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The Rinnai REP160iN is an indoor natural gas tankless water heater rated at 6.6 GPM and 160,000 BTU, with a built-in recirculation pump and Smart-Circ logic that learns your hot-water habits. It is non-condensing, so it vents through concentric PVC/CPVC pipe with a single wall or roof penetration, and its 0.81 Uniform Energy Factor is modest next to condensing units. It suits small to medium homes or remodels that want endless hot water and faster delivery at the tap without a separate recirculation pump. Against condensing rivals it is simpler to vent and cheaper to install, but less efficient; against plain tankless units it adds recirculation and Wi-Fi readiness.
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The Rinnai REP160iN is an indoor, natural gas, non-condensing tankless water heater rated at 160,000 BTU and 6.6 GPM. It is about the size of a small suitcase. It can be installed in non-traditional spaces such as crawl spaces and attics. Professional installation is required.
It heats water only when hot water is needed, and it can supply multiple fixtures at the same time. A built-in recirculation pump includes Smart-Circ, which learns your water usage patterns to provide hot water on your schedule. Homes without a dedicated return line can use a thermal bypass valve, which is purchased separately, to get recirculation.
The concentric venting system has an inner pipe for exhaust and an outer pipe for fresh outdoor air. This makes it a direct-vent system with one penetration through the wall or roof. Vertical or horizontal PVP/CPVC termination configurations are available. The unit is Wi-Fi ready and requires a control-r module.
