Tankless Water Heater Services in Richardson, TX

You Deserve An Efficient, Quality Tankless Water Heater

As a certified Navien and Rinnai Tankless Water Heater installer and service provider, NTX Plumbing is proud to offer Richardson residents the best in Tankless Water Heater Solutions.

Our old water heater just went out but my wife and were already prepared to transition to a tankless one. We couldn't be anymore satisfied with the installation process through NTX Plumbing. They were as professional as can be and very communicative. Price was affordable compared to two other companies. Jose and Scott got the job done in a very timely manner and do very clean work. I highly recommend for any plumbing needs.

Nicholas M. via Google

NTX plumbing was great to work with! We used them for a hot water heater replacement and a slab leak fix. Their prices were fair, and each NTX employee we worked with was super helpful, professional, and knowledgeable. NTX went out of their way to accommodate me, explained the issues in an a clear and concise manner, gave me options, and answered every question I had. Thanks Alex, Jose, Scott, Juan, and technician who worked with Juan! You all were fantastic!

Chrissy D. via Google

Not only do they provide their tremendous knowledge and care in your project, they work through the process to ensure each element is considered and accounted for. So in the end, you receive a properly completed project but, you also feel understood as a client with needs and educated on the why/how of accomplishing your project.

Joel W. via Google

Very Clean Work

Super Helpful

Tremendous Knowledge

Person washing hands with warm water

The Ultimate Tankless Water Heater Solutions For Your Home

If you're a homeowner, you understand the importance of having a dependable and efficient water heater. High utility bills and cold showers are an unwelcome reality for many homeowners, especially during winter. But with a Navien or Rinnai tankless water heater, you can rest assured that you'll always have access to hot water at the most affordable rate.

These tankless water heaters are some of the most energy-efficient and cost-effective heaters on the market today. At NTX Plumbing, we are certified Navien and Rinnai Tankless Water Heater Dealers. From tankless water heater installation to maintenance and repair, our team of experts is here to ensure that your tankless water heater is always running at peak performance.

What Are Some Benefits of a Navien Tankless Water Heater?


These heaters use advanced technology to heat water on demand, which means you only use energy when you need it. As a result, you will see substantial savings on your energy bill each month. On average, Navien tankless water heaters deliver 80 to 97% energy efficiency, far exceeding conventional tank heaters. The Navitech™ stainless steel burner system is designed to minimize heat loss and maximize efficiency.


The cost of purchase and installation of a Navien Tankless Water Heater can be higher than that of a conventional heater, but the long-term savings are undeniable. Along with saving on your energy bill each month, you will also extend the life of your water heater. Navien tankless water heaters are backed by a warranty, which is another factor that contributes to their cost-effectiveness. These heaters are built to last, providing years of trouble-free operation with very little water tank heater maintenance required.


These heaters can be easily installed in any home, regardless of size or layout. Navien tankless water heaters also provide an endless hot water supply, so you'll never have to worry about running out. This is particularly of benefit to you if you have a large family or if your home has multiple bathrooms. The NPN series is well known for reducing or eliminating noise levels so you can enjoy unlimited hot water without any disruptive sounds. The small, wall-hung units are 80% smaller than conventional storage tank heaters, so they take up very little space and are designed to be lightweight.

Your Navien Tankless Water Heater Options

NTX Plumbing is proud to offer our clients the full line of Navien tankless water heaters, including the award-winning NPE and NPN series. NTX Plumbing's certified Navien tankless water heater experts will help you choose the perfect model for your home based on your unique needs and requirements. With Navien tankless water heaters professionally installed in your home, you can achieve a completely custom solution. With flexibility at the brand's core, Navien offers a wide range of tankless water heater models to meet any home's specific needs.



The Navien NPE tankless water heater is the perfect choice for any home and is named by Navien as the "#1 selling high efficiency condensing tankless water heaters in North America". These heaters use a unique stainless steel heat exchanger to deliver exceptional performance and durability. The NPE series also features Navien's exclusive ComfortFlow Technology™, which sees a built-in recirculation pump and buffer tank working to provide hot water on demand, even in larger homes. These tankless water heaters are available in indoor and outdoor models and can be easily integrated into any home.

The New NPE-A2 Series and NPE-S2 Series range offers seven models with:

  • Up to 199,000 BTU inputs for quick and efficient hot water delivery
  • Indoor and outdoor models are available
  • Available in propane or natural gas
  • Compact, lightweight design
  • Low operational costs
  • Lower C02 emissions than traditional tank heaters
  • Exclusive Navien ComfortFlow™ Technology for endless hot water in NPE-A2 Series
  • The ability to cascade up to 32 units with Navien Ready-Link® technology
  • Dual stainless steel heat exchangers for exceptional durability and performance



The Navien NPN Series is the perfect tankless water heater for smaller homes or as a point-of-use heater. These heaters are designed to be small and lightweight yet still deliver the same high-efficiency performance that Navien is known for. The NPN series features an easy installation process and can easily integrate into any home. These tankless water heaters are available in both indoor and outdoor models. Your NPN tankless water heater can also be cascaded with another Navien NPN tankless water heater to provide an even greater flow rate.

The NPN-U Series offers three models with indoor-outdoor design with an integrated control panel for ease of use.

The NPN-E Series offers four models for outdoor use with Navien's Patented NaviTech™ technology that provides extremely Low NOx, making it one of the most environmentally friendly tankless water heaters on the market.

Added Features and Accessories

Of course, your Navien tankless water heater wouldn't be complete without a few added features and accessories to make your life easier. NTX Plumbing offers a wide range of Navien tankless water heater accessories, such as the NaviLink™ Wi-Fi remote control, which allows you to control your heater and access its data from anywhere using your smartphone or tablet. The Navien HotButton will enable you to deliver hot water on demand to only the areas that you need it with the push of a button.

Need Help Deciding Which Series or Model is Right For You?

The NTX Plumbing team will help you to find the perfect fit for your home!

What Are Some Benefits of a Rinnai Tankless Water Heater?

Rinnai is a leading manufacturer of tankless water heaters, and their products are known for their quality, durability, and performance. Manufactured in the USA, Rinnai tankless water heaters are available in a wide range of models to suit any home's needs, and they offer several benefits over traditional tank water heaters, including:

Unlimited Hot Water

Rinnai tankless water heaters provide an endless hot water supply, so you'll never have to worry about running out and never need to prioritize your hot water usage. The hot water will stay hot until you turn off the tap, so you can take a long shower while running your washing machine and doing dishes without worrying about running out of hot water. Smart-Circ™ Intelligent Recirculation™ ensures that you have hot water ready when you need it by learning your usage patterns.


Rinnai tankless water heaters are the epitome of energy efficiency because you only heat up the water when needed. This means that you're not wasting energy maintaining a tank of hot water that you might not use, and you are bound to see significant savings on your energy bills each month. Rinnai's ENERGY STAR® certified units go further to offer additional energy savings.

Space-Saving Design

Rinnai tankless water heaters are small and can be hung on a wall, so they don't take up valuable space in your home like a traditional tank water heater. This makes them great for small homes or homes with limited storage space. Easily store your Rinnai tankless water heater in a closet or cabinet for sleek and discreet storage.

Increased Value

The Rinnai tankless water heaters are built to last. NTX Plumbing is a certified Rinnai PRO, which means we offer professional tankless water heater maintenance and repair at the most cost-effective rates. With proper maintenance, your Rinnai tankless water heater will last for many years and will likely increase the value of your home. Tankless water heaters are also lower-maintenance than traditional tanks. With the ability to repair small issues instead of replacing the entire tank and last up to twice as long, you can enjoy all the benefits of tankless water heating without worrying about ongoing maintenance or replacement.

Technically Integrated

Rinnai tankless water heaters are technologically advanced and have many features that make them easy to use and maintain. Purchasing the control-r™ module allows you to integrate your Rinnai tankless water heater into your smart home system for easy control from your smartphone or tablet. Use voice commands to control the temperature of your water or get automatic maintenance and error alerts that will be sent straight to your mobile device so you can call NTX Plumbing immediately to resolve any issues quickly.

Your Rinnai Tankless Water Heater Options

Rinnai offers a wide range of condensing, non-condensing, and hybrid tankless water heater models that are powered by natural gas or propane. This allows you to choose the perfect tankless water heater for your home's needs. Rinnai's RSC, RUR, RU, RUCS, and RUS model series offer super-high efficiency and are tailored to large homes requiring maximum output. The RL, RLX, V, and RE/REP model series offer high efficiency in a more compact design that is perfect for small homes or apartments. The Hybrid CHS Series provides the best of both worlds and is perfect for situations where an emergency replacement is needed.

Rinnai Condensing Tankless Water Heaters

Condensing tankless water heaters are the market's most popular and efficient type of tankless water heater. They can achieve such high efficiency because they extract waste heat from the exhaust gases and use it to preheat the cold water that enters the unit. This allows them to heat water more quickly and with less fuel, resulting in significant energy savings. Rinnai's condensing tankless water heaters are available in a wide range of models to suit the needs of any home. All condensing tankless water heaters are ENERGY STAR® Certified, and the RSC and RU model series are wifi-compatible for convenient remote operation.

Rinnai Non-Condensing Tankless Water Heaters

Non-condensing tankless water heaters are perfectly suited to homes in warm climates or homes that do not have the space to vent a condensing unit. Apartments, small homes, and garages are all common examples of places where a non-condensing unit would be a good choice. Rinnai's latest V94 models offer almost ten gallons of output per minute with 199,000 BTU and an energy factor of up to .82 EF rating. Most of the REP models have a built-in recirculation pump which means they can provide hot water faster by recirculating the water in the lines back to the heater. Most of the RE and REP models are compatible with Rinnai's control-r™ module so that you can have the convenience of smartphone or tablet control even with a non-condensing unit.

Rinnai Hybrid Tankless Water Heaters

Rinnai's Demand Duo® Hybrid Water Heating System offers the best of both worlds, providing the endless hot water of a tankless water heater with the added security of a backup tank. A hybrid model's flexibility is the ultimate convenience, making it the perfect choice for those who need propane or gas tankless water heaters. The CHS series can be used both inside and outside and has an 80-gallon heating capacity. Rinnai's Demand Duo® Hybrid Water Heating System offers a 97% thermal efficiency rating due to the water being heated outside of the tank. The unit can be connected to Rinnai's control-r™ module for remote control operation.

Need a Hand Deciding Which Rinnai Model Is Right For You?

Our specialist team is here to help!