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  • ProLine® XE Tankless

    When it comes to high efficiency tankless water heaters, no one comes close to matching the expertise and innovation of A. O. Smith. With higher efficiency ratings and groundbreaking designs, our ProLine® XE tankless water heaters feature non-condensing and condensing technology and are part of a new era in water heating.

    • All condensing models are ENERGY STAR® qualified
    • Ultra-Low NOx options are available

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