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    Efficient Water Heaters

    4.4 (779 reviews)
    Open 6:00 am - 10:00 pm
    Updated 2 months ago

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    Response time

    10 minutes

    Response rate

    100%

    Services - Efficient Water Heaters

    Water heater installation

    Water heater repair

    Efficient Water Heaters Photos

    Recommended Reviews - Efficient Water Heaters

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    Reviews With Photos

    Old tank. Date was 2002.
    Robert Y.

    Great work. Props to Omar who worked on thanksgiving. They were rated good on yelp and their quote was in the middle of the three i received so I went with them. Upon arrival, he laid down tarps on my floors to protect against damage and dirt. He then did a removal of the old 50 gal tank, cleaned all the debris under and adjacent to the tank. After, he did a super clean install of the new one. All the flex pipes were routed nicely. Additionally if you look at the old tank, the gas line was installed doing a 180 to attach it to the tank. The new tank was done right. I am glad I went with Efficient Water Heaters and will definitely use them again if i am in need.

    Yelp Messages from Joseph, the owner

    A month ago I put out a call via Yelp to get my tankless water heater flushed. I got a number of instant replies and chose Efficient Water Heaters since they said they were experts in Navien brand tankess which sold me on using them and their quote was similar to others. I was doing some DIY research and saw that pumping vinegar through the system is how the system is typcially cleaned out. I was really concerned and screened for only natural products to be used. Joseph's reply via Yelp's message is below. I clearly asked and he tersely replied that he only used "natural" product and it was citrus based. Ok, great. I booked an appt. Well, once his tech got to our house and we asked to see this unknown "citrus" product that Joseph was annoyed that we asked twice about, it turns out it was Lime-Out -- A CHEMICAL and CAUSTIC agent! The Navien folks, when asked, even tell techs to NOT USE this product, it will damage the internal parts of your water heater!! We called Joseph to confront him on why he was having his tech use this and he HUNG UP ON US! He was also changing his pricing on us as well and luckily we had printouts of our text messaging with pricing from Yelp. The Lime-Out would have "worked" in that we wouldn't have known for months that the Lime was eating away at our water heater's innards plus we'd have trace amounts in our hot water lines in our home. The owner will say "Everything is false." No true. We short paid him by $81 for the work but we were trying to talk to him and he hung up on us so we couldn't. So unprofessional. I'm sending him a check for the rest, this wasn't about the money. I do want to say that he and his team do know about water heaters. This complaint is about him using the wrong product for flushing, one that would have damaged our water heater over time.

    Great service from Omar! A little bit later than our appointed time but they did call after and came at new specified time. Was not far from original time. From there everything went well. Installed in timely manner and communicated what needs to be done and the time for finish. As time progresses hoping to see the continued great service from them!

    40Gal installed a few months ago. Thankfully Marcos made it fit! Pic taken today, it is dusty now but it was clean when installed!
    Melanie S.

    Once again, excellent service! Jospeph answered my emergency call yesterday and today Omar came out to replace my water heater with a new tankless water heater. Excellent customer sevice, clean professional installation. I am extremely happy and feel this is an amazing company that I trust.

    Rheem standard water heater
    Marian Y.

    My water heater was old and leaking and need to be replaced asap. Joseph gave me the best quote out of the few I called. I relied on the Yelp reviews to give me a good sense of the better ones. Joseph was able to respond quickly to my questions. The appointment was made early the next morning. Joseph and his co-pilot were on time, finished the job in less than 2 hours, including cleaning up. I was also shown how to operate my new water heater. I would highly recommend this company to use for your urgent needs.

    New Water Heater

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    22 days ago

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    3 months ago

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    5 months ago

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    7 months ago

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    Joseph C.

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    17 days ago

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    2 months ago

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    Joseph C.

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    1 month ago

    Joseph installed the 50 gallon Bradford White water heater today. Very responsive and reasonably price.

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    Joseph C.

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    13 days ago

    They were prompt, quick, and efficient at getting the water heater installed and disposed of the original heater

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    1 month ago

    Outstanding service with Raul. Punctual and explained the process clearly. I have already recommended them to my neighbors and friends.

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    4 months ago

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    5 months ago

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    13 days ago

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    2 months ago

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    Joseph C.

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    2 months ago

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    1 month ago

    Omar did a great job installing my Bradford White URG250T6N. Very responsive vendor and provides all necessary items for a good install.

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    7 months ago

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    1 year ago

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    3 months ago

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    Joseph C.

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    8 months ago

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    1 month ago

    Raul installed a water heater and I'm very happy with his work. I recommend him all my friends.

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    4 months ago

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    7 months ago

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    2 months ago

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    7 months ago

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    Joseph C.

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    4 months ago

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    4 months ago

    Arrived quickly, found and fixed issue, fair pricing. Would happily work with this company again.

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    5 months ago

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    5 months ago

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    Joseph C.

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    2 months ago

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    8 months ago

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    5 months ago

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    5 months ago

    Great service. Responded very quickly scheduled the next day. Great follow up. Fair pricing I highly recommend efficient water heaters.

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    4 months ago

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    5 months ago

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    5 months ago

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    3 months ago

    Installed a Bradford White water heater. Quick and efficient install. Quick reply from yelp project

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    6 months ago

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    Joseph C.

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    3 months ago

    I called Efficient Water Heaters for my Rennai water heater maintenance. Joseph came on time and did the service. Great work! thanks!

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    5 months ago

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    5 months ago

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    Page 1 of 20

    Ask the Community - Efficient Water Heaters

    Is a permit required to replace an electric water heater in Sunnyvale that is same size as previous one? I read that only gas water heaters or major modifications requires permit in CA?

    Yes but optional. We never pressure anybody into pulling permits. We just offer them for an additional price. The reason why we don’t pull permits. Some of the times is because the owners themselves do not want the inspector at their home.

    How much would a natural gas tankless water heater installation cost?? I already have the water heater and an old 2011 gas water heater is currently installed.

    1500$. Cash only. Depends on what your looking for. Permits are more as well only if you want one

    How much to flush a gas water heater?

    150$. If you’d like to get on the schedule today and it’s easy accessible in the garage send over your full name, property address and your best telephone number. We will email you back and get somebody out there this afternoon thank you, Joseph… Read more

    What do they charge for a standard gas water installation? I hv the water heater already

    800$

    Don’t See Your Question? Ask Away!

    Review Highlights - Efficient Water Heaters

    Happy that Joseph responded to my message early Sunday morning so I can get my hot water back in few hours.

    Mentioned in 437 reviews

    Read more highlights

    Water Heaters Masters

    Water Heaters Masters

    4.9
    (840 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!

    After a frustrating experience with another company, I'm incredibly grateful I found this team…read more My water heater started leaking from the second floor into the first, and I needed help fast. From the moment I called, they were responsive, professional, and honest. They were able to come out within an hour, which was a huge relief given the situation. The technician quickly assessed the problem and gave me a straightforward, fair quote $2,300 to replace the water heater, which was significantly lower than what another company had tried to charge me. No pressure, no upselling, just clear communication and solid work. They completed the entire installation in about two hours, and everything has been working perfectly since. You can tell they know what they're doing and respect your time. What really stood out to me was their honesty. I asked what they would have charged to replace my laundry room valves (something I had just paid way too much for elsewhere), and they told me around $350. That level of transparency says a lot about their integrity. If you're looking for a company that is reliable, reasonably priced, and professional, I highly recommend them. I'll definitely be using them again for any future plumbing needs.

    IRBIS Air Plumbing Electrical

    IRBIS Air Plumbing Electrical

    4.8
    (909 reviews)

    My Irbis technician, Eduardo, performed a checkup of my HVAC and installed a smart thermostat. I…read morecannot be more pleased with the quality of his work. Also he worked fast and answered all my questions. He had a large depth of knowledge about the systems he worked on. He was pleasant and was patient with my many questions. Thank you, Irbis, for sending Eduardo out to do my jobs. I look forward to dealing with Irbis again, especially Eduardo.

    My tenant told me AC doesn't work, I went to check the thermostat, it looks fine, then AC seem to…read moreworking again. The next day, I got another call the AC failed to work again, I replaced air filter. But the next day, tenant again said the AC doesn't work. Finally, I realized it's out of my ability. I called IRBIS to check up. IRBIS sent technician Christian Lopez to my rental house, he carefully asked the symptom from me, since I don't live there, he again asked directly from tenant to get first hand information. Then he checked up thermostat, and outdoor compressor, measured the air temp from ventilation. Finally, he told me that he believed the AC is working, even though it already has 21 years of age. Because my tenant doesn't run AC during the day, so the room temp goes too high, by the time they came back around 9pm, outside temp is low, but inside is hot, in that situation, the old AC is not able to bring the temp down. So he suggested tenant to run the AC little early during the afternoon, see what happen. The AC works so far. Christian and IRBIS are very honest and professional. I definitively recommend them if you have AC problem!

    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.

    Efficient Water Heaters - waterheaterinstallrepair - Updated June 2026

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