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  1. Tankless Water Heaters | Rinnai

    Rinnai tankless water heaters last up to twice as long, have twice the warranty, and save energy as they only heat water when it is needed. Consumer financing and rebates are also often …

  2. Leading Tankless Water Heater in the US | Rinnai

    At Rinnai, our passion for constant improvement drives us to create incredibly innovative products for both home and commercial use. Discover why millions of families rely on their Rinnai …

  3. RU Model Series | Rinnai

    Enjoy all the comfort and performance you expect from Rinnai, for less, with our super high-efficiency plus RU models. These compact units are powerful enough to meet your needs, …

  4. Direct Vent Furnaces | Rinnai

    Create consistent heat and energy efficiency with Rinnai technology that optimizes gas usage. Each model features advanced modulating technology, which responds to even the smallest …

  5. Contact Us | Rinnai

    Whether you have a question about a Rinnai product, need support, or would just like to give us some feedback, we're happy to hear from you.

  6. Condensing Boilers | Rinnai

    Rinnai condensing boilers are user-friendly and dependable for heating your home and your water. Each model continually adjusts to maximize efficiency and optimize performance — …

  7. RL Model Series | Rinnai

    Our high-efficiency-plus RL models offer Rinnai’s most advanced technology in non-condensing tankless water heaters. You’ll enjoy the limitless hot water and energy savings you expect, …

  8. Document Library - Rinnai

    Explore all Rinnai brochures, case studies, energy guides, manuals, spec sheets, warranties and more.

  9. Solution Selector | Rinnai

    Find your ideal Rinnai tankless water heater system; simply take a few minutes to answer questions about your home and we'll recommend a solution to best fit your needs.

  10. Water Heating Solutions (C) | Rinnai

    Add that to our rigorous product testing before shipping and the industry's leading warranty, and you'll see why Rinnai is the complete commercial water heating solutions for any business.