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    Just Tankless

    4.6 (97 reviews)
    Closed 8:00 am - 7:00 pm
    Updated 2 months ago

    Services - Just Tankless

    Gas line installation

    Gas line repair

    Plumbing installation or replacement

    3 More Services

    Plumbing repair

    Water heater installation

    Water heater repair

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    Navien PCB failure - Al replaced it the next day

    Al replaced our old tank heater with a Navien tankless just over a year ago. He's friendly and a very knowledgeable guy - it was pretty clear he had done this for a while, and was not someone who just could handle the easiest install jobs. AFAIK, this company is largely a one-man operation, Al will answer the phone/emails, come in his truck, and do the work himself. He spent a few hours and completed the job within a day. We had a couple issues with the heater since install. 1. The heater abruptly malfunctioned, and displayed an error while not outputting any warm water. Al responded at the end of the day and came out the next day to replace the PCB. He mentioned this was a known issue, but Navien was not proactively replacing PCBs on past installs. 2. The heater would very slowly drip water in certain conditions. Al came out and said it should be normal and resealed the connections, but I keep a drip tray under the heater now. Overall, a good company / individual to work with for tankless heating, it seems my issues were more likely due to Navien than the install, and Al was very responsive in helping evaluate them when they did come up.

    I've never really dealt with such a proficient and expert company. When my old tankless water heater began leaking, I called Al at Tankless.com. This was on a Saturday. He was there in less that an hour. I was stunned. These guys are subject matter experts on all things tankless (as the name implies) But more than that they do what they are timely, honest and efficient. Within a 15 minutes, Al knew EXACTLY what the problem was and how to fix it. As soon as he left (within 30 minutes) he emailed me a quote, told me precisely how long it would take to fix and volunteered to come the next day (SUNDAY). I'm' still a bit taken back. He came, he fixed, he rocks. He even installed a water filtration system to soften the water. Amazing. \ Never been happier with a vendor. If you need/want a tankless water heater system, don't use anyone else, you'd be wasting your time and money. I know, I've been there, done that

    Al Johnson is a pro. New homeowners and no experience with the 10+ year old tankless water heater that started leaking. Al responded to our call right away and recommended a new water heater which he had in stock and ready to install. After doing our homework on the Navian model he recommended, we proceeded with the new water heater and Al installed it during a storm. He was knowledgeable, efficient, tidy and pleasant to work with. He also disposed of a useless old water softener that was taking up a lot of space in the garage. Highly recommend Al!

    New Gas Tankless with recirculating (WiFi)

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    4 months ago

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    Al J.

    Thanks Larry for your kind words, it was a pleasure serving you!

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    1 year ago

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    9 months ago

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    Al J.

    Thank you Greg, it was my pleasure, appreciate your review here.

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    1 year ago

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    2 years ago

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    Al J.

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    2 years ago

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    Al J.

    Thank you for your review, it was a pleasure serving you.

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    2 years ago

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    Al J.

    Bruce, it was a pleasure to meet you and to serve you. Thank you

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    3 years ago

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    1 year ago

    Great to schedule and level of technical knowledge of job is amazing. I highly recommend.

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    3 years ago

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    Al J.

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    3 years ago

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    Al J.

    Thanks Stephen, it was a pleasure serving you.

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    2 years ago

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    Al J.

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    2 years ago

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    4 years ago

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    Al J.

    Thank David for your review, it was a pleasure serving you.

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    5 years ago

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    4 years ago

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    Al J.

    Thank you for your review, glad I could help.

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    3 years ago

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    3 years ago

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    Al J.

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    7 years ago

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    Al J.

    Thank you Norm, it was a pleasure.

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    4 years ago

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    Al J.

    Thank you Stephen, it was a pleasure serving you!

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    7 years ago

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    Al J.

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    6 years ago

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    Al J.

    Thanks Miles, it was a pleasure serving you.

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    5 years ago

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    4 years ago

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    Al J.

    It was my pleasure, thank you!

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    5 years ago

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    4 years ago

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    Al J.

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    4 years ago

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    Al J.

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    7 years ago

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    Al J.

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    6 years ago

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    Al J.

    Thanks Doug, it was a pleasure meeting you and glad we could help.

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    5 years ago

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    Al J.

    Thank you Vytautas for your review and business.

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    4 years ago

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    Al J.

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    5 years ago

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    6 years ago

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    Al J.

    Thank you Christian, it was a pleasure serving you.

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    8 years ago

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    4 years ago

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    Al J.

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    4 years ago

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    Al J.

    Thanks John, it was a pleasure meeting and serving you!

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    9 years ago

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    Al J.

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    7 years ago

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    Page 1 of 3

    Ask the Community - Just Tankless

    Review Highlights - Just Tankless

    My 84 year old father had a defective Rinnai unit that was giving him endless headaches, and Al was a total lifesaver.

    Mentioned in 77 reviews

    Read more highlights

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    Water Heaters Masters

    Water Heaters Masters

    4.9
    (842 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.

    SAV Water Heaters and Plumbing

    SAV Water Heaters and Plumbing

    5.0
    (38 reviews)

    About a week ago, we noticed that our hot water was running out much faster than usual, and the…read morewater was no longer staying as hot as it should. A few days later, we started hearing loud banging noises coming from our gas water heater in the garage. It was a 10-year-old Bradford White unit. I found Alex in Yelp and sent him a message late in the evening. To my surprise, he responded immediately. Throughout the entire process, communication was fast, efficient, and highly professional. We scheduled an appointment for the next day. Alex came out, inspected the water heater, and explained the situation clearly. We learned that there was really no practical repair option--the choice was either to replace the unit or continue using it with steadily declining performance. Since water heaters typically have a lifespan of about 10-12 years, and knowing that starting in 2027 new gas water heaters will no longer be permitted for installation in Santa Clara, we decided it was the right time to replace it. Alex provided a detailed, well-organized, and very competitive estimate that included everything, including insurance coverage. The very next day, he returned and replaced the water heater smoothly and efficiently. The entire experience was seamless from start to finish. The work was excellent, communication was outstanding, and Alex is not only highly skilled and professional but also genuinely pleasant to work with. He took the time to explain every step of the process and answered all of my questions. I always appreciate working with professionals like Alex, and I will absolutely continue to use his services in the future. Thank you, Alex, for your professionalism, expertise, and the smooth, stress-free experience. Highly recommended!

    Outstanding service! He replaced our water heater, and the entire experience was great. He was…read moreprofessional, honest, and clearly knew what he was doing. The best part is that even after the job was finished, he's always been available whenever I've had a question. Every time I text him, he responds promptly and is genuinely helpful. That level of customer service is rare these days. I truly appreciate his integrity and professionalism, and I wouldn't hesitate to recommend him to my family and friends. Five stars!

    Payless Water Heaters

    Payless Water Heaters

    4.5
    (885 reviews)

    Dear Payless Water Heater and Plumbing Team,…read more I am writing to share my appreciation for the excellent service I received from your company yesterday. We were preparing to leave for vacation when our water heater burner failed for the second time in five years. After previously having a very unpleasant experience dealing with warranty work through a big-box retailer, I decided to call Payless. I am so glad I did. The entire experience was pleasant from the initial phone call all the way to the completion of the job. Because I have roommates and needed the issue resolved immediately for peace of mind, we decided to purchase a new unit through you. Our service technician, Eduardo, was fantastic. He was incredibly patient and knowledgeable, and we were very happy to have him handling our installation. I will happily refer Payless Water Heater and Plumbing to anyone in need of your services. Thank you again for the quick and professional help.

    Eduardo did an amazing job replacing my old water heater. He evaluated the current setup and…read moresuggested improvements to follow the current code. He communicated all details clear and easy to understand. That helped us with evaluating and planning the replacements. Eduardo installed the heater the same day. The new water heater installation looks great. The only issue is a very long wait for the city permit to be submitted: 6 to 8 weeks. This was unexpected. I hope it will go well. I will update the review once it is done.

    Water Heaters Only

    Water Heaters Only

    4.6
    (11 reviews)

    We hired water heaters only to replace a tankless water heater. Not only was Loni willing to come…read moreout and discuss the various options, but also recommended we save money by reusing some of what we had. When we decided not to, Loni made sure we understood exactly what we were choosing and that it would be a good choice for us. We eventually had some other work done, and this other plumber came and pointed out all of these "issues" with the water heater. Completely scared us with visions of fire risk and heaters not working in the dead of winter, told us that this wasn't to code (even though the permit was signed off). Loni came out again. Explained everything in great detail, as to how it worked, why the other plumber was wrong. Didn't get mad that we wasted his time, just wanted to make sure that we were happy with our water heater. All in all, a fantastic experience.

    Hired Water Heaters Only to replace a residential water heater in Hayward. They came out the same…read moreday and completed the install within a few hours of the call. However, often the truest test of a quality business is how they perform when things do not go well. In my case, I had to go four days without hot water because the unit I received was defective. The day after the install we found the tank had shut down, no hot water. After a reset and restart done over the phone with the installer assisting, the unit unfortunately failed again a short time later. The next day which was a Saturday, another technician came out to swap out the heat sensor which appeared to be the problem. While changing out the part, the tech noticed that insulation near the assembly had burned, and ash was present. He removed the bad insulation, vacuumed it out and restarted the unit. It made a horrible noise, and he spent a half an hour on the phone with the manufacturer tech support trying to diagnose the problem. The noise eventually went away and he finished the repair. Unfortunately the machine shut down again, after we got one lukewarm shower. I called on Sunday, and explained that I was no longer comfortable with the unit being in our house and I wanted a replacement, of a different maker. Without hesitation they agreed, and Monday morning, after acquiring a new model of a different make from their supplier, we got the replacement installed, at no additional cost. These problems are rare, and not the fault of the installer. However, I could not have asked for a more timely and considerate treatment as a valued customer of this business.

    Just Tankless - plumbing - Updated July 2026

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