Get matched with top generator install pros in Pomona, CA

Q: What happens with the generator when the local power goes back on?

• <div><p>If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you&rsquo;ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.</p></div>

Q: Should I buy a solar battery or a generator?

• <div><p>If you&rsquo;re deciding between a <a href="https://www.angi.com/articles/solar-batteries-vs-generators.htm">solar battery versus a generator</a> for the best backup power solution, you can take a few factors into consideration. Solar batteries are quiet while generators can be quite loud. Generators have a lower up-front cost, but they require fuel and ongoing maintenance while solar batteries are more expensive but don&rsquo;t have many ongoing costs. </p></div>

Q: Do diesel generators have any important downsides?

• <div><p>While diesel is relatively stable, it won&rsquo;t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it&rsquo;s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn&rsquo;t always ideal for home use. </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>

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>

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Verified Reviews for Generator Install pros in Pomona, CA

*The Angi rating for Generator Install companies in Pomona, CA 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 Pomona, CA 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 September 29, 2025

Reviewed in September 2025
Cost was low and installers were very professional.
Felikian's Carpet/National Flooring Outlet
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Reviewed in September 2025
Great... Lee knows how to install electrical dimmer lights
Heavy Duty Electric
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Reviewed in June 2025
Hector did great on the installation!!
Felipe Handyman Services
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Reviewed in May 2025
It was amazing that Chris installed the EV so quickly with competitive price. I strongly recommend to choose Flo-Electric company for EV installers.
Flo-Electric
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Reviewed in June 2023
My electrician was Vito. He came to install an electric vehicle charger. He explained the procedure before he installed the charger. We decided on a location for the charger and he got started and did an excellent job.
Mr. Electric of Ontario
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Reviewed in December 2022
Prompt installation when a/c failed in heat of summer.
Sears Roofing
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Reviewed in September 2022
First class installation. We'll equipped and knowledgeable installers.
LT Generators
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Reviewed in February 2022
the installers were very very good
Empire Today - Los Angeles
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Reviewed in October 2021
John did a great job! He installed a circuit branch from our breaker to our new electric cooktop, and did it all in an afternoon. He even offered to vacuum some of the debris the installation team left behind earlier in the day. Very professional and efficient!
Green Electric Solutions
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Reviewed in September 2021
Tommy with New Generation was great from start to finish. He responded to my request right away. He was able to do my install of 2 beautiful French doors in a very timely fashion which was huge to me. His price for the install was very fair and reasonable. He always kept me informed. He was...
Divine Door Works
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Find Generator install pros in Pomona

Casaroja Electric Inc

5.0(

)

Fixed Generator - InstallPortable Generator - Install

Serving Pomona, CA and surrounding areas

Approved

Emergency services offered

Warranties offered

Offers commercial services

"Sergio and his assistant installed an EV charger at my place, and they did an amazing job. I’m so glad I hired them. Their price was reasonable compared to other contractors. I highly recommend them and would definitely use their company again for any future jobs."

2 neighbors recently requested a quote

Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+1 more

Serving Pomona, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Credit card accepted

"My experience with Zero Electric was great! James was extremely knowledgeable about home generators and walked us through several pricing options that fit our budget. Their work was clean and efficient and I will definitely be hiring him in the future for our electrical issues."

5 neighbors recently requested a quote

Recommended by43%of homeowners

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Quality Electric Corp

5.0(

)

Fixed Generator - Install

Serving Pomona, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Credit card accepted

"I needed a fan installed in my garage and Quinn came and installed my fan. He also changed out some plugs that were bad. He did a great job and I would definitely call Quality Electric again."

Response time3 hrs

Response rate97%

1 neighbors recently requested a quote

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Solar Service Professionals, Inc.

4.9(

)

Fixed Generator - RepairGenerator - Repair - For Business

Serving Pomona, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"The installation Tech was very thorough and kept me informed while working at my house. Friendly and knowledgeable."

Solar Panel Re-install After Roof Repair

+298

Recommended by67%of homeowners

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

Serving Pomona, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"The electricians installed two outlets and one LED light fixture in a very professional manner. They provided good advice and suggested that I consider rejunvenating my electrical panel as my home is now 26 years old without pressuring me to have it done immediately. I will definitely consider Trout Electric when I decide to have it done."

Recommended by88%of homeowners

Portable Generator - InstallPortable Generator - Repair

Serving Pomona, CA and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"Ricardo is the best electrician I?ve ever hired. Was very professional and friendly to talk to. Honest pricing for a meter panel upgrade. Did what he said he was going to. Also checked out some lighting fixtures I wanted to get installed in my home as I?ve had several quotes and they were just outrageously priced but he gave me the best price out of 6 electricians! Will definitely hire Rick for all my future electrical needs!!"

Response time10 hrs

4 neighbors recently requested a quote

Recommended by45%of homeowners

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Mr. Electric of Ontario

5.0(

)

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

Serving Pomona, CA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

When it comes to electrical work, Mr. Electric®, a Neighborly® company, has the power to make things better. When you need a licensed professional who will get the job done right the first time, give Mr. Electric a call. \n\nWe strive to provide professional service on every visit so that your home or business is safe, efficient, and convenient. For electrical panel upgrades to generator installations, outlet upgrades to surge protection, smart home installation to custom lighting solutions, and so much more, you can trust the pros at Mr. Electric.

+17

2 neighbors recently requested a quote

Recommended by100%of homeowners

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Home Pro Remodeling & Construction, Inc.

4.1(

)

Portable Generator - Repair

Serving Pomona, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"I hired home pro remodeling to put pavers on my back yard and to install flloring thorough out the whole house I'm super setasfied with the work and the service . The company also provided me great financial options which I used thank you kobi Leo and Lucas for your great service . Highly recommend them for everyone"

Response time5 days

Recommended by77%of homeowners

Fixed Generator - RepairGenerator - Repair - For Business

Serving Pomona, CA and surrounding areas

Approved

In business since 2012

Emergency services offered

Warranties offered

"Tech was on time friendly and professional. Thorough and diagnosed the issue Waiting to hear about parts and installation. So far 5 stars."

+20

Response time1 day

Response rate97%

7 neighbors recently requested a quote

Portable Generator - Repair

Serving Pomona, CA and surrounding areas

Approved

Small jobs welcome

"Rapid aid and did a great job. Small projects that were pending to be finished. He came in and finished everything timely and well."

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Showing 1-10 of 205

Generator Install questions, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

If you’re deciding between a solar battery versus a generator for the best backup power solution, you can take a few factors into consideration. Solar batteries are quiet while generators can be quite loud. Generators have a lower up-front cost, but they require fuel and ongoing maintenance while solar batteries are more expensive but don’t have many ongoing costs.

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

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.

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.

The Pomona, CA 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

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Mar 26, 2026Mar 26, 2026
How Much Does Whole-House Generator Installation Cost in Los Angeles, CA? [2026 Data]
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Generator Installation: Everything You Need to Know
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