Enjoy an endless supply of hot water with the RUCS65iN, our Super-High Efficiency condensing natural gas tankless water heater from Rinnai. Only the size of a small suitcase, the RUCS65iN is compact, easy-to-install and perfect for indoor locations.
Save time with hot water whenever and wherever you need it, any size home, even for simultaneous uses at multiple fixtures
Maximum output, minimum space. Suitable for installation in non-traditional spaces such as crawl spaces and attics
Energy Factor of 0.93 / Uniform Energy Factor of 0.85
Save energy and reduce utility costs by operating only when hot water is needed