How do I know what size of whole house generator to choose?

• <div><p>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. <a href="https://www.angi.com/articles/electrical-load-calculation.htm">Calculate your home’s electrical load</a> based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.</p></div>

Is it better to repair or replace a malfunctioning generator?

• <div><p>It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around <b>$300</b> on average, while <a href="https://www.angi.com/articles/how-much-does-it-cost-install-generator.htm">installing a new whole-house generator costs</a> around <b>$5,000 </b>on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.</p></div>

Get matched with top generator install pros in Constable, NY

Q: What happens if my whole-house generator is too small for my AC?

• <div><p>An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home&rsquo;s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.</p></div>

Q: Can you use your electric car as a backup battery?

• <div><p>If you&rsquo;re wondering <a href="https://www.angi.com/articles/using-electric-car-as-home-generator.htm">if you can use your electric vehicle as a backup battery</a>, 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.</p></div>

Q: How much energy can I expect a home wind turbine to generate?

• <div><p>Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home&rsquo;s needs. Accurate output estimates require a professional wind assessment and a review of your household&rsquo;s energy usage patterns.</p></div>

Q: Is it better to repair or replace a malfunctioning generator?

• <div><p>It&rsquo;s usually better to repair your generator if it isn&rsquo;t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around <b>$300</b> on average, while <a href="https://www.angi.com/articles/how-much-does-it-cost-install-generator.htm">installing a new whole-house generator costs</a> around <b>$5,000 </b>on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.</p></div>

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Verified Reviews for Generator Install pros in Constable, NY

*The Angi rating for Generator Install companies in Constable, 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 Constable, 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 June 06, 2026

Reviewed in June 2026
Charlie and his crew were on time, got right to work and did an awesome job. They cut the big willow and cleaned up all the same day. I highly recommend Charlie's Tree Service.
Charlie's Tree Service LLC
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Reviewed in November 2025
T&amp;B did work on our pier and beam foundation (not an option for type of work done in the drop down). Brian and his staff were very professional, kind and courteous and the job they did was even more than we hoped for. They were able to raise and level the house and added support with...
T&B NEXT LEVEL Construction LLC
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Reviewed in August 2025
Amazing work demolishing a collapsed structure and rebuilding a new 3-level shed onsite in the hottest part of the summer. Super communicative and flexible; fair prices; and always wanting us to be comfortable with unexpected changes in the work. Open and flexible with last-minute design...
Coal Hill Construction
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Reviewed in September 2024
What an awesome, efficient and courteous company. They really went above and beyond to make sure everything was done as quickly and efficiently as possible all while being super kind. I’d give 10 stars if I could.
JMA Construction
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Reviewed in February 2024
He did an amazing job working with old barn boards making window casings also some ceiling work in a tight space. Extremely satisfied with his work will definitely hire again!
R&T Contracting
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Reviewed in January 2024
Great. They showed up when they said they would.;
Allied Maintenance Solutions LLC
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Reviewed in June 2023
Adam was thorough in his inspection of our home. He spotted areas we needed to address and to improve upon. He was patient with us and walked us through the entire process giving us detailed explanations. I would definitely hire him again.
AB'S HOME INSPECTIONS
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Reviewed in December 2021
The work site was kept neat and clean and all tasks were conducted with utmost efficiency
Condor Painting
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Reviewed in June 2021
The whole project went quickly and now my radon levels are greatly reduced. The technician arrived on time and was very courteous.
A & R Environmental, LLC
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Reviewed in November 2020
Alex Willett was paid for over 15,000$ in home remodeling. He left the roof unfinished; no soffit and he didn’t do the roof on the porch at all. He left the bathroom unfinished. He failed to build a kitchen cabinet that he was paid in full for. After receiving payment he chose to ignore our...
Willett Construction
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Find Generator install pros in Constable

Wise Check Electric

5.0(

)

Fixed Generator - InstallFixed Generator - Repair

Serving Constable, NY and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"I am impressed with the professionals work, he worked fast and accurate; good results."

Recommended by100%of homeowners

Request Quote

Astar Heating & Air Conditioning Inc

4.8(

138

)

Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Constable, NY and surrounding areas

In business since 1976

Free estimates

Emergency services offered

"Aster evaluated the system and assisted us in determining the boiler/ water system best for us. Work was done over 3 days, everything was neat. Workers were very courteous."

Recommended by98%of homeowners

Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Constable, NY and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"It went great. Ken does great work. Would highly recommend him. Very knowledgeable and professional."

+15

Recommended by97%of homeowners

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Electrical Work By Marty

4.3(

)

Portable Generator - Install

Serving Constable, NY and surrounding areas

In business since 1992

Free estimates

"He hooked up carbon alarm. Fixed 2 breakers. Installed light fixture. Checked wiring in cellar. He was great knew what he was doing."

Response time8 hrs

Response rate97%

Recommended by83%of homeowners

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Clowney Electrical Services, Inc.

5.0(

)

Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Constable, NY and surrounding areas

In business since 2003

Free estimates

Credit card accepted

"He did everything he said he was going to do!"

Response time3 days

Recommended by100%of homeowners

Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Constable, NY and surrounding areas

In business since 2016

Free estimates

With over 9 years of experience, Slick Electric is the solution for all your electrical needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We develop lasting relationship so that the next time service is needed there is no question on who to call. Satisfaction guaranteed! Call us today!\n

Recommended by100%of homeowners

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Desotelles HVAC, Plumbing & Electrical Services

5.0(

)

Fixed Generator - RepairPortable Generator - Install

Serving Constable, NY and surrounding areas

In business since 1995

Free estimates

"Friendly and very informative. He told me ever step of the way on what he was doing and why. I would recommend this company to all !!"

Response time7 hrs

Recommended by100%of homeowners

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Anderson Water Systems Inc

3.1(

)

Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Constable, NY and surrounding areas

In business since 1994

Free estimates

Emergency services offered

"Removed my old water heater and placed a tankless water heater without any concerns. Took approx 8 hours to install, they were very clean and professional."

Recommended by61%of homeowners

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Generator Install questions, 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.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

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.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

The Constable, 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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Jul 10, 2026Jul 10, 2026
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Jul 9, 2026Jul 9, 2026
How Much Does a Whole-House Generator Cost? [2026 Data]
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•
Jul 8, 2026Jul 8, 2026
How Much Does a Natural Gas Generator Cost? [2026 Data]
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Dan Simms
•
May 21, 2026May 21, 2026
How to Hire a Generator Installer
Generators should give you peace of mind, but you’ll only get that if your installer knows what they’re doing. Learn how to hire a pro and what red flags to look for.
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Jul 9, 2026Jul 9, 2026
Who Installs Generators? A Complete Guide
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.