Top-rated electricians.

Best electricians near Holtsville, NY

Enter your zip and get matched with up to 5 pros

Need a pro for your electrical service project in Holtsville, NY?

Select your specific project to find the pro for you.

TRUSTED BY HOLTSVILLE, NY HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon1.7k+
    Verified electrical services reviews

Top-Rated Electricians in Holtsville - Updated Nov 2026

Avatar for TFC ELECTRIC, INC.
TFC ELECTRIC, INC.
5.0(
206
)
Electric Vehicle Charging Station InstallationElectric Vehicle Charging Station Installation - For BusinessElectrical Switches, Outlets & Fixtures - Install or Repair+8 more

Serving Holtsville, NY and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"Work of upgrading from 150 to 200 amp system! Replacement of mast attachment to house went fantastic ! Professional, punctual and clean on all work done ! All connections from outside of home to inside done meticulously including labeling of the entire new electrical panel down to every outlet and light switch ! Labeling of generator sub panel and connections to critical outlets and switches in the event of a power outage ! Complete on time on budget peace of mind !! Priceless!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+29

Response time2 days
Recommended by98%of homeowners
Avatar for Shamrock Electric Co Inc
Shamrock Electric Co Inc
4.9(
327
)
Electric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation+10 more

Serving Holtsville, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Free estimates

Emergency services offered

"For the past 15 years Mike from Shamrock Electric has done extensive electrical work for two homes. He is personable, reliable, knowledgeable and fastidious. Recently he returned for a smaller job and completing a delicate onyx sconce installation with the same skill and expertise. I’m always confident that the job has been done right when Mike does my electrical work. I highly recommend him. He is a pro!"
Electrical Project
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+5

Response time6 hrs
2 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for PKJ Electrical
PKJ Electrical
5.0(
19
)
Electric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation+10 more

Serving Holtsville, NY and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Amazing. He was here several times, always arrived on time with all materials. Before every job the pricing was discussed and I paid exactly what was agreed upon with no surprises. The electrician was kind, considerate and caring and explained everything to me. He made suggestions and took the time to help me understand everything. I learnt this is a family business and being a small business owner myself It was such a pleasure to have him here. So many companies today you get no personalized attention. He was always reachable by email or phone. I would highly recommend him and will continue to use him."
Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Morris Electric
Morris Electric
4.9(
30
)
Electrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Wiring or Panel Upgrade - For Business+2 more

Serving Holtsville, NY and surrounding areas

Approved

In business since 2000

Free estimates

Customers say: Quick response

"My family and I needed someone knowledgeable, trustworthy and affordable - Morris Electric covered everything we wanted and more. Literally saved us for multiple days when the grid went out and we couldn't have stayed in our home without the work Morris Electric did...Highly recommend!"
Lake Ronkonkoma House
Lake Ronkonkoma House
200amp upgrade
200amp upgrade
200amp upgrade

+3

Response time2 hrs
3 neighbors recently requested a quote
Recommended by93%of homeowners
...
Showing 1-10 of 778
Electrical FAQs, answered by experts

A multimeter does not measure frequency, charge, inductance, and other electrical quantities. Instead, it measures voltage (AC and DC), current, and resistance.

Most electric water heaters have a built-in shut-off switch, so you can simply turn that to the OFF position. Some water heaters have the switch inside a panel, so you might need to unscrew the panel, remove it, move aside the insulation, and then shut the water heater off. To make sure it’s off, you can also locate the switch for your water heater in your electrical panel and shut the power off there. Most electrical panels have dedicated switches for the water heater, so you can shut off the power without affecting the rest of your home.

Yes, you can connect two extra outlets (or more) to one outlet if the total load on the circuit allows for it. If you have a 15-amp circuit, electrical code allows up to eight outlets or light switches. But if you’re dealing with outlets in the kitchen and bathroom, you may not be able to have as many. Kitchen and bathroom appliances often need higher amperage. You can also change a single outlet to a double outlet by cutting a larger hole in the drywall and replacing the outlet with a quad receptacle.

An electrician will charge between $100 to $150 to install a new light switch. Whether you need to cut into the wall and repair drywall will determine your final project cost, as you can expect to pay $50 to $75 per square foot to repair drywall.

Before hiring an electrician, check out the contractor’s official website, read reviews, and look them up on your local Department of Labor’s website. If you’re hiring for a complex job, pay special attention to their level of expertise. Also, call up pros directly to ask about their insurance status, specifically liability insurance, and request customer references.

The Holtsville, NY homeowners’ guide to electrical services

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