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Verified Reviews for Generator Install pros in Holley, NY

*The Angi rating for Generator Install companies in Holley, 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 Holley, 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 November 06, 2025

Find Generator install pros in Holley

Avatar for Anderson Water & Power
Anderson Water & Power
4.4(
618
)

Serving Holley, NY and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1988

Free estimates

Emergency services offered

"We really like the professional job done by Paul, James III and Nate, they answered all our questions and explained everything to our understanding. They are no doubt well-trained in their field and dedicated to the reputation of the company. Kudos to our saleperson Tom, who also happens to be the president. We had on-location visits from 3 companies to have a whole-house generator installed and no doubt picked the best company."
Free Water Test!
Cummins
Cummins Install
Cummins
Transfer switch Cummins

+62

194 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for Hurricane Home Solutions, Inc.
Hurricane Home Solutions, Inc.
4.7(
244
)

Serving Holley, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Pretty straight forward. Establish size,generator. Installed in an afternoon. Work professional and neat."
Champion Power Equipment Logo
8.5kW Side Profile
8.5kW Front Profile
Champion Automatic Transfer Switch
Cummins Logo

+9

Response time10 mins
13 neighbors recently requested a quote
Recommended by95%of homeowners
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John Betlem Heating & Cooling Inc - Electrical
4.7(
157
)

Serving Holley, 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.

60 neighbors recently requested a quote
Recommended by91%of homeowners
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Reliable Power Systems
4.8(
53
)

Serving Holley, NY and surrounding areas

In business since 2008

Free estimates

"Mike went above and beyond for me today. I need the generator for medical and respiratory equipment and Mike rearranged his schedule to get the generator running today! Very knowledgeable, and someone I immediately trusted and felt blessed by the introduction and service he provided to me and my family. I would strongly, recommend Reliable Power Systems and will certainly continue to call on them."
Recommended by100%of homeowners
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Avatar for Schedel Electric
Schedel Electric
5.0(
10
)

Serving Holley, NY and surrounding areas

In business since 2022

Free estimates

Emergency services offered

We sustain our business on quality and integrity. We are experts in our trade and our commitment to quality from beginning to end of your project. We look forward to earning your business. Call us anytime with any questions you may have. Thanks for your time and have a great day.

Response time5 hrs
Response rate98%
Recommended by100%of homeowners
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Avatar for AADTech Electric, LLC
AADTech Electric, LLC
4.8(
2
)

Serving Holley, NY and surrounding areas

In business since 2010

Free estimates

Emergency services offered

Welcome to AADTech Electric, LLC, the leading electric specialists serving Rochester and the surrounding areas. With over 10 years of experience in projects ranging from panel generator repair to wiring for new homes, we look forward to earning your business. Call today for a free estimate!

Upscale Restaurant
Time Square Building
Time Square Building
Five Guys Restaurant
Verizon Wireless

+26

Response time30 mins
Recommended by100%of homeowners
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Roz's Electric
5.0(
3
)

Serving Holley, NY and surrounding areas

In business since 2021

Free estimates

Credit card accepted

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.

Response time11 hrs
Recommended by50%of homeowners
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Showing 1-10 of 22
Generator Install questions, answered by experts

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

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.

Costs range from $500 to $2,500, depending on generator type and installation complexity.

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.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

The Holley, 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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