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    Efficient Water Heaters

    4.4 (781 reviews)
    Closed 6:00 am - 10:00 pm
    Updated 2 months ago

    Get pricing & availability

    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

    Water heater installation
    Chowie L.

    My 13-year old Bradford gas tank water heater started rumbling very loudly like an earthquake and had sprung a small leak at the base, dripping into the drip pan but not overflowing luckily (turning down to Low helped alot). Called Joseph and he was able to come out Sun early morning. He and his partner replaced the water heater quickly and professionally. We have hot water again! Thanks to Joseph and his crew!

    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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    4 years ago

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    6 years ago

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    2 years ago

    Joseph is a man,He is very experienced and quickly gave me an offer, which I can accept! Respond quickly and show up on time!

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    2 years ago

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    6 years ago

    Business owner information

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    Joseph C.

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    3 years ago

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    4 years ago

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    2 years ago

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    Joseph C.

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    4 years ago

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    6 years ago

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    2 years ago

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    6 years ago

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    Joseph C.

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    2 years ago

    Joseph was quick to respond to our service request and got the water heater running in no time. Highly recommenced!

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    2 years ago

    Joseph did a great job by replacing the water heater right away, many thanks! We will recommend to families.

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    2 years ago

    This company is very Efficient and fast on their work. omar was our technician was very helpful

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    4 years ago

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    Joseph C.

    We never did any work for this customer

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    3 years ago

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    9 years ago

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    4 years ago

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    5 years ago

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    4 years ago

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    7 years ago

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    3 years ago

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    5 years ago

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    3 years ago

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    4 years ago

    Joseph is very nice guy,he provides very professional service. I will highly recommend !

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    3 years ago

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    3 years ago

    Business owner information

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    Joseph C.

    We appreciate your five star feedback Alan!

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    6 years ago

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    4 years ago

    Very efficient, very cost-effective. The guy came in the next morning on Saturday and finished a clean job in about an hour

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    4 years ago

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    Joseph C.

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    7 years ago

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    Joseph C.

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    3 years ago

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    3 years ago

    Joseph came right away to replace our water heater. He's professional, efficiently and easy talking.

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    3 years ago

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    5 years ago

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    Joseph C.

    We value your feedback thank you very much Federick and happy holidays

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    Page 7 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
    (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.

    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 July 2026

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