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Best generator install pros near Nassau, NY

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Top-Rated Generator install pros in Nassau - Updated Nov 2026

S & S Electric of NY, LLC
5.0(
141
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Nassau, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1989

Free estimates

Emergency services offered

"Very responsive and easy to work with. High quality work, has extensive electrical experience. Also provided and installed whole house back up generator."
New 200 amp electrical service panel
Existing 100 amp electrical service meter & pa
Exiting 2 meter, 2 panel electrical service
New 2 family, 2 panel circuit breaker service
Response time1 day
1 neighbors recently requested a quote
Recommended by74%of homeowners
Avatar for Rubino Electric
Rubino Electric
4.8(
27
)
Fixed Generator - InstallPortable Generator - Install

Serving Nassau, NY and surrounding areas

Approved

In business since 1999

Free estimates

Customers say: Terrific value

"John is a customers ultimate contractor, heâ s very professional, when he says heâ s going to be there heâ s there, which is a rarity today, I had to redo my electrical service over and add 4 panels with meters on a rental property that I owned in Troy , John design the job and did it exactly the way that we Discussed it , in a very timely manner and very neat.( I am and electrician down in the city, so for me to have someone reliable and trustworthy to do my work on my properties is very comforting) I will use him on any future work that I have."
Service upgrades
Response time10 hrs
Response rate93%
2 neighbors recently requested a quote
Avatar for Crisafulli Bros. Home Services
Crisafulli Bros. Home Services
4.7(
73
)
Fixed Generator - InstallFixed Generator - Repair

Serving Nassau, NY and surrounding areas

Approved

In business since 1939

Credit card accepted

Offers commercial services

"Brandon came out this morning to assess the issue. He was very polite and professional. Maximus and Jon were my installers. They were professional, polite and got the job done timely. Great guys!"
Response time9 hrs
Response rate86%
48 neighbors recently requested a quote
Avatar for Least Resistance Electrical Contracting LLC
Least Resistance Electrical Contracting LLC
5.0(
14
)
Fixed Generator - Install

Serving Nassau, NY and surrounding areas

Approved

In business since 2025

Emergency services offered

Warranties offered

"Installed a 220W plug in for my welder. Great work super nice guy! Definitely recommend. Went over everything with me, very detailed and takes pride in his work. Easy to contact and answers very quickly. Thanks Steve!"
Let There Be Light!
Sub Panel
Early Stages of Electrical Rough In.
4 Gang Switch Box
Sub Panel Service Entry

+17

4 neighbors recently requested a quote
Avatar for CHIEF ELECTRIC LLC
CHIEF ELECTRIC LLC
5.0(
20
)
Portable Generator - Install

Serving Nassau, NY and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"We used them for a variety of jobs in residential home. Installed new chandelier and foyer lights, change light switches and installed Ring doorbell. Chief is my go to for all my electrical needs. All jobs done right the first time."
CHIEF ELECTRIC LLC
16 neighbors recently requested a quote
Avatar for Andrus Power Solutions
Andrus Power Solutions
5.0(
1
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Nassau, NY and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"We had a great experience with Andrus. Tony came out before our Kohler generator installation to clean up our electrical panel and did an incredibly thorough job. Everything was left clean and organized. The generator installation itself went very smoothly. The team was professional, knowledgeable and respectful of our property, and everything was explained clearly along the way. We're very happy with the finished installation and feel much better knowing we're prepared for the next outage. Would definitely recommend Andrus!"
Generator Repair
Response time6 days
Avatar for Troy Generator Service
Troy Generator Service
New to Angi
Fixed Generator - Repair

Serving Nassau, NY and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

Troy Generator Service LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business. 21 years experience.

Response time20 mins
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Generator Install FAQs, answered by experts

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

While the rating will tell you how many watts the refrigerator needs at the peak of its cycle, it requires additional wattage to start. At the bare minimum, you’ll need a 1,500-watt generator to get the fridge up and running after a blackout. A 2,000-watt generator should be sufficient for most home refrigerators.

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

The Nassau, NY homeowners’ guide to generator installs

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