What size generator do I need for a 1500-square-foot house?

• <div><p>A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the <a href="https://www.angi.com/articles/how-many-watts-house.htm">total wattage</a> of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.</p></div>

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Q: Do you have to turn off the main breaker when using a generator?

• <div><p>As a safety measure, you should always turn off the main breaker while operating your generator&rsquo;s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.</p></div>

Q: Where can you install a whole-house generator?

• <div><p>Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.</p></div>

Q: Can I use a generator to charge a back-up battery?

• <div><p>Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.</p></div>

Q: What size whole house generator do I need to run central AC?

• <div><p>To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right <a href="https://www.angi.com/articles/whole-house-generator-sizing.htm">generator size</a>. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.</p></div>

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Verified Reviews for Generator Install pros in Rocky Ford, CO

*The Angi rating for Generator Install companies in Rocky Ford, CO 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 Rocky Ford, CO 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 01, 2025

Reviewed in June 2025
Jack is a great installer, highly recommend.
321 Epoxy Flooring
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Reviewed in December 2024
Most important thing is Bob does what he says he will do. Second thing; he has the skill set to actually follow through with high quality work. Plus he has a great personality and just a nice person. We hired Bob 3 times so far; he install a vent in our generator shed to relieve the excess hot...
Handyman Bob
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Reviewed in November 2024
They didn't have an option for "What work did you needdone." I was forced to pick a generic option. I hired them in August to remove clay, add good soil and install sod. They ran out of soil. One of the workers left and got soil but it was different soil then what was used. No...
RDS Hardscape Service
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Reviewed in December 2023
David and team were responsive, reasonably priced, and did a high quality job on our interior and exterior paint job. He also turned us onto a general contractor who has beautifully handled our overall home renovation.
Dapp Painting & Drywall
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Reviewed in December 2023
We have used Nate / PureBuilt construction for many different projects from general contracting, remodel, trim work, and more and would highly recommend his services!
Pure Built Construction LLC
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Reviewed in November 2020
Bathroom completely remodeled in 2018. Started off ok, but ended up with a poor quality remodel that essentially needs to be gutted not even 3 years later. Owner was present and keeping track of the project at first, but it seemed like he had moved on to other projects before long, opting to...
WCH improvedhomes
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Reviewed in November 2017
Very professional. Very fast. Some obvious flaws. In general cool.
Creative Masonry
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Reviewed in August 2017
Kristin was very helpful and took the time to give me a lot of helpful information so I will be prepared to get a generator. She basically gave me a generator 101 lesson. I appreciated her knowledge and the time she spent with me. I would use their service in the future.
SPECTRUM ELECTRIC LTD
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Reviewed in June 2017
Showed up on time and was affective in installing system. Could use more training on electrical installation.
Affordable Radon Services
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Reviewed in September 2013
I provided paint, but evidently, and unbeknownst to me, it was not the correct paint. The installer called and I asked him to contact the building manager to find out what he correct paint was. I never heard back from the installer. When I arrived at the condo, I was shocked to see that the...
California Closets of Denver
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Find Generator install pros in Rocky Ford

Becks Communications, Inc.

Becks Communications, Inc.

Customers say: Quick response

Recommended by 100% of Angi customers

18 local quotes requested

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"-"

Rob B on July 2024

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Rob B on July 2024

Tools & Toys Small Engine Repair Company

130 N. 3rd Street

No reviews yet

Tools & Toys Small Engine Repair Company

130 N. 3rd Street

No reviews yet

13 years of experience

Small engine shop that also has a Master Sharpening Service and Plastic Welding/Repair Services. We also specialize in scooters, mopeds, motorcycles from repairs to mods and tuning to full restorations. Please check out our website for more information. Our prices are the best and we will not only match but beat any other business's quote in the area.

My Classic Car Trader LLC

312 Prospect Ave

2.00(

)

My Classic Car Trader LLC

312 Prospect Ave

2.00(

)

53 years of experience

Sales, Service & Rebuilding of Antique and Classic Car Components such as, Carburetors, Starters, Generators, Fuel Pumps, Double & Single Action Fuel Pump Rebuilding, Water Pumps, Hydraulic Top Pumps, Distributors, and DELCO Knee Action Shocks, We also carry a complete line of NOS and NORS parts. We offer FREE Technical advice for any YEAR Classic Car 609-462-7412

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

June Creek Electric

1124 Airport Rd

5.00(

)

June Creek Electric

1124 Airport Rd

5.00(

)

Customers say: Quick response

Recommended by 100% of Angi customers

Service Electrical Contractor Service Calls Repair Remodel New Construction Residential and Commercial One man shop offering a Master Electrician on Call Design/Build Company www.junecreek.net

ADAMS ELECTRIC

320 S SANTA FE AVE

5.00(

)

ADAMS ELECTRIC

320 S SANTA FE AVE

5.00(

)

Customers say: Quick response

35 years of experience

ADDITIONAL SERVICE AREA: TO THE KANSAS BORDER.

Generator Install questions, answered by experts

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

The Rocky Ford, CO 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
•
Oct 29, 2025Oct 29, 2025
How Much Does It Cost To Install a Generator Transfer Switch? [2025 Data]
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Elisa Greenberg
•
Aug 14, 2025Aug 14, 2025
How Much Does a Whole-House Generator Cost? [2025 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.
Breyden Kellam
•
Oct 30, 2025Oct 30, 2025
How Much Does Whole-House Generator Maintenance Cost? [2025 Data]
Keeping on top of generator maintenance and repairs gives you extra peace of mind as a homeowner. Find out how much regular generator maintenance costs.
Breyden Kellam
•
Mar 14, 2025Mar 14, 2025
Propane vs. Natural Gas Generator: What’s the Difference?
Struggling to choose the best generator for your electricity needs? Compare propane vs. natural gas generators to help you make the right choice.
Michelle Nati
•
Mar 14, 2025Mar 14, 2025
Whole-House Generator Sizing: Everything You Need to Know
Whole house generator sizing can be tricky to figure out if you don’t know a few key factors. Our guide can help you determine what size works best for your needs.
Tyler Lacoma
•
Mar 10, 2025Mar 10, 2025
How Do Whole-House Generators Work?
Whole house generators are a power alternative that can deal with frequent blackouts and other problems. Here’s how they function.