Endless Hot Water Delivered

Radiant Plumbing delivers unmatched service for Texas homes, offering expertise in electric and gas tankless water heater installations, tailored to Texas climates. Enjoy endless hot water, energy savings, and comfort.

Radiant Plumbing Tankless Water Heater Install


Our Tankless Water Heater Services

When you choose Radiant Plumbing and Air for your tankless water heater installation, you’re not just getting a service provider; you’re gaining a partner dedicated to elevating your home’s comfort and efficiency. Our seasoned plumbers, backed by years of experience, approach each installation, repair, and service call with a meticulous focus on ensuring a seamless transition to a tankless hot water system. We understand that Texas homeowners have diverse needs, and that’s why we offer expertise in both electric and gas tankless water heaters, tailoring our solutions to suit your home and lifestyle.

Austin Service Area

Greater Austin & Beyond

We proudly service the following cities and neighborhoods in Austin, TX:

Not seeing your area? Give us a call at 512-265-6994


Greater San Antonio & Beyond

We proudly service the following cities and neighborhoods across San Antonio, TX:

Not seeing your area? Give us a call at 210-294-6703

Radiant Branches

Lone Star Locals

Radiant Plumbing and Air Conditioning operates across Austin and San Antonio, keeping over 10,000 homeowners happy with home repairs, installations, and maintenance. 

Austin, TX

A map showing the area of Austin that Radiant serves

San Antonio, TX

A map showing the area of San Antonio that Radiant serves

Plumbing Blog

The Radiant Difference

Discover The Radiant Difference

Experience unparalleled expertise, reliability, and skill in every home service we provide.

Decades of Excellence in Home Services

For over 20 years, Radiant Plumbing & Air has set the standard for professional home services. Our team of licensed and insured technicians brings unmatched expertise to every job, ensuring reliable repairs and maintenance. We're committed to excellence, and it shows in every task we undertake.

Dependable Service, Every Time

Trust is the cornerstone of our services at Radiant. We guarantee the reliability of our installations and repairs, conducted only by our fully licensed and insured professionals. With us, you can be confident that your home systems are in skilled hands.

Your All-in-One Home System Experts

Whether it’s plumbing woes or air conditioning tune-ups, Radiant Plumbing & Air covers it all. Our comprehensive equipment expertise means we’re equipped to fix all types of home systems. From routine maintenance to complex repairs, we handle every challenge with skill and efficiency.

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Total Home Coverage

Our comprehensive plumbing services ensure your entire home plumbing system functions flawlessly. Explore how we can enhance your home’s plumbing infrastructure with a range of expert services designed for efficiency and reliability.

Call or Schedule Your Service Online!

Call or Schedule Your Service Online!

Call or Schedule Your Service Online!

Tankless water Heaters

Frequently Asked Questions

Can I install a tankless water heater myself?

While some homeowners with advanced plumbing skills may consider installing a tankless water heater themselves, it’s important to note that, in Texas, all water heaters must be installed by licensed professional plumbers. At Radiant Plumbing and Air, we have been expertly installing hot water heaters throughout central Texas since 1999. Our seasoned professionals are well-versed in the intricacies of tankless heaters, ensuring not only a smooth installation process but also guiding you to maximize available rebates for your home upgrade.

Handling the installation of a tankless unit involves intricate work with gas lines, electrical components, and complex plumbing connections. Even for those with advanced plumbing knowledge, the risks associated with mistakes during installation, such as safety hazards, inefficiencies, or potential damage to the unit, make professional installation the wisest choice.

Our licensed plumbers bring the expertise needed to ensure proper installation, compliance with local codes, and the safe functioning of the unit. When you choose Radiant Plumbing and Air, you not only secure the benefits of a top-notch tankless water heater but also the peace of mind that comes with professional installation. For a hassle-free and expertly executed installation, contact us today, and let’s make your journey to a more sustainable future a great success with a reliable tankless water heater. Learn more about our services here.

Choosing the right tankless water heater for your home involves a thoughtful consideration of various factors tailored to your specific needs. Tankless water heaters are rated based on the maximum temperature rise possible at a given flow rate. When sizing a demand water heater, it’s crucial to take into account factors such as flow rate and the temperature rise required for its intended application, whether it’s for the entire house or a remote location like a bathroom.

To pinpoint the ideal size, calculate the flow rate (in gallons per minute or GPM) needed for simultaneous hot water use in your household. This step is essential in selecting a tankless unit with an adequate GPM rating. Costs for tankless water heaters can vary based on size, features, and energy source, typically ranging from $500 to $2,500, excluding installation.

For a comprehensive understanding of your specific requirements, we encourage you to contact Radiant Plumbing and Air, your trusted experts in tankless water heater solutions. Our professional plumbers have the expertise to assess your needs, calculate the appropriate unit size, and provide accurate cost estimates for both the unit and installation. With Radiant Plumbing and Air, you can make an informed decision that aligns perfectly with your home’s unique hot water demands. Call us today to get started on upgrading your home’s water heating system.

Absolutely, tankless water heaters can lead to significant cost savings over time. As stated by Energy.gov, “For homes that use 41 gallons or less of hot water daily, demand (or tankless) water heaters can be 24% to 34% more energy efficient than conventional storage tank water heaters.” If gas-fired, tankless water heaters can save homeowners over $100 annually, and even electric tankless water heaters provide savings of around $44 per year, according to the US Department of Energy.

While the initial investment in tankless water heaters is typically higher compared to traditional tank-style heaters, the long-term energy efficiency and on-demand heating make them a cost-effective choice. Unlike traditional heaters, tankless units only operate when hot water is needed, eliminating standby heat loss. This on-demand heating not only reduces energy consumption but also translates to lower utility bills.

It’s important to note that the actual savings will depend on factors such as your specific hot water usage patterns, local energy costs, and the efficiency of the unit. At Radiant Plumbing, our expert team can guide you through the process, helping you make an informed decision that aligns with your budget and energy-saving goals. Learn more about the potential savings with our tankless water heaters and how they can contribute to a more efficient and cost-effective home.

Yes, tankless water heaters can use gas as a power source. Gas-powered tankless water heaters are commonly fueled by natural gas or propane. The gas burner heats the water as it flows through the unit’s heat exchanger, providing an on-demand and continuous supply of hot water. Gas tankless water heaters are known for their efficiency and ability to deliver high volumes of hot water, making them a popular choice for many households. However, it’s important to ensure that your home has the necessary gas infrastructure and that the installation is performed by a licensed professional to ensure safety and compliance with local codes.

A tankless hot water heater operates by heating water on demand as it flows through the unit, eliminating the need for a storage tank. When a hot water tap is opened, cold water passes through a heat exchanger powered by gas or electricity, providing an instantaneous and continuous supply of hot water. Unlike traditional water heaters, tankless units don’t store preheated water, minimizing energy waste. Temperature control features allow users to customize the hot water output, making tankless heaters energy-efficient and suitable for on-demand heating.