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The Rinnai REP199iP is a propane-fired, indoor, non-condensing tankless water heater with a maximum input of 199,000 BTU and a UEF of 0.82. It modulates down to 10,400 BTU, so it throttles back for small draws instead of cycling on and off, and it is recirculation- and Wi-Fi-capable with a standard 120V supply. It suits small to medium homes and remodel jobs where a compact indoor unit with high peak output matters. Against condensing rivals it gives up efficiency (0.82 versus roughly 0.9-plus) and needs Category I venting, but it avoids condensate handling and acidic drain lines.
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Owners of Rinnai non-condensing tankless units generally report steady hot water and few service calls, and technicians rate the brand's build and parts support highly. The common complaints are install cost and venting requirements rather than reliability.
The Rinnai REP199iP is a propane gas, non-condensing tankless water heater for indoor installation. It is designed for small to medium homes and remodel applications. The compact, space-saving unit heats water on demand.
It has a Uniform Energy Factor (UEF) of 0.82. Its input ranges from a minimum of 10,400 BTU to a maximum of 199,000 BTU, so it adjusts to different household hot water demands. It is recirculation capable and Wi-Fi capable for control and monitoring. It runs on a 120V power supply.
