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  • Average homeowner rating star icon5
    Average homeowner rating
  • Verified reviews icon23
    Verified generator installs reviews

Verified Reviews for Generator Install pros in Hewlett, NY

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

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

Last update on May 29, 2026

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

Avatar for No Shorts Electric, Inc.
No Shorts Electric, Inc.
5.0(
99
)
Portable Generator - Install

Serving Hewlett, NY and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"After putting in a request on Home Advisor, Mike responded very quickly. I advised him i wanted to install a transfer switch for a generator and he went through the steps of what would need to be done. He asked a few questions, asked for a picture of the junction box, and then gave me a very reasonable quote. The day of the install, he called to reconfirm our appointment. The install was quick and clean."
old electrical meter and meter pan
Service Upgrade
Service Upgrade
old electrical meter and meter pan
old 100 amp fused electrical panel

+3

Response time2 hrs
Response rate96%
Recommended by97%of homeowners
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Avatar for A/C Performance Power, Inc.
A/C Performance Power, Inc.
5.0(
4
)
Generator - Repair - For Business

Serving Hewlett, 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
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Avatar for Real Power Electrical Contractors
Real Power Electrical Contractors
5.0(
6
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Hewlett, NY and surrounding areas

Approved

In business since 2014

Credit card accepted

Offers commercial services

"I was very accommodating and professional."
Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Mr. Wonderful's Electric, Inc.
Mr. Wonderful's Electric, Inc.
4.7(
14
)
Portable Generator - Install

Serving Hewlett, NY and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"Paul is extremely professional and knowledgeable. Kept me informed from the first phone call to the day he and his team showed up. Very honest and provided quality work. He corrected a switch that was not up to code, installed high hats, an outdoor outlet, and fixed an issue with lost power to a flood light. He and his crew did a great job and worth every penny!"
200 amp 2 meter service
200 amp PVC service
Chandelier
LED hi hats
200 amp panel

+5

Response time4 hrs
Response rate94%
Recommended by92%of homeowners
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Avatar for Star Electric
Star Electric
4.2(
125
)
Fixed Generator - InstallFixed Generator - Repair

Serving Hewlett, 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."
52 neighbors recently requested a quote
Recommended by81%of homeowners
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Avatar for Henry Home Improvement
Henry Home Improvement
5.0(
2
)
Fixed Generator - InstallFixed Generator - Repair

Serving Hewlett, NY and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Great job, not too expensive and good work, I will look to hire Henry’s team again!"
Response time3 days
28 neighbors recently requested a quote
Request Quote
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Showing 1-10 of 157
Generator Install FAQs, answered by experts

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

The Hewlett, NY homeowners’ guide to generator installs

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

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