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TRUSTED BY HENRIETTA, NY HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon18
    Verified generator installs reviews

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

John Betlem Heating & Cooling Inc - Electrical
4.7(
157
)
Fixed Generator - Install

Serving Henrietta, NY and surrounding areas

Approved (Corporate)

In business since 1941

Free estimates

Emergency services offered

John Betlem Heating & Cooling is a 3rd generation company founded in 1941. They provide Residential HVAC, Electrical and Insulation Services to Rochester, NY and the surrounding towns. John?s slogan that still holds true today is to do ?whatever it takes? to satisfy customers. \n \nJohn Betlem is a premier family operated solutions provider, passionately committed to the health, safety, and comfort for all they serve.

15 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Loos Electric, Inc.
Loos Electric, Inc.
4.9(
17
)
Portable Generator - Install

Serving Henrietta, NY and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"I would highly recommend Garrett at Loos Electric, Inc! Garrett ran electric for our new above ground pool quickly and was able to work with us on a tight turnaround when our pool install was pushed up by a month and two days before we left for vacation. He was very professional and a pleasure to work with. We will definitely be reaching out to him for our future electric needs!"
Response time1 day
1 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Sunrise Solar
Sunrise Solar
5.0(
7
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Henrietta, NY and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Jared was amazing with communication and the attention to detail with the installation of the electrical panel was beyond expectation. He gave us exactly what we asked for and more. I would hire him again for any future electrical projects we might have. His team was also highly skilled and talked us through everything they were doing."
Solar by the Lake
Solar by the Lake
Solar Sunrise
Electrical Panel Upgrade
Response time11 hrs
Response rate97%
13 neighbors recently requested a quote
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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.

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.

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 run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

The Henrietta, NY homeowners’ guide to generator installs

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