Top-rated generator install pros.

Best generator install pros near West Islip, NY

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in West Islip, NY?

Select your specific project to find the pro for you.

TRUSTED BY WEST ISLIP, NY HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon21
    Verified generator installs reviews

Top-Rated Generator install pros in West Islip - Updated Nov 2026

Avatar for Fielack Electric Corp.
Fielack Electric Corp.
4.5(
84
)
Fixed Generator - Install

Serving West Islip, NY and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"Wow, they just left and I am so beyond impressed with everything, from start to finish. Adam helped with our estimate and was a pleasure to work with. He came next day for our estimate and from there, went above and beyond to answer every single question and concern of mine, he was fair in his pricing, very timely in his responses and even remembered the layout of our home when I called a month later. They were even able to schedule the job next day due to the inclement weather. Jim and Matt arrived early and were so courteous and pleasant to work with (they were even extremely considerate of my infant's nap schedule). We had them install two new outlets for ac's and electronics and they had to snake the wires in impossible places. Jim listened to every single one of my concerns and came up with excellent solutions and they left everything in better condition than they found it. When I asked if there was another way to get the job done, he listened and offered to change his plan. It was so nice having a contractor actually listen to you and work with you. I will definitely be hiring them again - I am so glad I finally found an electrician that is respectful of an older home. Thank you Adam, Jim & Matt! You guys rock!"
Electrical Work
Response time1 day
2 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for J&A Electrical Construction LLC
J&A Electrical Construction LLC
5.0(
19
)
Fixed Generator - InstallPortable Generator - Install

Serving West Islip, NY and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"John is a very professional electrician and is very knowledgeable about what he does. Him and his crew have many years of experience doing this kind of work and it really shows. I just had them install a new car charger for me and I couldn’t be any happier with the results!"
Hex lights
West islip
West islip
West islip
Brand new house rough in

+43

18 neighbors recently requested a quote
Avatar for DEPENDABLE RENOVATIONS LLC
DEPENDABLE RENOVATIONS LLC
5.0(
25
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving West Islip, NY and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Dependable Renovations LLC. was a pleasure to deal with. Steve and his staff are knowledgeable, courteous, honest and professional. All work was completed, as discussed and in a timely fashion. What I truly appreciate is the concern for the cleanliness of their work and the respect of their surroundings. That's something you can't teach. I would highly recommend Dependable Renovations for any work consideration."
3 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for A/C Performance Power, Inc.
A/C Performance Power, Inc.
5.0(
4
)
Generator - Repair - For Business

Serving West Islip, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Jim, the Owner provided timely, Expert generator repair, to get a 15 year old 30KW generator that hadnâ  t run in years operational in 30 minutes. We were fortunate to find him, and appreciate his skill, integrity...truly a consummate Professional ! 5+ Star recommendation"
Generator repair
Generator repair
Generator repair
Generator repair
Generator repair

+27

Response time9 hrs
Recommended by100%of homeowners
Avatar for Patience HVAC, LLC
Patience HVAC, LLC
4.9(
30
)
Fixed Generator - Repair

Serving West Islip, NY and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Anthony came to perform a cleaning and inspection of our old furnace. Immediately after he was done I felt a difference in air flow and fresher smelling air through the vents. He checked the furnace for any issues and didn't try to push any extra services. I did ask a bunch of questions and he answered them patiently! I look forward to calling him when its time to install Central Air and replace our furnace. Thank you!"
Peerless
Peerless Boiler with Hot Water
Annual Service
Response time4 hrs
Recommended by100%of homeowners
Avatar for Star Electric
Star Electric
4.2(
125
)
Fixed Generator - InstallFixed Generator - Repair

Serving West Islip, NY and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Fast and super helpful. Gave me a proposal right away. Started work same week. If deviations were needed, was specific on what and why. Reasonable and fair pricing, and honest about their capabilities and areas of expertise. Professional team and went out the way to provide additional references for other concerns. I also appreciated the video Fabio took to show me the before and after, especially in areas I was unable to see."
50 neighbors recently requested a quote
Recommended by81%of homeowners
...
Showing 1-10 of 144
Generator Install FAQs, answered by experts

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

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.

Many services include assembling the unit and securing it in the window. Confirm with your provider.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

The West Islip, NY homeowners’ guide to generator installs

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