Contact Us


    If you are needing emergency service and it is out of our normal working hours (M-F 8-5), please contact us at 210-798-8000. Thank you.

    tankless water heaterYour family can relax and enjoy tankless water heaters in San Antonio, TX. The plentiful hot water on demand gives you that refreshing hot shower when you need it most. When you’re ready to do the laundry, it’s ready without delay. Plentiful hot water has so many ways to make you and your family smile!

    Don’t worry about flooding from your tank-based water heater while you’re away. Rosenberg Plumbing & Air tankless hot water installation replaces the old tank with instant hot water when needed. It also lasts much longer than tank-based water heaters, up to 20 years or more.

    What Does The Latest Generation of Tankless Hot Water Offer?

    Generations of tankless water heaters have supplied homes with all the hot water they need, using only the energy needed. Tanks hold and heat your supply, even when you’re away. Increasingly popular tankless water heaters are adding refinements. New recirculating systems avoid “cold water sandwich” surprises.

    Replacing tanks with tankless required more plumbing changes for tankless water heater installation. Manufacturers have reconfigured newer models to replace tank-based water heaters more easily. From modern controls to easier servicing, there’s a lot to love!

    Our comprehensive tankless hot water installation process offers:
    • Hot water capacity planning to meet your home’s needs
    • Energy needs planning
    • Removal of old tank-based equipment
    • Installation of your choice of compact tankless water heaters

    tankless water heater adjustmentYour new tankless water heater installation is designed to fit your family’s flow needs. Rosenberg Plumbing & Air plumbers can also upgrade your existing unit to supply simultaneous uses like multiple showers or bathing and washing clothes. They’ll ensure that you have enough power or gas supply for peak usage. Tankless water heater installation removes a 40 gallon tank that’s slowly heated 24 hours a day. You’ll get the hot water you need, right away, using only the energy that’s necessary.

    Experienced Tankless Water Heater Installation in San Antonio

    If you like reading reviews, get ready! Our Rosenberg Plumbing & Air customers have posted over 10,000, and enjoyed our service since the last century and beyond, over 37 years. With our skilled plumbing, HVAC, and other services for your home, we make planning updates and handling emergencies a breeze.

    We have plenty of awards, a BBB A+ rating, and customers who find us friendly and respectful. We’re clear with communication and pricing, follow up to ensure your satisfaction, and are available 24/7 for emergencies. Count on us as your ongoing, trusted plumbing and HVAC resource in San Antonio!

    Do you want energy-efficient hot water in San Antonio that fits your lifestyle? Learn about tankless water heaters from Rosenberg Plumbing & Air, call today! You can also count on us for traditional water heaters, garbage disposals, drain cleaning, and more.

    Tankless Water Heater FAQs

    Is a tankless water heater worth installing in San Antonio?
    A tankless water heater can be a good option for San Antonio homeowners who value on-demand hot water, a smaller equipment footprint, and reduced standby energy use. Whether it is worth the investment depends on household hot-water demand, existing gas or electrical capacity, installation cost, efficiency goals, and the equipment being replaced.
    What is included with tankless water heater installation?
    Tankless water-heater installation typically includes evaluating household hot-water demand, sizing the equipment, removing existing equipment when necessary, mounting and connecting the new unit, completing required plumbing, gas, electrical, or venting modifications, and testing the system for proper operation.
    How often should a tankless water heater be serviced?
    Tankless water heaters require periodic maintenance, which may include flushing mineral buildup, checking filters and components, and completing manufacturer-recommended inspections. The appropriate service interval depends on the equipment, household use, and water quality, with harder water sometimes requiring more frequent scale control.
    What are the signs my tankless water heater needs repair?
    Signs a tankless water heater may need repair include inconsistent water temperature, reduced hot-water output, error codes, unusual noises, leaking, low flow, repeated shutdowns, or a unit that stops producing hot water. The specific error code and operating symptoms can help narrow down the cause.
    How long does a tankless water heater last?
    Tankless water-heater lifespan varies by equipment, installation quality, household use, water quality, maintenance, and scale buildup. Manufacturer guidance for the specific unit is more useful than assuming every tankless system will reach a fixed service life.
    How do I choose the right tankless water heater for my home?
    Choosing the right tankless water heater requires calculating peak hot-water demand, expected simultaneous fixture use, required flow rate, incoming water temperature, fuel source, and available gas or electrical capacity. Proper sizing is important because an undersized system may not keep up when several fixtures need hot water at the same time.

    Helpful Tankless Water Heater Resources

    Schedule Tankless Water Heater Service