Phoenix, AZ 85003, United States of America

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We had an amazing experience with **** and his team. Our tankless water heater failed 2 years after another company had incorrectly installed it. **** was responsive, professional and quick. We wont be using anyone else but this group from now on!

- Ashley N.

**** and his team are awesome! They are literally lifesavers. They identified the improper installation of our tankless water heater by another company and made all the necessary repairs to prevent a potentially dangerous situation. **** is an expert professional and communication with them is great. Exclusively Tankless is the best! I highly recommend this company.

- David B.

**** and his team at Tankless did a great job on getting us a new water heater at a great price. Definitely recommend

- Tom B.

They did a fantastic job. Very professional, on time and completed the job in a timely manner. Made sure I understand how to operate the tankless tank. I highly recommend!

- Jerecia P.

Awesome! Great job on the installation from ****! Additionally, Thanks to **** for the quick turnaround from the quote to the install. Everything equals a happy customer!Chelo

- Marcelino C.

I worked with Doug at exclusively tankless and was blown away with his professionalism and patience to make sure all of your questions/concerns are answered. They provide great pricing and excellent service to go with it! I highly recommend them.

- Russell B.

They did a great job and half the price of other companies. No fuss, no problems. Highly recommended.

- Dan G.

Doug was great to work with and his team was topnotch. They did a little bit of a custom install bringing the water pipes below the heater and the install looks fantastic! Will definitely be recommending Exclusively Tankless. Thanks for the confident answers, knowledgeable discussion and great install.

- Joshua S.

Doug has been out to 2 of my properties and is always on time and a great and honest guy to work with. You will not be disappointed on his workmanship and professionalism. Thanks again Doug!

- Rene R.

Doug is fantastic to work with and gave us honest information with all of our questions. It’s kind of a big deal to take out your water heater and put your faith in this system, but it has worked perfectly. When we did have an issue recently, Doug responded quickly and helped us resolve it quickly. Thank you!

- Heather M.

I’ve had my tankless water heater for a year now and it has worked like a dream. When we called Doug last year we were desperate. We are a hair salon and our water heater stopped working and we had a full day of clients. Doug made it work and replaced our old broken unit that same day!!!! I have nothing but praise for him and his company.

- Hair-Do Salon

Had to get a water heater replacement right away since ours was leaking and needed to be relocated. Doug got the job done within days, coordinating with an electrician to run a new circuit. Very happy with the responsiveness, produce, and professionalism.

- Diane D.

Just replaced my undesized 10yr old water heater with an electric Tru tankless and installed by Exclusively Tankless. So far so good. It's been a really good decision.


This setup needed an additional electrical hookup for a 100Amp line. Exclusively Tankless works with a local electrical company (Creative Electric) and they seem to work well together. The tankless water heater is awesome. We don't run out of hot water anymore. No issue with the flow rate and water temp is really good (you can dial it in on the unit). It also takes a much smaller footprint since it hangs on the wall is fairly compact.


Just a heads up. If you need an electric heater you'll likely need that 100Amp line to be added and that's an extra cost. You kinda need to help coordinate and confirm your electrical and plumbing work. We had some miscommunication regarding scheduling at the beginning, but Exclusively Tankless came through at the end and did some good work. Would recommend.

- Alex N.

Doug Schramm at Exclusively Tankless is a life saver. Our 'Eternal' Tankless water heater started leaking and popped the GFI. I learned that the company had gone out of business a year or so after we installed the unit three years ago. We are in San Diego and started hunting for someone locally to repair it. Doug at ET was the only one I talked to that was knowledgeable on the unit and could help. I sent Doug a picture of the leaking part and he knew exactly what it was and how to fix it. He sent me the new part at no charge, I only had to pay $10. for the one day UPS shipping. He walked me through the procedure on replacing the part, testing and startup. It was really easy and I fixed it myself with his direction. He probably saved me $2,000.+ for a new unit, which what most of the local guys were quoting me. If I have a problem with the unit in the future, Doug will be the first person I call. Also, I have several friends in the Phoenix area and will definitely recommend ET/Doug to them. We've got hot water again, life is good. Thanks again Doug.

- Jerecia P.

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