Mr. Tankless
Company Overview
We provide expert installation, repair, and maintenance for all brands of tankless water heaters.
Our hands-on experience spans more than 25 years in the plumbing industry.
We began as a general plumbing repair shop back in 2000.
We're certified by six tankless manufacturers.
I discovered my passion for plumbing shortly after arriving in Texas over 35 years ago.
I earned my advanced plumbing license before pursuing the Master level.
We operate with full licensing, including Water Supply Protection.
Family comes first—I've been married 22 years and raised three kids.
Business Services
- Bathroom remodeling
- Bathtub installation
- Bathtub repair
- 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
Business Location & Hours
Mon: | 8:00 AM - 6:00 PM |
Tue: | 8:00 AM - 6:00 PM |
Wed: | 8:00 AM - 6:00 PM |
Thu: | 8:00 AM - 6:00 PM |
Fri: | 8:00 AM - 6:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

You just don't get any better than Mr. Tankless! I reached out to Bob after reading many, many good reviews of his work on our neighborhood Facebook group and holy smokes did Mr. Tankless deliver. We texted back and forth about the job and he gave me a quote right then and there. The team came out right on time and couldn't have been friendlier. Not only that but they were very courteous and just good people. If you are looking around to get your water heater replaced (tankless or tank) then look no further, my dear Yelp friend. You have been lucky enough to find Mr. Tankless. You're search is over!

I don't normally give out 5 stars to any business because, over time, they seem to lose the reason why they are in business. However, with Mr. Tankless, my mind is changed. Bob was friendly, prompt, very effective in communicating what was needed and what options I had. I asked about upgrades and he guided me to the what was right for ME. That is honesty in business and true customer centric business model. Not only will I not use another plumber, I will advocate for Mr. Tankless at every opportunity that I get. Outstanding experience.

Me tankless was great. He knows tankless water heaters is precise, very reasonable, does a Great job, was on time to our home and very nice man. We highly recommend him. We have AHS warrenty who in 3 visits could not fix our tankless heater stating it needed rescaling but it really was a bad sensor which mr Tankless fixed and He rescaled the unit. He is well worth a call if u want someone reasonably priced and knows what he is doing.
The Fulton's

Recently, my 87 year old Mom was having problems with her tankless water heater and was getting service from a major service company here in Austin. The guy had been out twice, charged $360 total over 2 visits, and the problem was still not fixed. Concerned that Mom was being ripped off, I wanted to help. After meeting this technician and asking the 3 obvious questions: What's wrong, can you fix it and when can you have the job done?, "Larry" could provide no answers. The $360 was for diagnostics and trip fees. I was frustrated to say the least. Then one day our luck changed. Mom had met Bob Lemons at the local HEB. "Mr Tankless" gave her his card and invited her to call him. We called Bob and he was out within a couple days. Not by appointment, he fit us in because he wanted to get Mom taken care of. No diagnostic fee nonsense. Two things you'll notice about Bob by looking at his Yelp ratings and by speaking with him: He is genuinely concerned with taking care of his customers and giving them quality expert service. The other thing you'll notice is that he knows his stuff like no other. This makes him extremely busy and in demand. He was extremely patient, knowing we were frustrated and got the repair done. He's a pro and can be trusted to do the work right and at a fair price. Thanks Mr Tankless!

My 20 year old water tank needed to be replaced and I wanted to get a tankless water heater that would supply hot water fast to the 2 showers and a hot tub in my home. After talking with various contractors whose quotes ranged up to $13,000, who insisted that they would have to rip a hole in my garage wall, tear up my yard etc in order to get me what I wanted, I gave up. Then my neighbor recommended Mr. Tankless. What a lifesaver. I was out of town during the entire process and he handled everything! He gave me a reasonable quote and told me it would take him three to four hours to complete it. He said he would need an electrician and would arrange for same and pay for him. He handled everything. He left my home spotless. I would recommend him to everyone. I now have Limitless hot water. Thank you mr. Tankless. Thank you Bob.

My water heater started leaking last week and I got a few bids to install a tankless system. We decided to go with Mr Tankless because of price and knowledge of tankless systems. Bob addressed all our questions and concerns at the time of the quote.
This morning Bob and team installed a new tankless water heater. The team did a great job and quick too. Hello endless hot water!
Highly recommend!

Bob did a good job converting our 2 hot water heater system to a single tankless system. He was responsive to texts and phone calls. His team got the 2 old hot water heaters removed, the 2 systems tied together and the tankless system installed in 4 hours. The Rinnai RUR160 has been working great. Setting up the recirculating pump schedule can make a big difference. The Rinnai makes setup easy.

Our tankless water heater sprung a leak and had to be turned off, so now no hot water. We picked Mr. Tankless based on the reviews and the appearance of specialization in tankless water heaters. We called and got an appointment. Bob showed early afternoon and inspected/found the issue. Tankless heater is old and he indicated that it may be difficult to find parts but he would look and call later in the afternoon. Also we asked a est for replacement. Well Bob never called later or the next day. 2 days now without hot water we had to call ARS. It's fixed now(replaced) but we wanted to let other people know and Mr. Tankless as well ,how lame it was and poor business practice to not even call back. Would have been ok with " can't find the part" or "don't have time for the job right now" but no call is unacceptable. No stars was not an option.

Mr Tankless saved the day. Came out as promised and fixed my tankless water heater. Service was on time, efficient, and done correctly. All was as promised. I would highly recommend him for tankless water heater repairs.
David R

Bob is extremely professional. Him and his crew arrived on time in the morning as he had said and finished the job in 3 hours. They even cleaned up after themselves. After finishing the job, Bob filled out all the rebate forms and even walked me and my wife through the operation guide for our new tankless system. I would highly recommend Bob for any plumbing needs.