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TRUSTED BY OLD BETHPAGE, NY HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon31
    Verified generator installs reviews

Top-Rated Generator install pros in Old Bethpage - Updated Nov 2026

Avatar for JDM Electric INC.
JDM Electric INC.
4.8(
74
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+1 more

Serving Old Bethpage, NY and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"John and his team were excellent. Of the electricians I got quotes from, John was the only one who noticed that some existing breakers in my panel didn’t match the panel’s manufacturer and shouldn’t have been there. His team arrived on time, was thorough, and focused on solving the problem I brought them, with no upselling or scare tactics. On top of that, the price for my EV charger install was excellent. Highly recommend, and would work with again in a heartbeat."
Response time11 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Fielack Electric Corp.
Fielack Electric Corp.
4.5(
84
)
Fixed Generator - Install

Serving Old Bethpage, 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 Old Bethpage, NY and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"I've used J&A's services on two separate occasions: once around six years ago, and then again approximately two years ago. In both instances, I found them to be exceptionally professional and highly knowledgeable. The first project involved them replacing the electrical panel and service in my home shortly after I purchased it. More recently, their task was to install all the wiring for an upstairs project I was undertaking. They exceeded expectations in both encounters."
Hex lights
West islip
West islip
West islip
Brand new house rough in

+43

18 neighbors recently requested a quote
Avatar for A/C Performance Power, Inc.
A/C Performance Power, Inc.
5.0(
4
)
Generator - Repair - For Business

Serving Old Bethpage, 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 Real Power Electrical Contractors
Real Power Electrical Contractors
5.0(
6
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Old Bethpage, NY and surrounding areas

Approved

In business since 2014

Credit card accepted

Offers commercial services

"They worked as a subcontractor for a commercial project I had with a county water station. Marty is very knowledgeable, on time, cooperative with other trades, neat. His crew is also the same. Great guy, I would hire him again."
Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Star Electric
Star Electric
4.2(
125
)
Fixed Generator - InstallFixed Generator - Repair

Serving Old Bethpage, NY and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"i recently had a tesla charger installed, and i am extremely satisfied with the service. the electrician did an outstanding job he was professional, knowledgeable, and completed the installation much faster than i expected while maintaining excellent quality. the work was clean, efficient, and everything was installed perfectly. on top of that, his pricing was very reasonable compared to other estimates i received. it’s not often you find someone who delivers great workmanship, works efficiently, and offers affordable rates. i highly recommend him to anyone needing electrical work or an ev charger installation."
52 neighbors recently requested a quote
Recommended by81%of homeowners
SmithPros
4.0(
16
)
Portable Generator - Repair

Serving Old Bethpage, NY and surrounding areas

Approved

Customers say: Quality work

"Artique Constructions did an amazing job with my bathroom and kitchen remodeling. Can not recommend enough for their quality of work and commitment to deliver to perfection. I chose very modern high end designs and their work was impeccable. I would have spent more than double if I had gone for anyone else. I got complete remodeling of kitchen(floor/cabinets/island/pantry/installation of all kitchen appliances/backsplash/open shelves/led ceiling lights) bathroom(bathtub/vanity/floor/bath tiles/built-in shelves/toilet), changed all switches and electric boxes, trims throughout the house, paint, door knobs, hinges, custom wall paneling. Garry made the house look like a million bucks houses featured in magazine. He is very trustworthy and patient. His attention to detail is amazing. Would suggest anyone who wants to get their house in amazing shape with no hidden costs Garry is the person to go to."
Recommended by61%of homeowners
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Generator Install FAQs, answered by experts

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

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.

The Old Bethpage, NY homeowners’ guide to generator installs

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