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TRUSTED BY HOLTSVILLE, NY HOMEOWNERS

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

Verified Reviews for Electrical Service pros in Holtsville, NY

*The Angi rating for Electrical Service companies in Holtsville, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.

*The HomeAdvisor rating for Electrical Service companies in Holtsville, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.

Last update on June 30, 2026

Find Electricians in Holtsville

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

"Totally satisfied with work performed by TFC Electric. Tom and his workers were extremely professional, courteous and took pride in their work. I would highly recommend them!!!!"
Additional Photos
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+29

Response time2 days
Recommended by98%of homeowners
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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

"Mike Connelly of Shamrock Electric Co. Coordinated the installation of my whole house Generac generator with PSEG long island and my plumber. He connected the automatic transfer switch and fully tested the system upon completion of the install. He has it set to run a test for 10 minutes once a week. My wife and I are extremely happy with the unit and the professional set-up by Shamrock Electric Company ."
Electrical Project
Additional Photos
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+5

Response time6 hrs
2 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for PKJ Electrical
PKJ Electrical
5.0(
18
)
Electrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation - Materials Not ProvidedElectric Vehicle Charging Station Installation+10 more

Serving Holtsville, NY and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Everything went great. PKJ electric did a great job. They even rewired my outdoor lights in a way that it isn’t going across my grass like It was before they took care of it! I would definitely recommend them and I would definitely use them again. Very professional."
Response time7 hrs
Response rate100%
3 neighbors recently requested a quote
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Avatar for The Electrical Wizard
The Electrical Wizard
4.7(
556
)
Electrical Switches, Outlets & Fixtures - Install or Repair - For BusinessOutdoor Lighting - Plan and InstallCeiling Fan - Install+4 more

Serving Holtsville, NY and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"John and his team helped us right away when we had an electrical emergency at our house. Definitely recommend!"
6" led hihats
Generator
Boiler wiring
Boiler wiring
Wall mount fixture

+16

Response time6 hrs
Response rate93%
2 neighbors recently requested a quote
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Avatar for Ryleigh Electric
Ryleigh Electric
4.9(
11
)
Electrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Switches, Outlets & Fixtures - Install or Repair+10 more

Serving Holtsville, NY and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Everything went super well! The Ryleigh Electric electricians did a great job. We will hire them again soon for more electrical work on lighting inside and outside our home. Very reliable company!"
Old broken fan
Attic fan replacement
New fan in place
Installation complete.
Additional Photos

+16

Response time1 day
7 neighbors recently requested a quote
Recommended by90%of homeowners
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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

"Ryan was very professional, got the job done quick and efficient heâ s very knowledgeable would definitely recommend him for your electrical needs"
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
Request Quote
Avatar for Newgrange Electric Inc.
Newgrange Electric Inc.
4.5(
74
)
Electric Vehicle Charging Station InstallationElectric Vehicle Charging Station Installation - For BusinessElectric Vehicle Charging Station Installation - For Business - Materials Not Provided+10 more

Serving Holtsville, NY and surrounding areas

Approved

In business since 2008

Emergency services offered

Warranties offered

"we've been using Newgrange Electric for our stand by generator for the past 5 years. very happy with the service and response. Thank you Newgrange!"
Additional Photos
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+8

Response time2 days
Response rate100%
Recommended by96%of homeowners
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Avatar for Big Ant Electric, Inc.
Big Ant Electric, Inc.
4.5(
40
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectrical Switches, Outlets & Fixtures - Install or Repair - For BusinessElectrical Wiring or Panel Upgrade+4 more

Serving Holtsville, NY and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Gerry was our electrician and I can't recommend him enough. He gave us a fair price and was always on time. He is a true professional who really made me feel like I could trust him."
Response time8 hrs
Response rate100%
Recommended by74%of homeowners
Request Quote
Avatar for 144 ELECTRIC ENTERPRISES LLC
144 ELECTRIC ENTERPRISES LLC
5.0(
15
)
Electrical Switches, Outlets & Fixtures - Install or RepairCeiling Fan - Install

Serving Holtsville, NY and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

"This is one of the best service companies I have ever dealt with! I the age of trying to find a company that will do work efficiently and effectively, 144 Electric and Mike are a treasure! The work was not only done right, it also fixed all the previous problems and issues that existed before! We highly recommend him and will share this with our neighbors and friends! Thank you Mike!"
Al and Mel
Al and Mel
Al and Mel
Al and Mel
Al and Mel

+8

Response time9 hrs
Response rate86%
4 neighbors recently requested a quote
Request Quote
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Showing 1-10 of 776
Electrical questions, answered by experts

If you’re interested in exploring other avenues to completely upgrade your electrical panel, it’s also possible to add a sub-panel, which is a smaller panel that connects to what you currently have in place. This way, you can add additional circuits without having to swap out your main panel.

Multiple wire sizes are used for residential electrical purposes. While the most common sizes used in homes are 14 and 12 gauge, some appliances, such as stoves, electric water heaters, central air units, etc., may use larger gauge wire to accommodate their larger amperage. Typically, larger appliances require 10-, 8-, or 6-gauge wires.

A ceiling light will usually have two or three wires: black, white, and sometimes green. Black wires are positive, or hot, while white wires are negative, or neutral. The green wire is the grounding wire. 

When you’re wiring the light, connect black to black, white to white, and green to the grounding screw.

If you encounter any issues or feel unsure about your abilities, stop immediately and contact a licensed electrician for help. It's better to be safe than sorry when it comes to electrical work, as mistakes during the wiring process can be hazardous to your home and personal safety.

If you’re replacing wires from an electrical meter box to the breaker box, you may also consider installing a new meter or replacing or repairing the breaker box . You can tell if the circuit breaker is bad if you’re dealing with tripping or worrisome burning smells. Both projects should also be handled safely by a licensed electrician.

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.

See all articles