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Verified Reviews for Generator Install pros in Farmington, NY

*The Angi rating for Generator Install companies in Farmington, 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 Farmington, 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 22, 2025

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Avatar for John Betlem Heating & Cooling Inc

John Betlem Heating & Cooling Inc

4.72(
144
)
•Approved Pro

John Betlem Heating & Cooling Inc

4.72(
144
)
•Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
1941 years of experience

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. John Betlem is a premier family operated solutions provider, passionately committed to the health, safety, and comfort for all they serve.

"The work was done quickly and efficiently. The guys did a great job installing the switches I needed and cleaned up when done with the work. thank you"

Suzanne S on November 2025

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. John Betlem is a premier family operated solutions provider, passionately committed to the health, safety, and comfort for all they serve.

"The work was done quickly and efficiently. The guys did a great job installing the switches I needed and cleaned up when done with the work. thank you"

Suzanne S on November 2025

Avatar for Excellent Air Heating & Cooling

Excellent Air Heating & Cooling

4.89(
104
)

Excellent Air Heating & Cooling

4.89(
104
)
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

Keeping you safe, comfortable, and efficient. We are a family owned and operated business with over 30 years experience in the heating and cooling profession. We are indoor air quality specialists able to meet all of your heating, cooling and air quality needs. Our customer's concerns are highly valued and we look forward to creating a solution that exceeds our customer’s expectations. We are only a phone call away. Additional email - [email protected]. Award winning.

"I'd been a customer of Excellent Air for over 10 years and during that time they had been reasonably priced and competent. However, in 2019 I noticed that the upper level of my home (I have a 3-zone system) was not cooling properly. They refused to address the issue and instead blamed the Nest thermostat I'd installed myself. It seems that if you install anything on your own, they're not interested in addressing issues. This issue went on for a year and when I expressed frustration with the situation, they basically said they didn't want me as a customer any more. I hired another HVAC company (JJB Mechanical) and they were quickly able to determine that the problem was a broken damper on the upstairs zone. What really irks me is that the guy from Excellent Air noticed that the cover for that damper motor was loose, so he just reattached it rather than actually checking the motor itself. So, I chalk it up to either laziness or incompetence. The bottom line is that for over a decade Excellent Air provided me with quality service. But to drop me as a customer over something that they should have been able to easily detect and fix speaks very poorly of either their newer technicians or corporate policy."

Brian B on February 2021

Keeping you safe, comfortable, and efficient. We are a family owned and operated business with over 30 years experience in the heating and cooling profession. We are indoor air quality specialists able to meet all of your heating, cooling and air quality needs. Our customer's concerns are highly valued and we look forward to creating a solution that exceeds our customer’s expectations. We are only a phone call away. Additional email - [email protected]. Award winning.

"I'd been a customer of Excellent Air for over 10 years and during that time they had been reasonably priced and competent. However, in 2019 I noticed that the upper level of my home (I have a 3-zone system) was not cooling properly. They refused to address the issue and instead blamed the Nest thermostat I'd installed myself. It seems that if you install anything on your own, they're not interested in addressing issues. This issue went on for a year and when I expressed frustration with the situation, they basically said they didn't want me as a customer any more. I hired another HVAC company (JJB Mechanical) and they were quickly able to determine that the problem was a broken damper on the upstairs zone. What really irks me is that the guy from Excellent Air noticed that the cover for that damper motor was loose, so he just reattached it rather than actually checking the motor itself. So, I chalk it up to either laziness or incompetence. The bottom line is that for over a decade Excellent Air provided me with quality service. But to drop me as a customer over something that they should have been able to easily detect and fix speaks very poorly of either their newer technicians or corporate policy."

Brian B on February 2021

HOME POWER SYSTEMS

4.95(
21
)

HOME POWER SYSTEMS

4.95(
21
)
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

Home Power Systems is a unique and focused company specializing in the sales, installation and service of Generac / Guardian automatic home standby and commercial generators. Our company philosophy is quality, integrity and trust. These values fuel our business. PLEASE NOTE: We do not monitor this accounts messaging feature. If you wish to reach out to us please do so through our website, thank you.

"Excellent, the sales person Rusty was very nice and covered everything very well. The group that did the install also did a very good job, no issues."

CHERYL O on October 2019

Home Power Systems is a unique and focused company specializing in the sales, installation and service of Generac / Guardian automatic home standby and commercial generators. Our company philosophy is quality, integrity and trust. These values fuel our business. PLEASE NOTE: We do not monitor this accounts messaging feature. If you wish to reach out to us please do so through our website, thank you.

"Excellent, the sales person Rusty was very nice and covered everything very well. The group that did the install also did a very good job, no issues."

CHERYL O on October 2019

Avatar for Reliable Power Systems

Reliable Power Systems

5.00(
25
)

Reliable Power Systems

5.00(
25
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Reliable Power Systems (RPS) can design, install, repair and maintain standby or backup power systems. We routinely provide these services for both residential and commercial applications. We will listen to your needs, educate you on your options and provide the best solutions. RPS technicians are extensively trained to provide the highest level of competent, efficient and courteous service.

"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!"

Charles B on December 2020

Reliable Power Systems (RPS) can design, install, repair and maintain standby or backup power systems. We routinely provide these services for both residential and commercial applications. We will listen to your needs, educate you on your options and provide the best solutions. RPS technicians are extensively trained to provide the highest level of competent, efficient and courteous service.

"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!"

Charles B on December 2020

Avatar for Milner Air Conditioning Services, Inc.

Milner Air Conditioning Services, Inc.

5.00(
7
)

Milner Air Conditioning Services, Inc.

5.00(
7
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Complete Residential and Commercial heating and cooling system services including design, installation, service, repair and renovation. Lifetime workmanship guarantee provided we perform the periodic maintenance services. Highest consumer rating

Complete Residential and Commercial heating and cooling system services including design, installation, service, repair and renovation. Lifetime workmanship guarantee provided we perform the periodic maintenance services. Highest consumer rating

Avatar for Valley Mechanical

Valley Mechanical

4.38(
24
)

Valley Mechanical

4.38(
24
)
Customers say: Quality work
1999 years of experience

At Valley Mechanical, we pride ourselves on delivering the finest in plumbing, heating & air and water treatment services. You can be assured of prompt and reliable service from experienced, skilled and friendly technicians; the highest-quality equipment and parts; repairs and installations done right the first time and our 100% satisfaction guarantee. We’re recognized throughout Ontario County, NY, for our commitment to providing dependable service at a fair price every single visit. Give us a call for all your sales, service and repair needs, from a furnace inspection, cleaning and tune-up to installation of a new boiler. We look forward to earning your business. Emergency services available to our existing clientele.

At Valley Mechanical, we pride ourselves on delivering the finest in plumbing, heating & air and water treatment services. You can be assured of prompt and reliable service from experienced, skilled and friendly technicians; the highest-quality equipment and parts; repairs and installations done right the first time and our 100% satisfaction guarantee. We’re recognized throughout Ontario County, NY, for our commitment to providing dependable service at a fair price every single visit. Give us a call for all your sales, service and repair needs, from a furnace inspection, cleaning and tune-up to installation of a new boiler. We look forward to earning your business. Emergency services available to our existing clientele.

Avatar for NEW YORK STATE SITEPOWER CORP.

NEW YORK STATE SITEPOWER CORP.

4.50(
4
)

NEW YORK STATE SITEPOWER CORP.

4.50(
4
)
Customers say: True professional
1999 years of experience

Emergency Generator Systems - Our SERVICE is the difference! As true generator-only contractor, NEW YORK STATE SITEPOWER offers expert generator sales, quick service & complete installations for residential & commercial applications. Generators are not a sideline for us, it is our core business. As one of the oldest and most respected generator dealers in upstate New York, we are the leaders in quality, service & reliability. From concept to completion we help find and implement the most appropriate & reliable backup solution for your needs. Thousands of home and business owners have already placed their trust in us to successfully install and maintain their emergency generators – why wouldn’t you too? Call us today! Check us out online at www.nys-spc.com Or on Facebook at: www.facebook.com/NYSSP

"Excellent detail consideration from the size of generator to installation and start up. Very professional! I would highly recommend this company."

Will G on November 2020

Emergency Generator Systems - Our SERVICE is the difference! As true generator-only contractor, NEW YORK STATE SITEPOWER offers expert generator sales, quick service & complete installations for residential & commercial applications. Generators are not a sideline for us, it is our core business. As one of the oldest and most respected generator dealers in upstate New York, we are the leaders in quality, service & reliability. From concept to completion we help find and implement the most appropriate & reliable backup solution for your needs. Thousands of home and business owners have already placed their trust in us to successfully install and maintain their emergency generators – why wouldn’t you too? Call us today! Check us out online at www.nys-spc.com Or on Facebook at: www.facebook.com/NYSSP

"Excellent detail consideration from the size of generator to installation and start up. Very professional! I would highly recommend this company."

Will G on November 2020

Lewis Electric and Power

5.00(
4
)

Lewis Electric and Power

5.00(
4
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Lewis Electric is committed to provide quality residential and commercial electrical work at a reasonable cost to the consumer. We also provide telephone, television, and data wiring. Lewis Electric donates time to local organizations whenever possible.

Lewis Electric is committed to provide quality residential and commercial electrical work at a reasonable cost to the consumer. We also provide telephone, television, and data wiring. Lewis Electric donates time to local organizations whenever possible.

Showing 1-10 of 21
Generator Install questions, answered by experts

Yes, whole-house generators run constantly for extended periods. Whole-house generators can run for longer periods of time than portable generators, but be careful. First, they may need regular applications of engine oil (as frequently as daily), depending on the engine design. Second, running constantly for several days will increase the wear and tear on the generator and shorten its lifespan.

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 watts

Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running. 

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 Farmington, 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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