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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

"MJS Installed my new Generator, Gas piping, gas stove and telescopic downdraft kitchen vent. every aspect of the system installation was on point. in meeting the building inspector, he noted that this company has always preformed they installations to code and safety highly recommend MJS all techs and office staff always kept me informed"
6 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
116 neighbors recently requested a quote
Recommended by96%of homeowners
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Electrical FAQs, answered by experts

Yes, you can get shocked while using a multimeter if:

  • You touch the metal tip while testing a live current.

  • The meter isn’t properly rated for the voltage.

  • The meter picks up on transient voltage that’s above the range you’ve set.

  • The meter has defective parts.

You can prevent shock and personal injury by using a multimeter properly and maintaining your device. 

If you’re unsure how to use a multimeter or want help with your project, contact a local electrician to get the job done.

You can use a double-pole switch for a regular light fixture, but it's unnecessary and won’t be the most efficient choice. A single-pole switch works perfectly for standard lights. Double-pole handle high-power appliances that require both hot wires to be disconnected. Using a single-pole switch for regular lights is more cost-effective, simpler, and more common in residential settings.

A faulty light switch can trip a breaker due to circuit overload or a short circuit. A faulty light switch may not always trip a breaker, so don’t use that as your only sign that something’s wrong. Always investigate the cause of a switch that isn’t working properly, feels hot to the touch, or is making unusual noises.

When wiring a switch, the power typically comes into the receptacle first. The neutral wire goes straight to the outlet, while the hot wire is split. You'll need a wire nut to splice the hot wire back to one of the receptacles, but you will also tie another wire into that same wire nut and run to the switch. That way, you can control the flow of electricity to that particular receptacle by turning the switch on and off.

Unless you have prior electrical experience, it’s best to hire a professional to install your new thermostat for you. Improper installation can damage wiring, lead to a blown fuse, and more.

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.