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Verified Reviews for Generator Install pros in Williamson, NY

*The Angi rating for Generator Install companies in Williamson, 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 Williamson, 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 March 01, 2024

Find Generator install pros in Williamson

Avatar for Anderson Water & Power
Anderson Water & Power
4.4(
617
)
Fixed Generator - Install

Serving Williamson, NY and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1988

Free estimates

Emergency services offered

"We had a Cummins generator installed. Our installers were professional and knowledgeable. I highly recommend Anderson."
Free Water Test!
Cummins
Cummins Install
Cummins
Transfer switch Cummins

+62

Response time2 days
183 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
)
Fixed Generator - Install

Serving Williamson, 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 time11 hrs
Response rate94%
15 neighbors recently requested a quote
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John Betlem Heating & Cooling Inc - Electrical
4.7(
157
)
Fixed Generator - Install

Serving Williamson, 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.

84 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for T-Mark Plumbing, Heating, Cooling & Electric
T-Mark Plumbing, Heating, Cooling & Electric
4.5(
643
)
Fixed Generator - InstallFixed Generator - Repair

Serving Williamson, NY and surrounding areas

Approved

In business since 1992

Free estimates

Credit card accepted

T-Mark Plumbing, Heating, Cooling & Electric was founded over 25 years ago to provide friendly, efficient service to residents and businesses across Buffalo and Western New York. The largest family-owned and operated business in WNY that understands the challenge and frustrations that can occur with plumbing, HVAC, and electrical emergencies. Community voted the # 1 company in 716 and available 24 hours a day 7 days a week. Our day one focus has never changed: 100% customer satisfaction. We take the time, every time, to ensure our customers are left happy and satisfied with not only the quality of our work, but with the entire T-Mark experience.

Multi-Unit Install
13 neighbors recently requested a quote
Recommended by90%of homeowners
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A & A Electric
4.7(
13
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Williamson, NY and surrounding areas

Approved

In business since 1972

Free estimates

Customers say: Quick response

"Anthony was very attentive to my project on an old building. He sought out a safe and viable solution to change out an old fuse box and relocate with a new breaker box. He was quick with a response to my request, inspection and quickly gave a solution with a quote. Once I accepted, he scheduled my work right away. He was also prompt on the day of installation and did the work professionally and quickly. I recommend A & A Electric and I would even recommend Anthony to my family and friends. - Pastor Jeff"
Response time5 hrs
Recommended by91%of homeowners
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Avatar for Marlock Electric, Inc.
Marlock Electric, Inc.
4.1(
22
)
Fixed Generator - Install

Serving Williamson, NY and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Both the sales team and the installation crew were very professional"
Removing old HID Lamps
Inefficient HID Lighting
New LED Energy Efficient Lighting
Installing new LED Lighting
Installation in Progress

+61

Response time1 day
7 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for MDL Electrical Services, LLC
MDL Electrical Services, LLC
4.9(
8
)
Fixed Generator - Repair

Serving Williamson, NY and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"MDL installed new light fixtures in our basement. The work they did was excellent! Mike and his team were wonderful to work with on this project!"
Response time1 day
Recommended by75%of homeowners
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Avatar for Reliable Power Systems
Reliable Power Systems
4.8(
28
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Williamson, NY and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"Mike did an EXCELLENT job from start to finish making sure the generator was working properly. He fixed something others couldn’t fix, VERY satisfied with Mike and his company!"
Additional Photos
Additional Photos
Recommended by100%of homeowners
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Showing 1-10 of 24
Generator Install questions, 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. 

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.

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

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.

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 Williamson, 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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