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Mr. Tankless

4.7 (141 reviews)
Open 8:00 am - 6:00 pm

Services - Mr. Tankless

Bathroom remodeling

Bathtub installation

Bathtub repair

13 More Services

Drain installation

Faucet installation

Hot water recirculation pump installation

Hot water recirculation pump repair

Plumbing inspection

Plumbing installation or replacement

Plumbing repair

Remodeling

Shower installation

Shower repair

Water heater installation

Water heater repair

Water pipe repair

Mr. Tankless Photos

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Recommended Reviews - Mr. Tankless

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Reviews With Photos

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!

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!

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!

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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2 years ago

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Robert L.

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6 years ago

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Robert L.

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2 years ago

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3 years ago

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4 years ago

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Robert L.

Thank you for the kind words. It was a pleasure meeting you

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7 years ago

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2 years ago

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3 years ago

Needed to swap an old tankless with a new and these guys got the job done fast. Quick, clear, and professional.

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3 years ago

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8 years ago

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7 years ago

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4 years ago

A great company that is responsive and provides quality work! We will call on them again if we need anything with our tankless water heater.

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7 years ago

Mr. Tankless kept his promises, was easy to deal with, and we are happy with his work.

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Robert L.

Thanks Erik, it’s just what we do

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7 years ago

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7 years ago

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6 years ago

Replaced two water heaters with a single Tankless. Couldn't be more happier! Would recommend!!

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9 years ago

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4 years ago

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Page 2 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 84 reviews

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Brad B Plumbing Services

Brad B Plumbing Services

(204 reviews)

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

Brad was professional, courteous, and on time. He was able to unclog our drains, and he left the…read moreentire area very clean. He also gave us advice as to how we can manage/monitor our drain issues that were related to our air conditioning condensation that was the cause of our problem. Brad was very thorough and presented himself as a knowledgeable and capable plumber.

O & M Plumbing Services - Broken drain line in slab

O & M Plumbing Services

(134 reviews)

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.

We had a great experience with O&M Plumbing. Our home is pier and beam with original cast iron…read morepipes, and they found a crack in a P-trap during the inspection. They clearly explained the issue and gave us two options: a quote to replace just the P-trap and a separate quote to replace all the pipes since the cast iron was corroding. What stood out was that there was absolutely no pressure to upsell. They took the time to answer questions and let us decide what made sense for our situation (we chose to replace all the pipes). They were responsive, courteous, and showed up on time. The work was done efficiently and professionally. A big shout-out to Andrew, Landen, and Ben--they were fantastic to work with and made the whole process smooth and stress-free. We'll definitely be using O&M Plumbing again and would highly recommend them.

Mr. Tankless - plumbing - Updated May 2026

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