1. First Class Water Heaters

    1. First Class Water Heaters

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    Pittsburg, CA

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    First Class Water Heaters

    4.3 (245 reviews)

    Services - First Class Water Heaters

    Plumbing inspection

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    Pipes has a slow leak.
    Yaya H.

    First Class Water came out in October 2024 because my dining room ceiling was showing signs of a water leak. the technician came out and determined that it was my bathtub faucet which was loose that was causing the problem. I asked the technician to cut and check the ceiling and he said he preferred not to. I trusted that he knew what he was talking about. However, he did not. When another company went to cut the damage ceiling they noticed the wall was still wet and was able to see the pipe was leaking. In fact, the bathroom plumbing wasn't even in this section. Had the First Class Water technician did a thorough job, he would have been able to properly diagnose the issue and it wouldn't have cost me additional money to fix what they should have.

    Tankless water heater
    Christopher C.

    FCWH provided great service via Eli Santos. Eli was courteous, knowledgeable, and overall solid service agent. He helped diagnosis the issues with our tankless water heater and educated us in the process. By the end of his visit I was sold on First Class Water Heaters and especially, Eli. I'd definitely recommend this company for your water heater needs.

    Busted water heater for 13 days
    Katie J.

    Poor customer service We were assigned this vendor through our home warranty. It took a long time to have them out for the water heater--they were assigned on 1/12 and finally came out on 1/18. We were told we needed a new water heater. Since we needed a new tank, wanted to look into upgraded options such as a larger tank or a tankless system. I called First Class and was told the rep would call me back with pricing options. No one called. I called First Class 2x and even left a message, and when I finally connected with the staff, again they said the rep would call me. Eventually he did but he was not sure if our Home Warranty would allow us to upgrade. He said First Class would call me later that day and tell me what the options were and that if we went with a bigger tank, he could install it on Monday. No one called. I called again during business hours but only got a voicemail and again no one called me back. It's now Monday and I called first thing. When I explained the urgency and frustration that I had yet to receive a call back among the many times I was told I would receive a call or in response to my voicemails, the staff defended the situation stating the rep had eventually called, denying that they'd ever not called me back. For frame of reference, we have young children and we we don't have hot water, can't shower, run our dishwasher, or washer/dryer. We've been bouncing around to friends houses to do these things for over a week now. In total, it will be 13 days without hot water. There's been no urgency from First Class, no customer service, and this is why I do not recommend this vendor

    Rinnai tankless water heater with Pelican water softener and UV light.
    Tj N.

    Jamie came out and did an outstanding job on a tankless water heater install and re-plumming of the home water softener with UV light. He came back the following day just to get it setup to my exacy specs...

    This is the job he completed.

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    4 years ago

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    Carl F.

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    3 years ago

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    6 years ago

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    7 years ago

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    Carl F.

    Thank You so much for your feedback!

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    4 years ago

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    Carl F.

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    6 years ago

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    5 years ago

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    6 years ago

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    Carl F.

    Thank you for your feedback we appreciate it!

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    4 years ago

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    4 years ago

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    6 years ago

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    Carl F.

    Appreciate you taking the time to give us some feedback. Thank you!

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    8 years ago

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    6 years ago

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    9 years ago

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    5 years ago

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    6 years ago

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    Carl F.

    Thank you for the feedback! Much appreciated!

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    5 years ago

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    4 years ago

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    4 years ago

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    6 years ago

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    5 years ago

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    5 years ago

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    Carl F.

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    6 years ago

    Pedro and Charles did a great job . replacing my water heater . Clean , fast and great service

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    6 years ago

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    6 years ago

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    Carl F.

    Thank you for the feedback! Much appreciated!

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    7 years ago

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    6 years ago

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    Carl F.

    Thank you for your feedback we greatly appreciate it!

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    6 years ago

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    6 years ago

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    7 years ago

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    6 years ago

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    9 years ago

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    5 years ago

    Zenus Walters quickly responded to our water heater replacement. A difficult job on a water heater in a crowded space. Five stars for sure.

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    6 years ago

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    6 years ago

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    Page 3 of 7

    Ask the Community - First Class Water Heaters

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    Incredible plumber. We just moved into a fixer-upper and there were multiple leaks we had to take…read morecare of. We evaluated around 6-7 companies, and off the recommendation of a neighbor we had Letts come out. I was a bit hesitant because you are charged for a minimum of an hour, there is no free estimate. However, in that time he shored up a leak with a temporary patch and had an estimate of how much work it would be to take care of everything, which ended up being much more reasonable than some other places we evaluated. Adam came back when he had enough open schedule to fix everything and some parts were shipped in. An incredibly nice guy, and just an incredibly fair and integrity oriented operation. All the vendors I evaluated were five stars with many reviews, but Letts was the only one that didn't feel like I was being upsold and he was just out there to help me solve my problems. Honestly can't wait to hire them again, which is an absurd thing to say about a plumber, but man what a great experience. I will rave about them to anyone who will listen.

    We continue to rely on Letts Plumbing for our various needs. They installed a water cutoff valve…read morefor a refrigerator water line (whoever did the initial install didnt put one in!). They most recently removed an old water softener and installed new copper piping where the softener connections were. Oddly, the tech charged us for new copper while keeping the copper sections he removed, saying he was adding it to their collection. I get not being able to reuse the sections connected to the old valves but there was some that could have been reused, or left for our recycling. Not a huge deal, just seemed odd that he mentioned keeping it for their future use. We'll still use Letts and recommend them to friends. They're very prompt. The work is done well. And the job sites are left clean.

    Water Heaters Masters

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    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.

    Cal-Delta Plumbing - rebuilt service riser

    Cal-Delta Plumbing

    (23 reviews)

    Jon came out to install my Moen and he was really helpful…read more He did an amazing job. I'm very pleased with his work ethic because he has years of experience and is a perfectionist at his work. It was cool watching him work because I had no idea the process was like. It was interesting how the pipes were cut, then melted and weld together. Even though it was kinda expensive for everything (moen + install/adjustments) BUT-- I'm glad I have a new hose bib because my previous one was leaking. Now I can water my palm trees! Yay. He seemed like a really cool, chill dude. Jon even helped zip tie my sprinkler wires that were all over the place. Now it doesn't look hella funky. Thank you!

    ELAINE: Since when is a drain a toilet?! GEORGE: It's all…read morepipes! What's the difference?! ELAINE: Different pipes go to different places! You're gonna mix 'em up! GEORGE: I'll call a plumber right now! -Seinfeld da Scene: To lower our home insurance premium we needed to install a whole home leak detection system. Farmers had a program setup w/Moen, so we went that route. Ya purchase from Moen directly, they sub-contract to FrontDoor Pro, who hooks you up with a local plumbing contractor: Enter Jon & Cal-Delta Plumbing. da Work: Scheduling was a snap, Jon arrived on-time and gave me an overview of the install process. I wanted to upgrade a few things as a change order, he provided a quote and went to work. Couple hours later, the doorbell rang a Jon was done, ready to flush/run the water and test the system. Clean install, in a tight spot, Jon was careful to ensure it looked as good as it worked. da Service: Good outfit, top to bottom from scheduling, to communications, to on-site interaction, flexibility, and attention to detail. Jon explained everything with confidence. Never really had a "go to" plumbing tech, but now I do... won't need to Yelp! next job, if it's about pipes, Jon & Cal-Delta get the call, excellent customer service, quality work, great value.

    First Class Water Heaters - plumbing - Updated September 2026

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