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Anderson Water & Power
4.4(
618
)
Fixed Generator - Install

Serving Avon, 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

Response time2 days
194 neighbors recently requested a quote
Recommended by89%of homeowners
John Betlem Heating & Cooling Inc - Electrical
4.7(
157
)
Fixed Generator - Install

Serving Avon, 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.

63 neighbors recently requested a quote
Recommended by91%of homeowners
Reliable Power Systems
4.8(
53
)
Fixed Generator - RepairGenerator - Repair - For Business

Serving Avon, 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
McMichael Electrical Contractors, Inc.
5.0(
2
)
Fixed Generator - Install

Serving Avon, NY and surrounding areas

In business since 2000

Free estimates

At McMichael Electrical Contractors, Inc., we pride ourselves on providing quality service that our customers can believe in! Whether it is panel upgrades, service work, or generator installations, we can take care of all of your electrical needs! We service Keuka Park and the surrounding areas! \n

Response time1 day
Recommended by100%of homeowners
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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.

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

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.

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 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 Avon, NY homeowners’ guide to generator installs

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