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    Services - HL Voltage

    Electric inspection

    Electric installation or replacement

    Electric panel installation

    8 More Services

    Electric panel repair

    Electric repair

    Wire installation

    Wire repair

    Electric vehicle charging station installation

    Electric vehicle charging station repair

    Outlet installation

    Outlet repair

    HL Voltage Photos

    Recommended Reviews - HL Voltage

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    Reviews With Photos

    Unit 1 old 100A electrical panel
    Armando L.

    This review is way overdue!!! I've been busy remodeling all four rental units since I hired Diego and his team in September 2023, and I forgot to leave a review. HL Voltage upgraded two of the main electrical panels at two of my rental units in Signal Hill and did a complete rewire in one of the units. Diego and his team are very professional, friendly, and knowledgeable. I did have some light flicker after installation, and Diego and his team came out right away many times to make sure it was resolved. They informed me that the neutral power drop coming from Edison was an issue. I contacted Edison, and they fixed their issue! They provide excellent value for their work!

    Conduit work and EV Plug placement.
    Steven E.

    These guys are very professional and do a great job. I received a call from Diego the owner who is so professional. A great listener and he tries to understand all your requirements before speaking. He offered a free estimate and made recommendations for my EV install. He also said I did not have to do everything but they were recommendations for the future. There was no pressure. He later sent me a quote by text with what I wanted and options to consider. The EV circuit and the conduit work was top notch. All of his guys are super friendly and very courteous. Jose did my EV install and it was very clean and he made sure I was good with everything before he left. Also everything was cleaned up. Thanks HL Voltage for an awesome job.

    Path lights installed by HL Voltage (they better in real life than in this photo)

    Diego was a pleasure to work with, explaining all the options during the free estimate, and was able to complete several projects quickly! He was very flexible, and even came back to check on the project. I'm happy with the service and the newly installed lights, induction stove, and garage charger!

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    3 months ago

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    Photo of Diego A.

    Diego A.

    Thank you, Phyllis

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    6 months ago

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    Photo of Diego A.

    Diego A.

    Thank you Jason!

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    7 months ago

    HL Voltage is great! They have come to our rescue many times and make our home feel safer with the work they do. Can't recommend enough!

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    Photo of Diego A.

    Diego A.

    Thank you Taylor!

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    Photo of Armando L.
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    1 year ago

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    Photo of Diego A.

    Diego A.

    Thank you Armando!

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    9 months ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Ross!

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    5 months ago

    Business owner information

    Photo of Diego A.

    Diego A.

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    11 months ago

    Business owner information

    Photo of Diego A.

    Diego A.

    thank you, Isaac!

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    2 years ago

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    Photo of Diego A.

    Diego A.

    Thank you Steven. It was our pleasure working with you.

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    6 months ago

    Diego, George, AB, and team were all great; highly proficient at electrical work and troubleshooting!

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    Photo of Diego A.

    Diego A.

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    5 months ago

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    Photo of Diego A.

    Diego A.

    Thank you Douglass!!

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    6 months ago

    Good work and kept things professional Will recommend this company for your electric work

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    Photo of Diego A.

    Diego A.

    Thank you Nasreeen we appreciate it

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    6 months ago

    Great service. Clean and tidy. Excellent work. We had two new GFI outlets installed. Highly recommend.

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    Photo of Diego A.

    Diego A.

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    5 months ago

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    Photo of Diego A.

    Diego A.

    Thank you coco!

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    8 months ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Ned!

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    1 year ago

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    Diego A.

    Thank you Kevin!

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    1 year ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you, Alan!

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    Photo of Dan M.
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    6 months ago

    Best electrician in the south bay! Prompt, precise, and professional. Highly recommend.

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    Photo of Diego A.

    Diego A.

    Thank you Dan , it’s our pleasure!!

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    6 months ago

    Diego is very professional, knowledgeable, and thorough. He provided great, efficient service. I can't recommend him highly enough!

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    Diego A.

    Thank you James!

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    11 months ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you, Fransisco!

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    6 months ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Steve

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    9 months ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Sueanne!

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    1 year ago

    Business owner information

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    Diego A.

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    3 years ago

    Business owner information

    Photo of Diego A.

    Diego A.

    It was our pleasure working with you and Kat. Thank you!

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    11 months ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Louis!

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    1 year ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Thomas!

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    9 months ago

    Business owner information

    Photo of Diego A.

    Diego A.

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    1 year ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Suren!

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    1 year ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Carolynn!

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    2 years ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Molly!!

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    1 year ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Rex!

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    3 years ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you for the feed back. It was a pleasure working with you guys!

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    1 year ago

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    Photo of Diego A.

    Diego A.

    Thank you Sharon!

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    1 year ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Steve!

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    2 years ago

    Incredible work by Diego and his team. Highly recommend for any electric work. They were prompt, professional and affordable.

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    Photo of Diego A.

    Diego A.

    Thank you Seth!

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    1 year ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you John!

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    2 years ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Becky !

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    2 years ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you Rajan!

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    3 years ago

    Business owner information

    Photo of Diego A.

    Diego A.

    Thank you, ChrThank you Chris. It was a pleasure working with you.

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    3 years ago

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    Photo of Diego A.

    Diego A.

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    2 years ago

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    Photo of Diego A.

    Diego A.

    I’m glad I was able to help, thank you!

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    Page 1 of 2

    Ask the Community - HL Voltage

    Review Highlights - HL Voltage

    George was project lead and communicated thoroughly with us about our options and how it would impact the price.

    Mentioned in 6 reviews

    Read more highlights

    South Bay Electric Company

    South Bay Electric Company

    4.9
    (440 reviews)

    The South Bay Electric team provided us high quality work, on time and with exceptional…read moreprofessionalism. In 2025 they built us a new main panel, transformed our old panel into a sub panel of the new one and installed a new EV charger. They also put us in contact with a great stucco mason who we later used for additional repair work that we needed. This year they came by to disconnect an old hot tub and fit us into their schedule quickly. Highly recommended.

    Our garage light was flickering so badly it resembled a seizure trigger. I didn't know who to call,…read moreso I searched Yelp and found Ian Marsh of South Bay Electric. There were a series of excellent reviews. I sent hima a message and he got back to me right away. When we spoke, Ian himself walked me through the troubleshooting over the phone. He suggested it could be a bad bulb connection (take it out and clean the contacts) or an issue with the wall switch. Sure enough, it turned out to be our dimmer switch -- it just couldn't hold the charge properly and was causing the constant flickering. What really stands out is that Ian could have easily scheduled a service call and charged me a couple hundred bucks to come out. Instead, he gave me the exact fix for free and saved me the hassle and expense. In a world where so many companies push for paid visits, this level of honesty and helpfulness is rare and genuinely appreciated. While it cost me nothing, it cost him his time.I As a result, I promised Ian I'd write a glowing review, and here it is. If you're in the South Bay and need an electrician you can actually trust, call Ian Marsh South Bay Electric. Highly recommend! Rick

    Mario Castillo Electric

    Mario Castillo Electric

    4.8
    (289 reviews)

    Needed to get a panel upgrade and an EV charger installed. There's an open space between my panel…read moreand my garage, so I was told by other electricians that I'd have to get someone else to break the concrete because they don't do that. These guys were one of the few that could handle the concrete work, and they also handle all the permit work as well. Staff worked hard, finished everything quickly and made sure the work site was clean as a whistle after they finished. Everyone was really friendly, from the receptionist on the phone, the staff and the people giving me estimates. It's been more than a year since I got my EV charger installed, and I haven't noticed any problems since then. Price-wise, I feel it was pretty fair especially considering how they made everything so convenient. All in all, they did everything well. I'd have no problems recommending them to others, and will likely go back to them when I need other things addressed in the house.

    TL:DR Reasonable pricing, relatively quick appointments, and good quality work. The downside was…read morethat their communication wasn't great so there were miscommunications between various people there and I needed to be fairly persistent to make sure we moved things along and I got the work we requested. But all in all, I would use them again for sure - just knowing I might have to follow up from time to time. Longer review: we contacted them to give us a quote for a whole house fan and attic fan. Of the quotes we got, they were very reasonable and they also had appointments available relatively soon. The person who came for the quote wasn't sales-y either which was a plus. I won't go into details of the various hurdles to communicate with them but it just wasn't very smooth. When they came to do the attic fan first, they told me they could only do that because the whole house fan had not arrived yet. Then they installed it and forgot to install a switch which was part of the quote. When they came to do the whole house fan a week later, again they didn't know to install a switch for the attic fan. I also had trouble with the invoice. Ultimately, they had a good price and did good work so I'm satisfied but just couldn't give them 5 stars because the overall experience was a little clunky. That said, I would definitely use them again.

    HL Voltage - electricians - Updated July 2026

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