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    Recommended Reviews - Volta

    Your trust is our priority, so businesses can't pay to alter or remove their reviews. Learn more about reviews.

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    8 months ago

    Volta provided us great service for our HVAC system. James is super helpful and friendly.

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    2 years ago

    I needed my refrigerator fixed and they were quick to respond, easy to deal with and on time.

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    3 years ago

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    3 years ago

    Great service! Figured out the problem, and it was something I could fix, and there was no hard sale to have it fixed by the tech.

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    2 years ago

    David came to the rescue! He was fast and he fixed it on the same day. He was very friendly and helpful. Thank you so much!

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    3 years ago

    Very responsive and very fairly priced. Came out to repair within a few hours. Extremely courteous as well. Highly recommend

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    2 years ago

    Easy set up and fixed in a timely manner. The price was fair and I would recommend them anytime

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    Review Highlights - Volta

    “James, the technician, showed up right on time, diagnosed the issue and explained what needed to be ordered.”

    Mentioned in 48 reviews

    Read more highlights

    You might also consider

    VIP Plumbing & Water Heaters - Need plumbing help? Call us at 925-222-5590

    VIP Plumbing & Water Heaters

    (181 reviews)

    Very accommodating and professional. Was able to fix my gas meter so that I could pass inspection.read more

    Our home was struggling with very unstable temperature of water flow in all of our showers for…read morealmost 2 weeks. The water was getting colder. Finding the right plumber could be difficult especially when some companies want to charge a diagnosis fee right away. So I had to research more carefully when deciding which plumbing companies to ask. My neighbor had the same issue and recommended Vincent of VIP Plumbing. His company offered free quotes. We spoke on Sunday and he was able to fit me in his schedule the next day. He txted me within the 2 hr window he gave me and arrived before the window ended. Vince immediately knew what the issue was beyond the faulty check valve, he identified that my thermal expansion tank was also broken. He had both parts in his truck so I didn't have to wait for him to come back another day. I also asked him to service our water heater since we never had any official services before. He took about an hr for everything. Left the area clean & tidy before departure. Now we have our hot water back and functioning. I will contact him again for future services. He definitely knows Rinnai tankless water heaters. What a lifesaver! Thanks again. His pricing is comparable to other plumbers with Rinnai expertise claims. I think what set him apart was his availability and he wasn't pushy. Best way to contact him is to call him directly or txt him.

    Water Heaters Masters

    Water Heaters Masters

    (847 reviews)

    After getting a very high quote from a major plumbing chain, we decided to contact Water Heater…read moreMasters. We had an absolutely fantastic experience with Water Heater Masters. Alex sent our technician, Rojo, who helped install a new 40-gallon gas water heater in our indoor utility closet, and he was incredibly diligent, professional, and efficient from start to finish. Installing a tank in an inside closet can be tricky, but Rojo handled the entire job seamlessly in just 2 hours. He replaced everything with high-quality components, including: * New hot and cold water flex lines * A brand new water shut-off valve * A new gas flex line and sediment trap * Fully reworked earthquake straps (to meet California safety codes) * Properly updated T&P line and venting He also took care of the removal and disposal of our heavy 18 yr old tank, leaving the utility closet completely clean. If you want fair pricing, expert specialized service, and a technician who respects your time and home, call Water Heater Masters and ask for Rojo. Highly recommended!

    We were replacing a gas water heater with a hybrid electric heat pump water heater. Generally, this…read moretype of heater costs twice as much (price and installation) as a traditional electric water heater, but costs a lot less to run (and therefore you recoup the additional cost in a few years from lower operating costs). I had a very easy experience getting an on-site quote. I received 3 quotes for this job. 2 quotes, including this one, came in around $7100. I went with a third one at around $6700 (which included an additional mixing valve) and am very happy with my decision. Overall price was not a big part of my decision, but brand of water heater was. After doing some research online, the most recommended brands are AO Smith and Rheem (GE). Both higher quotes were for Navien, which has only been making heat pump water heaters for 1 year, but I was told that it is the most reliable brand. I did not understand how this claim could be made, given how short the duration of evaluation for this product. Even the worst appliances usually work for at least a year. So I requested a quote for AO Smith or Rheem, which I did not get. I'm not sure why my brand request was not honored, but it made me question whether I should go with a company that either has communication issues or maybe some type of deal with Navien that I was not informed about. Many water heater installers are preferred installers of certain brands, which means they can get better pricing, etc. I did not want to be a guinea pig for Navien.

    Bay Area Water Heaters - Perfectly installed commercial water heater.

    Bay Area Water Heaters

    (619 reviews)

    We used this company in July of 2026 and they were great. We had been smelling a slight gas smell…read morein our garage for a number of months. The smell was not consistent. It only occurred when the weather was hot. Basically, only summer afternoons. We had PG&E come out repeatedly and they could not find the source. We spoke with plumbers and other heater repair companies. All of them told us that it was not our heater; that we were wrong about the inconsistency of the smell. That gas leaks are only consistent and would not happen only when it was hot. We were told that we must be wrong. We felt like we were going crazy. Until we called Bay Area Water Heaters and Dave came out (with a whole crew). He took the time to inspect our heater and said yes, this slight gas smell on hot days is something he had heard of. It was likely due to an old valve within the control panel. He walked us through our options but ultimately suggested replacing the entire heater. His team was able to do the job right then and there and at a reasonable rate. It was completed within the hour. And sure enough, no more gas smell in our garage. Dave and his team were amazing and incredibly professional. We will be using this company again.

    The owner, Chris, showed a complete inability to control his emotions and yelled at me over the…read morephone during a routine customer service call. I had scheduled a service appointment and needed to cancel. I understand that cancellations impact a schedule, so I remained completely calm and polite throughout the conversation and paid their full cancellation fee immediately without hesitation or dispute. Despite complying with their policy right away, the owner became hostile. He lost his temper, raised his voice, and berated me for how much the cancellation hurt his business. A cancellation fee is meant to cover lost time--it is not a license to yell at and lecture paying customers who are speaking respectfully. Handling ordinary business interactions with this level of aggression and emotional volatility is completely unacceptable. I would strongly advise against dealing with an owner who treats customers this way.

    Volta - homeappliancerepair - Updated September 2026

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