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    Rennai tankless water heater installed indoors
    Clint G.

    After my conventional water heater started leaking after 8 years, it was time for a new water heater. I got quotes from other companies, but ended up going with Mr. Tankless because he was easy to communicate with and provided the lowest quote. I also trust his experience doing this for so long with central Texas water. The installation saved some drilling to the outside by utilizing an existing drain pipe. I'm happy with my upgrade!

    Hiong K C.

    Mr. Tankless in Cedar Park delivered an exceptional experience with their quick response time. Their prompt service sets them apart, ensuring a reliable and efficient customer experience. I had just got my tankless water heater installed and it takes 15 mins to get hot water. The installer came by a few times and he assured me that's the norm. So I called Rob to see if we can get hot water faster. Rob and his team came by and it only few minutes to get the issue resolved. Now it only takes 6 second to get hot water. Mr. Tankless not only addressed the issue promptly their attention to detail and expertise made a noticeable difference in the efficiency of our tankless water heater. Highly recommended!

    New tankless system!!!

    Great value for a quality product and excellent installation experience. The showed up at 9am and had my old tanked unit exchanged/ new until up and running by 11am. Super happy with the work. I would recommend 100% to anyone need a new tankless unit!

    I had a 14 year old water heater go out, and after calling around a few places I landed on Mr. Tankless. Robert was a delight to talk with, a consummate professional and got me squared away with a new tankless water heater. Not only was he the best to work with, his cost was one of the more competitive to install. He was straightforward, no bs and the type of person i'd recommend to anyone. Stop searching, you've found the right person to install your water heater.

    The fully installed system in our attic. It's performing amazingly well.

    Bob and his worker came out to our house after our old tank heater started to leak from its inlet. They quickly assessed our situation and were able to offer a very competitive quote for a highly rated Rinnai tankless water heater. He gave me the quote in writing and left us to consider our options. After I reached back out to him, he gave me a date and time window when he and his worker Brandon were able to come out to our house. He texted me letting me know he was on his way and he arrived right on time. They completed the installation of the new heater in the amount of time they estimated and they showed me how the bypass system worked for annual maintenance. The system has been performing incredibly well, we're able to have as many people bathing as we want which was something our old tank heater could never accommodate. I really recommend Mr Tankless, they were professional, arrived on time, did a great job, and offered a fantastic price. I wouldn't hesitate to hire them again for any plumbing job.

    Navien tankless water heater installed in a triangular closet in my garage.

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    6 years ago

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    7 years ago

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    Robert L.

    That’s very kind of you

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    7 years ago

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    7 years ago

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    5 years ago

    EXCELLENT! Bob came out same day to fix an issue with my tankless water heater and did a GREAT job at a fair price. Highly recommend!

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    10 years ago

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    8 years ago

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    Robert L.

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    7 years ago

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    5 years ago

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    11 years ago

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    Robert L.

    Thank you so much for your kind review

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    7 years ago

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    Robert L.

    Thank you so much for the kind review. Our customers are the best !

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    10 years ago

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    Robert L.

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    8 years ago

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    8 years ago

    Good experience. All I needed was some routine maintenance - they showed up on time, delivered on promise and on price. Trouble-free.

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    6 years ago

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    5 years ago

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    Robert L.

    Thank you so very much. We work very hard for our customers

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    8 years ago

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    Robert L.

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    7 years ago

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    8 years ago

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    Page 3 of 4

    Ask the Community - Mr. Tankless

    Review Highlights - Mr. Tankless

    Bob was super responsive and was able to take a look at our tankless water heater the next day.

    Mentioned in 83 reviews

    Read more highlights

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    Brad B Plumbing Services

    Brad B Plumbing Services

    4.4
    (203 reviews)

    Excellent, no nonsense and confident service. Several things to note. His price, at $110 is…read moreexcellent. His prices for parts were a bit on the high side, so my bill was slightly higher than anticipated because we needed lots of, yes... parts. However, he came the next morning at 8:00 a.m. Is very professional, and courteous and I felt comfortable with him. He also did an excellent job and left the space clean. I'll pay extra for that. And next time, maybe I won't need parts, ha! Truly--highly recommend.

    Honestly the work is good...as it should be from a master plumber…read more The issue I have is the issue I've had with literally every plumber ever. They've got you over a barrel when they come out and start throwing parts. This was an install of a drop in kitchen sink and faucet. He told me his hourly rate was 135 bucks. I was expecting to spend about 400 maybe 500. The final bill was 850. I feel I was overcharged on both the parts and labor. He charged me starting 45 min before he got there but still included a "truck charge." The removal and replace of the sink took 2 hours. To me the "clock" starts on the labor at the agreed upon arrival time. When I'm getting charged 439(!) bucks for parts on top of the sink and faucet itself, that extra charge for labor is quite unwelcome. I mean the sink and faucet itself that were "nice" were like 500 bucks. So almost that again just in parts. ‍ His answer in general as I look at these reviews is that he buys his parts from a plumber supply not Home Depot etc. I would have to research each individual part to see if its price point is "fair". A perusal of solid brass fittings and pvc p traps on the Lowe's site shows the price I paid was about doubled. He acted quite insulted that I wouldn't know just how much better his parts were and implied they were all but unavailable at big box stores. literally doubling what I expected to pay was quite a shock to say the least. It is what it is. If I was able to do it myself, I would've. Live and learn Learn a trade kids lol

    Airco

    Airco

    4.6
    (269 reviews)

    Exceptional customer service from the team at AirCo. Following a detailed home inspection, I was…read morefaced with multiple concerns across electrical, plumbing, and HVAC systems. From my initial interaction with the office representatives (Taylor, Dave Sr., and Dave Jr.) to the technicians who came out to my home (Nick, Jackie, and John Paul), the level of professionalism and care was outstanding. The team provided an in-depth assessment and diagnostic of all identified issues. Just as importantly, they took the time to clearly explain areas that were not a concern and documented a thorough review outlining why those aspects of the home were in good condition, information that will be extremely valuable for future home inspections or potential buyers. Each team member was knowledgeable, responsive, and thorough in addressing my concerns, making what could have been a stressful situation feel manageable and well-handled. When people speak of organizations that deliver top-tier service, this is exactly the kind of company they mean. AirCo has earned my trust and will be my first call for any future needs.

    We did not purchase an entire new AC system/compressor/furnace with Jon Paul M. for the following…read morereasons: 1. He charged $675 to fill coolant and run a leakage test when he knew there was a 90% chance beforehand my evaporator coil was leaking and it would not be worth replacing the evaporator coil for $4500. He only offered a $675 credit towards a new system after I complained. 2. When I texted him a question about the new system quotes last year, he ghosted. Yet he emailed me four days later asking if I was ready to purchase a $17k system. Four days to decide on a $17k system without answering questions or receive other bids is not enough time. He cares more about making the commission than answering questions. 3. Jon Paul kept pushing the top of the line variable Daikin for $17k. Yet Shields AC & Heating in Lockhart said the DH7VSA compressor has a lot of firmware and software bugs communicating with the thermostat. Shields said it's not worth all the rebates and incentives. 4. Airco only offers a three year labor warranty through Airco. Yet they do not tell you that Daikin and Goodman offer an extended ten year labor warranty through Asure for $850. Daikin owns Goodman. 5. Jon Paul's quote did not include new return and supply plenum, unless he didn't specify. He only mentioned spraying the existing supply plenum with mold killer. 6. Jon Paul did not suggest moving the entire system 3 - 4 feet in the attic to reduce static pressure. Three other companies suggested moving the entire system. 7. When I asked Jon Paul what the difference was between the $17k variable Daikin and $15k variable Daikin, his response was, "More features and stuff." I need someone more articulate. 8. Jon Paul did not run a Manual J test. Ultimately, we ended up paying $12.1k with Jurnee Mechanical for a variable Goodman GXV6S condenser which included new return and supply plenum, moving the entire system 3 - 4 feet in the attic, 10 year extended labor warranty through Trinity, free maintenance for two years, and Reme Halo UV light.

    O & M Plumbing Services

    O & M Plumbing Services

    4.9
    (135 reviews)

    Chris showed up promptly. He quickly and efficiently addressed our problems. We were pleased with…read morethe price. Will definitely use O&M in the future! Six stars!!

    Exceptional O & Plumbing Service Experience…read more I highly recommend O & M Plumbing for any plumbing needs. In particular, Chris F. has consistently demonstrated exceptional skill and professionalism on every project of mine. His attention to detail and commitment to quality workmanship set him apart as a truly outstanding plumber. Project Background I recently purchased an older home, full of charm and distinctive bathrooms. However, I encountered a leak in the master shower that required the p-trap under the shower drain to be replaced before new tile work could be completed. My concern was that reconnecting the new p-trap to the antique cast iron drains in the foundation might cause the cast iron to crumble. Chris F.'s Approach and Solutions Chris came to the rescue, using a camera down the drain to evaluate the situation. He explained the difference between what was probable and what was possible, providing two bids: one for the probable good case and one for the possible problem case. Having used Chris before with excellent results, I trusted his methods, which are always the least intrusive and focused on effective access. In the worst-case scenario, Chris would need to cut and excavate a 2' x 2' hole in the foundation around the shower drain, then tunnel no more than five feet under the foundation from that access point to secure a solid connection to the iron drainpipe. In the best-case scenario, he would only need to excavate a 2' x 2' hole around the shower drain to replace and secure the new p-trap. He also showed me pictures of his past work for reassurance. Successful Outcome Fortunately, the best-case and probable case prevailed. While fixing the p-trap, Chris also discovered an unrelated drain leak under the foundation, which he repaired at no extra charge. I felt I received excellent value for the service provided. Professionalism and Work Quality Chris left the work site clean, as he has always done in the past. He and his co-worker collaborated well, using a small and quiet jackhammer designed specifically for plumbing foundation work. The new drain looks beautiful, and I can confidently proceed with the new tile work, knowing that the unseen part of the shower is sound and affordable. Appreciation Thanks to O & M Plumbing for introducing me to Chris F. and Mike. Both are good and considerate professionals, and I am grateful to have them working in my home.

    Mr. Tankless - plumbing - Updated June 2026

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