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>

Can a natural gas generator work without electricity or in a power outage?

• <div><p>Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a <a href="https://www.angi.com/articles/cost-install-generator-transfer-switch.htm?entry_point_id=33797025">transfer switch</a> (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.</p></div>

Get matched with top generator install pros in Madrid, NY

Q: What is the life expectancy of a whole house generator?

• <div><p>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.</p></div>

Q: Do natural gas generators produce carbon monoxide?

• <div><p>If you&rsquo;re wondering <a href="https://www.angi.com/articles/do-natural-gas-generators-produce-carbon-monoxide.htm">whether gas generators produce carbon monoxide</a>, know that natural gas generators do not produce carbon monoxide if they are functioning properly, as natural gas burns cleanly. However, if the generator malfunctions and the gas does not burn completely, there is potential for carbon dioxide to be produced. To prevent malfunctions, it's crucial to perform regular maintenance, including running the generator weekly and scheduling professional inspections every<b> 6 to 12 months</b>. Also, be sure to test your carbon monoxide detectors regularly to ensure they function in the rare case of the generator producing carbon monoxide.</p></div>

Q: Can a portable generator power an entire home?

• <div><p>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 <a href="https://www.angi.com/articles/installing-whole-house-generator.htm">whole-home generator</a> instead. </p></div>

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Verified Reviews for Generator Install pros in Madrid, NY

*The Angi rating for Generator Install companies in Madrid, 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 Madrid, 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 February 07, 2026

Reviewed in February 2026
Seth did a great job installing a closet door for our rescue. He was informative every step of the way and meticulous to make sure it was cut down to fit properly.
Seth Doxtader
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Reviewed in June 2024
We purchased a property that had just had a new septic tank installed by another company. GCA fixed their mess and did a fantastic job!
GCA Excavating & Land Clearing
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Reviewed in May 2023
We had the absolute best experience with Jeremy and his team and highly recommend their service. We wanted our inground pool opened in early May this year, along with a heater installation. TBTS stayed in touch with us throughout the entire process and kept to the particular date that we were...
Touched By The Sun Pools
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Reviewed in April 2023
We have had nothing but fantastic service from these folks. They installed a new furnace and central air conditioner. Signed us up for yearly cleaning on both. They are respectfull and forthcoming. Email friendily and more. Thank you for all the great service.
Bronson's One Hour Heating & Air
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Reviewed in March 2023
Rob and his crew installed cultured stone on a large exterior chimney and around the perimeter of our house. His estimate was considerably less than others and he was on site during all phases of construction. The completed work was stunning! He is honest hard working and always answered his...
Laws Masonry & Construction, Inc.
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Reviewed in October 2022
Richard Davis was a very friendly person and projected confidence about construction work. Though he may be good at mechanical construction, I learned at a cost and too late that he does not know enough about electrical entrance upgrades. I accepted his quote but he did not complete the work as...
Dastconstruction
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Reviewed in October 2022
Josh has done many projects for us. This last one was a complete replacement of our boiler system. We had just bought the house in January and have had numerous problems. Here is a list: new water softner, new holding tank, many new valves, work on the old boiler system. We had no heat or...
J&J Plumbing and Home Repair
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Reviewed in January 2021
Samson installed two exterior doors for us - he came out the day after we contacted Home Advisor, provided a fair quote and did the work the same work as agreed. He arrived on time, kept us up to date on progress and the work was of a very professional quality. We would recommend him.
Mr. Fixit
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Reviewed in May 2020
Very good value, premium equipment, excellent installation. We have had our system for a year and have had no issues.
Baker Mechanicals, Inc
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Reviewed in December 2019
Prompt; professional; competent; courteous; finished outside electrical installation job in record time notwithstanding heavy snow and cold temperatures; reasonable price; highly recommend him!
New Life Remodeling
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Find Generator install pros in Madrid

Hurricane Home Solutions, Inc.

4.6(

245

)

Fixed Generator - Install

Serving Madrid, 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."

Response time11 hrs

Response rate100%

14 neighbors recently requested a quote

Fixed Generator - InstallFixed Generator - Repair

Serving Madrid, 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 Madrid, 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 Madrid, NY and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"Excellent! Professional and friendly, responded quickly. I needed same day repair because I was leaving town and the job was completed within a few hours of calling for service. I will definitely call again for other projects."

+15

Recommended by97%of homeowners

Fixed Generator - InstallGenerator - Install - For Business

Serving Madrid, NY and surrounding areas

In business since 2018

Free estimates

Credit card accepted

"I required a new water heater installed and Diana builders were able to give me the exact water heater I wanted at the most competitive price. Dave took the time to explain what he thought the best solution was in plain English, gave me a quote a few hours later after researching his exact costs and stuck to his quote."

Response time1 day

Response rate92%

Recommended by100%of homeowners

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Electrical Work By Marty

4.3(

)

Portable Generator - Install

Serving Madrid, 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

Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Madrid, NY and surrounding areas

In business since 1994

Free estimates

Credit card accepted

"Very nice guy who did the installation of our ceiling fan quickly and efficiently. The ultimate professional! Affordable and went out of his way to drive to our location. Will be calling on him again with any electrical needs we may have."

Response time4 days

Recommended by80%of homeowners

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

Serving Madrid, NY and surrounding areas

In business since 2016

Free estimates

"They do very good work."

Recommended by100%of homeowners

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Anderson Water Systems Inc

3.1(

)

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

Serving Madrid, 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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Maverick's Construction

3.3(

)

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

Serving Madrid, NY and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"He was quick and efficient."

+18

Response time1 day

Response rate86%

Recommended by66%of homeowners

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Showing 1-10 of 11

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.

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.

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

If you’re wondering whether gas generators produce carbon monoxide, know that natural gas generators do not produce carbon monoxide if they are functioning properly, as natural gas burns cleanly. However, if the generator malfunctions and the gas does not burn completely, there is potential for carbon dioxide to be produced. To prevent malfunctions, it's crucial to perform regular maintenance, including running the generator weekly and scheduling professional inspections every 6 to 12 months. Also, be sure to test your carbon monoxide detectors regularly to ensure they function in the rare case of the generator producing carbon monoxide.

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 Madrid, NY homeowners’ guide to generator installs

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

See all articles

Alison Kasch
•
Jul 10, 2026Jul 10, 2026
How Much Does It Cost to Install a Generator Transfer Switch? [2026 Data]
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Taylor Freitas
•
Jul 9, 2026Jul 9, 2026
How Much Does a Whole-House Generator Cost? [2026 Data]
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
Alison Kasch
•
Jul 8, 2026Jul 8, 2026
How Much Does a Natural Gas Generator Cost? [2026 Data]
Natural gas generators are whole-home standby generators that are connected to your home’s natural gas line. The average cost for a natural gas generator is $12,000.
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.
Heather Ayer
•
Jul 8, 2026Jul 8, 2026
Whole-House Generator Installation: A Complete Guide
Whole home generator installations require a professional hand. Read this guide to help you decide which generator is best for your home.
Becca Lewis
•
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.