Now Serving Phoenix, AZ 602.791.5531

About Us

Super professional and friendly. They replaced my water heater in a prompt manner. It took only about an hour for the service. I will definitely be telling everyone about their great work. Thanks for everything!

Cindy N.

Nothing But Professionals

Water heaters, if not done right, can cost a homeowner a lot of money in damages—or even cost them their home. By focusing on water heaters, we are able to ensure that they are being installed properly. We can focus on a job well done with excellent service since that is all we do. No distractions!

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LAS VEGAS: Call for a FREE estimate!

David Leahy

Co-Owner

David brings a deep knowledge of his craft and a strong commitment to honest, reliable service with over 20 years of experience in the plumbing and water heater industry.

As a founder and co-owner of Nothing But Water Heaters, he has fulfilled a long-time dream of creating a company that prioritizes quality workmanship and treats every customer like family. Frustrated by the number of companies that take advantage of customers, David and his business partner Ronald set out to build a business rooted in integrity, affordability, and community trust. That mission remains at the heart of everything the company does today. Outside of work, David is a proud father of two—one boy and one girl. He enjoys spending his free time outdoors with his kids, whether it’s swimming, hiking, biking, camping, or enjoying a day at the lake.

Ronald Munguia

Co-Owner

With over 20 years of experience in the plumbing and water heater industry, Ronald brings deep expertise and a passion for quality service to every job.

In 2018, he approached longtime friend and now business partner, David, with the idea of starting their own company—one built on the values of honesty, reliability, and top-tier craftsmanship. Driven by a desire to do things differently, Ronald helped build a company that treats customers like family, offering exceptional service at fair, transparent prices. David and Ronald’s commitment to customer relationships is at the heart of everything the company does. Outside of work, Ronald is a proud husband and father to two boys. He and his family love spending time outdoors—whether it’s hiking, biking, traveling, visiting kids’ museums, or attending pop-up events around town.

David Leahy

Co-Owner

David Leahy, Co-Owner

David brings a deep knowledge of his craft and a strong commitment to honest, reliable service wWith over 20 years of experience in the plumbing and water heater industry.​

As a founder and co-owner of Nothing But Water Heaters, he has fulfilled a long-time dream of creating a company that prioritizes quality workmanship and treats every customer like family. Frustrated by the number of companies that take advantage of customers, David and his business partner Ronald set out to build a business rooted in integrity, affordability, and community trust. That mission remains at the heart of everything the company does today. Outside of work, David is a proud father of two—one boy and one girl. He enjoys spending his free time outdoors with his kids, whether it’s swimming, hiking, biking, camping, or enjoying a day at the lake.

Ronald Munguia​

Co-Owner​

Ronald Munguia​, Co-Owner

With over 20 years of experience in the plumbing and water heater industry, Ronald brings deep expertise and a passion for quality service to every job.​

In 2018, he approached longtime friend and now business partner, David, with the idea of starting their own company—one built on the values of honesty, reliability, and top-tier craftsmanship. Driven by a desire to do things differently, Ronald helped build a company that treats customers like family, offering exceptional service at fair, transparent prices. David and Ronald’s commitment to customer relationships is at the heart of everything the company does. Outside of work, Ronald is a proud husband and father to two boys. He and his family love spending time outdoors—whether it’s hiking, biking, traveling, visiting kids' museums, or attending pop-up events around town.

Paul

Co-Owner and CFO

Paul, Co-Owner and CFO

With 28 years of experience in the business side of the plumbing industry, Paul brings a deep understanding of operations, finance, and customer service to the company. In addition to his industry expertise, he has over 20 years of experience in Human Resources and Accounting and spent six years working as a Business Management Consultant—helping other companies streamline operations and build stronger teams. As Co-Owner and CFO of Nothing But Water Heaters, Paul is committed to running a company that prioritizes integrity, fairness, and transparency. He takes great pride in the honest, high-quality service the team provides and rests easy knowing their customers are treated with respect and never feel taken advantage of. Outside of work, Paul enjoys going to concerts, taking road trips, and giving back through volunteer work.

Joe

Office Manager

Joe, Office Manager

With over 20 years of experience in the plumbing industry, Joe brings a deep understanding of wholesale, retail, and service operations to the team. As Office Manager, he plays a key role in ensuring the company runs smoothly and that customers receive top-quality service from start to finish. Joe believes that the foundation of a successful plumbing company lies in treating every customer with respect, honesty, and integrity. This commitment to strong values and customer care is reflected in every aspect of his work. Outside the office, Joe is an avid fan of football, hockey, and wrestling, and proudly considers himself an amateur movie buff. When time allows, he loves hitting the road to explore the incredible sights and hidden gems across the United States.

Manny

NBWH Technician

Manny, NBWH Technician

Manny has been in the plumbing and water heater trade for over ten years, with a strong focus on quality and attention to detail. He’s especially skilled in installing, servicing, and troubleshooting tankless water heaters. He takes pride in doing the job right and always treats customers like family. When he's not working, he's a proud dad of two amazing kids and enjoys playing soccer. Friendly, reliable, and passionate about his craft, Manny is someone you can trust to get the job done right.

Osi

NBWH Technician

Osi, NBWH Technician

Osmani has been working in the plumbing and water heater trade for the past three years. He enjoys the hands-on nature of the job and the fact that every day brings a new challenge to tackle. A Las Vegas native and proud father of two daughters, Osmani brings a strong work ethic and friendly attitude to every job. Outside of work, he’s a big fan of sports and gaming. Osi believes in doing honest work and treating customers like family.

Michael

NBWH Technician

Michael, NBWH Technician

With over ten years of experience in the plumbing and water heater trade, Michael brings both expertise and dedication to every job. Known for his reliability and attention to detail, he takes pride in helping customers find efficient, lasting solutions for their home and business needs. Outside of work, he’s a devoted husband and father who enjoys staying active by playing soccer. When he’s not on the field or with family, you might find him at church events or rewatching his favorite film, The Matrix.

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It was so convenient that everything was done in one day and we were able to have hot water immediately...Highly recommended! If you have water heater issues, give these guys a call!

    Raina M.

    They responded within a couple of hours, and sent texts confirming their appointment time and also another when they were in the way...These guys are top notch in my book, and I would highly recommend them to anyone in need of their services.

      Eric M.

      Our water heater broke and flooded our home over night. Called first thing in the morning and he came right out within 30 mins. Honestly he made my anxiety go away...Great work, great company, great guy. THANK YOU!

        Stefanie P.

        Very efficient, knowledgeable and reasonably priced. David is very professional and does clean work. I will definitely be calling & referring NBWH for all of my water heater needs!

          Brian N.

          The city inspector was an enigmatic man but he seemed impressed by the installation. He commented that Nothing But Water Heaters included something that was required by code but a lot of installers don't do it. Nothing But Water Heaters went above and beyond for me!

          April L.
            April L.

            I definitely recommend David and his company and will use and refer him when needed! The reviews don't lie and I can see why this honest and fair company has such high reviews!

            Stephanie C.
              Stephanie C.

              Simply put, this THE BEST water heater company in town. I've used them now at two different properties and on three different occasions. After my great experience with them, I will never go elsewhere. I stay loyal because they are honest and do great work for a fair price. I'm all about Nothing But Water Heaters for life!

              Bobbi B.
                Bobbi B.

                He initially checked to see if it was repairable, but unfortunately it was beyond repair. Gotta love that Vegas hard water...After roughly an hour, we had a new water heater, and hot water has been restored in our household. Thanks David for making the process as easy as can be, all things considered.

                Levi L.
                  Levi L.

                  Another satisfied customer! David and Ronald were unbelievably friendly, professional and extremely reasonably priced. Would recommend and work with them again in a heart beat. David made sure we knew everything about our products. He was very patient and easy to understand. I noticed that small business' always go out of their way for customer satisfaction.

                  Ana M.
                    Ana M.

                    Recommend for water heater issues. Showed up on the same day. Zero sales pitches. Professional, knowledgeable, and courteous...We've seen several other plumbing companies in our neighborhood—sometimes revisiting the same house multiple times. So, I feel we called the BEST company to assess and fix our issue the RIGHT WAY on the FIRST VISIT.

                    Foodie M.
                      Foodie M.

                      Excellent service and reliable! We had a small leak and called them in the morning and they showed up same day two hours later and we replaced our water heater completely. Ronald was personable, knowledgeable and we are so thankful this company was able to assist in such a small time frame. Definitely recommend this company!

                      Yoysh G.
                        Yoysh G.

                        Contacted the company over Yelp in the evening and they were out the very next day. Install was seem less and Ronald was informative and helped set up everything! Super happy with the sales process. It wasn't a lot of haggling (for example I had one company start with a price around $2k and they went down to $1400). Enough with the back and forth, just go [call] Nothing But Water Heaters. They're great!

                        David F.
                          David F.

                          Great company was out in 20 minutes and Ronald who came out told me my pilot light was out he relit it and charge me nothing for the service. That was very honest he could have told me anything cause I am clueless on water heaters you should call Ronald or David people you can trust!!!!

                          Joeythetonerguy B.
                            Joeythetonerguy B.

                            #1 in customer satisfaction

                            Nothing But Happy Customers

                            We love our happy customers, and appreciate that they shared their happiness.