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Top-Rated Generator repair pros in Rancho Cucamonga - Updated Nov 2026

Gandzjuk Electric Incorporated
4.8(
129
)
Electric Vehicle Charging Station Installation - For Business - Materials Provided by ConsumerElectrical Switches, Outlets & Fixtures - Install or Repair - For BusinessElectrical Wiring or Panel Upgrade - For Business+3 more

Serving Rancho Cucamonga, CA and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"The company owner, Jacob came out to my property with one of his crew members to discuss the requested electrical work and provide an estimate taking all aspects of the job into consideration. Using digital tools, he provided a written estimate on the spot that I accepted. On the day scheduled for the job, Jacob and his team arrived on time. They walked through the property verifying the work that would be completed. The crew members were always focused on the job and were extremely conscientious. They took great care to protect the property with plastic sheets in all areas where they were working. An unforeseen problem was discovered during the job (some live wires that were disconnected and not capped off). The unsafe situation was resolved without any extra cost. The entire job was completed professionally and thoroughly and nothing was left undone. As I had questions during the job, they were addressed immediately. The crew members communicated with each other (even using their cell phones when one was in the attic or it was difficult to hear one another) throughout the job making sure they were working together to complete all requested tasks. Near the end of the day, Jacob returned to review all the work that had been done and to touch base with me with regard to my satisfaction with the work. When all work was completed, Jacob generated a digital invoice and sent it to me electronically. The service provided by Gandzjuk Electric was top notch. I will not hesitate to recommend this company to others."
Response time5 hrs
Response rate98%
Recommended by96%of homeowners
Avatar for Garafano Electric, Inc.
Garafano Electric, Inc.
4.8(
188
)
Electrical Wiring or Panel UpgradeElectric Vehicle Charging Station InstallationElectric Vehicle Charging Station Installation - For Business+12 more

Serving Rancho Cucamonga, CA and surrounding areas

Approved

In business since 1968

Free estimates

Warranties offered

"William and his team did a fantastic job upgrading our meter panel. They took care of all the permits and had the job done on time and on schedule. They were extremely communicative throughout the entire process and I would use them for all electrical services in the future."
Response time1 day
Response rate100%
1 neighbors recently requested a quote
Avatar for JDC Energy Solutions, Inc.
JDC Energy Solutions, Inc.
4.7(
98
)
Electric Vehicle Charging Station Installation - Materials Provided by ConsumerElectrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation - For Business - Materials Not Provided+4 more

Serving Rancho Cucamonga, CA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Loved working with JDC. They are attentive to detail, and they make sure the work is done in an efficient and effective manner. We got solar panels installed, and also a battery back up system. Great work from David who has been helping us, going beyond the basic call of duty. And from Anna in their billing department, who is very friendly and courteous to speak with."
200 Amp Panel
Tesla Powerwall
Solar Array
Solar Array
Inverters

+9

5 neighbors recently requested a quote
Recommended by92%of homeowners
Kevin Hernandez
4.9(
190
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectric Vehicle Charging Station Installation - Materials Provided by ConsumerElectrical Wiring or Panel Upgrade+5 more

Serving Rancho Cucamonga, CA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Kevin did a fantastic job on our panel upgrade. He arrived on time and quickly got to whipping up a quote on the spot. He gave us several options that were all reasonable and made sense such as a basic level panel swap and a higher tier panel with lots of expandability including solar-ready. He also gave some additional add-on options such as grounding rods and stucco repair which was greatly appreciated although ultimately we did not use. Not once did Kevin try to pressure us into purchasing these additional add-ons which is greatly appreciated. Kevin is a respectful and does not get pushy. He arrived in a very professional truck with an additional electrician. Together they were able to get all the work done within one day with minimal disruption. I also really appreciate how clean the stucco breakout was as I have seen other electricians just take a sledgehammer and really leave the stucco in bad shape. I would definitely recommend Kevin and I will be reaching out to him for any future work."
Response time9 hrs
13 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Casaroja Electric Inc
Casaroja Electric Inc
5.0(
19
)
Electrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation - Materials Not ProvidedElectric Vehicle Charging Station Installation - Materials Provided by Consumer+2 more

Serving Rancho Cucamonga, CA and surrounding areas

Approved

Emergency services offered

Warranties offered

Offers commercial services

"I got a few estimates to get more power out to my studio. Everyone quoted me about 4K to upgrade my panel and get dedicated line out to my studion. These guys were to only ones that looked for a better/more economical solution. I sent a pic of my panel and he remembered that I upgraded my kitchen a while back but noticed that my electric stove had it's own dedicated line. He asked me, did you convert to gas when you remodeled? I said yes and he said, great, we take the line that was dedicated to the stove and we use that. It saved me $1500 and it worked perfectly. I would absolutely hire again!"
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade

+1

1 neighbors recently requested a quote
Avatar for ZERO ELECTRIC
ZERO ELECTRIC
4.9(
17
)
Fixed Generator - InstallElectric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Wiring or Panel Upgrade+8 more

Serving Rancho Cucamonga, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

6 neighbors recently requested a quote
Recommended by41%of homeowners
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FAQs for generator repair projects in Rancho Cucamonga, CA

Always start by confirming the pro’s license number, insurance coverage, and experience level. Visit the electrician’s website, scan recent customer reviews, and verify credentials with your local labor department. Request proof of liability insurance and at least two references that you can contact. These quick checks take only a few minutes but go a long way toward ensuring safe, code-compliant work and protecting your home in the event of an issue.

Grouping several electrical jobs into one appointment means you pay a single service-call fee and one set of travel expenses. Instead of asking a pro to return three separate times for outlets, switches, and fixtures, have everything tackled in one visit. The electrician stays productive, and you avoid extra trip charges, often shaving a sizable chunk off the final bill without compromising quality.

DIY electrical work can be dangerous and, in many areas, illegal without a license. One miswired connection risks shocks, fires, or expensive damage. Licensed electricians carry the right tools, follow local code, and know how to shut down power safely before they start. Hiring a pro may cost more upfront, but it protects your home, family, and insurance coverage in the long run.

The Rancho Cucamonga, CA homeowners’ guide to generator repair services

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