Mr. Tankless

John D.

I have been working with Mr. Tankless for close to 15 years. Our first water heater was leaking every couple of years and we would call the same installing plumber. Mr. Tankless came out and discovered that the electrical connection to the water heater was improperly done causing it to burn out.

We quoted several plumbers for a tankless unit and Mr. Tankless, Bob, was reasonable and his work is excellent. We have been very happy with his service calls and general knowledge about our system. So many plumbers today are complete swap out contractors, not knowing how to fix anything. Tankless systems are great but they are complicated systems to install. Mr. Tankless is a reliable and fair contractor we are so happy to have found in the Austin area. John Dz

Adam G.

Gabriel was very responsive. He followed up even after I had told him we had changed our minds. Now I wish I had gone with them in the first place!

Teresa C.

Robert with Mr. Tankless came out and quickly repaired an installation mistake by a previous plumber. Now our tankless water heater works perfectly!

Kris M.

Bob stopped by and got my hot water tank up and running again, and walked me through what a tankless install would look like. Very helpful, friendly and informative! I'll be keeping my business with Mr Tankless in the future!

Palma B.

Remember back in the good old days when service was outstanding, courteous, professional, and reliable? Well, that is what you get with Mr. Tankless. I highly recommend Bob, Mr. Tankless! Bob was able to address a problem with my tankless systems in just a few minutes where others where stumped. If you need someone to address your tankless system, call Mr. Tankless.

M F.

Mr. Tankless is fantastic! We had an issue with our tankless water heater, (no hot water), from the roofers removing and reinstalling the outside vent during a roof replacement. We called Mr. Tankless and Bob came out the next day. He quickly identified the issue, got a new vent, and coordinated with the roofing company to get everything working properly. Bob is courteous, professional, and efficient. Our tankless water heater is pretty old...when it needs replacing we will be calling Mr. Tankless to install a new one!

Steve L.

Mr. Tankless refuses to refund all or any part of the $525 we paid for a new Navien control board and install labor. I called MT because the unit displayed a 003 error code several times. I was able to override the error and reset the unit - but, at the third instance, I figured it was time to call for help. So I called MT based on good reviews posted online. Here's what happened next.

During my first phone conversation with MT, MT stated that the control board needed to be replaced because this is their experience with the 003 and other error codes. MT dispatched a two-man team with a replacement control board. They installed this replacement board but could not get it to work correctly. Water temperatures fluctuated between cold and scalding when tested. And the unit did not respond to control settings at the front input panel. Also while testing, the mixing valve began knocking intermittently. At this point, the MT techs on site called Bob at MT, and Bob suggested that I needed to replace the entire unit - approximately $1600 for the unit plus $1600 for install labor.

Shortly after, I spoke with the Navien rep responsible for this geography. He put me in contact with a second plumber. Working with that second plumber and that Navien rep, I have since learned that Navien procedures call for plumbers to first inspect the unit, on site, opening it up, working through programming and error codes and components while talking with support techs to discover and identify the problem. MT failed to follow this Navien guidance. In addition, the MT techs working on site at my house called Bob for guidance; they did not call Navien, thereby failing to create a record of the repair at Navien.

With the Navien techs on the phone, that second plumber determined that MT failed to correctly set at least one dip switch on the new board. With that switch set in the wrong position, the replacement control board could not operate correctly. Also, because they were on the phone, that call by the second plumber created a repair record at Navien. Also, working error code by error code, that second plumber and the Navien techs discovered and determined that the tankless unit would not operate correctly because a wiring harness had burned out and was visibly charred -- something you can only discover by first opening up the unit, working on site, going through the error codes, inspecting components.

Knowing what I now know, working with the second plumber, I contend that MT did not follow Navien repair procedures that call for on-site inspection and diagnostics before any repair begins - procedures that also call for plumbers to work with Navien techs over the phone as they inspect and diagnose problems. Knowing what I now know, I contend that the original control board did not need to be replaced - because the wiring harness was the problem; the control board could not send and receive instructions over the bad wiring harness.

I have suggested to Bob at MT a compromise settlement - refund the cost of the control board, $325, while he uses the remaining balance of $200 to pay for the install labor of the MT team. Bob refuses.

That's my experience with Mr. Tankless.

Nine F.

I'm a couple of months late on writing this review, but Bob Lemons (Mr. Tankless), Brandon and Matt (I hope I got everyone's name right) were fantastic and I didn't want to pass up this opportunity to sing their praises. They replaced an old tankless heater in a rental house that I own in Elgin. They did a great job with diagnostics and installment of the new replacement unit. They were punctual, professional, informative and fast. I asked a bunch of curiosity-based questions (there's an engineer in me somewhere) and it's a big plus to me when the techs not only answer but take an interest in explaining how things work. Brandon was really great at this during the diagnostic visit.
The Mr. Tankless team was professionally and technically great. But here's the real thing that made them stand out for me - they were incredibly helpful and respectful of a very delicate situation regarding my tenant. Once they were explained the contours of the problem, these guys handled the difficult situation with a lot of finesse while still doing a super job. So big thanks, you guys! I'll definitely be calling you again!

Laura B.

Mr. Tankless was super responsive, reliable, and provided an estimate significantly less than a big named competitor. He answered any question I had right away. He installed a floodstop to our tankless water heater, which provides reassurance for future freezing weather. His installers were friendly, professional, and efficient. Would highly recommend!

Jill D.

Robert and crew were great! Our 16 year old old water heater needed to be replaced and I wanted more information about going tankless. I had concerns given that so many tankless went out during the epic freeze. They answers all my questions (I had a lot) and addressed concerns. The install took about 3 hours and they were very professional and took covid precautions. We were able to move it outdoors to free up the water heater closet. I did a ton of research on plumbers and all the recommendations were spot on for Mr. Tankless. Highly recommend.