loose wires or faulty components in the switch itself. It is always best to consult a licensed electrician for persistent issues and when in doubt.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

The Greenville, NH homeowners’ guide to electrical services

From average costs to expert advice, get all the answers you need to get your job done.