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The Rinnai Sensei RXP199i is a condensing tankless water heater rated up to 199,000 BTU, with a 0.98 Uniform Energy Factor and ENERGY STAR qualification. Its standout feature is the built-in Smart-Circ recirculation pump, which learns household hot water patterns and runs recirculation on a schedule so hot water arrives faster without constant energy use. It installs indoors or outdoors with the Versa Vent adapter, and Rinnai's Smart Sense gas valve lets the same unit run on natural gas or propane without a conversion kit. It suits larger households replacing a tank or upgrading to high-efficiency hot water; against rivals, the built-in recirculation and dual-fuel flexibility are the main advantages, while Wi-Fi control requires the separate RWM200 module.
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The Rinnai Sensei RXP199i is a condensing tankless water heater with a built-in recirculating pump. It can also be installed outdoors with the Rinnai RXOVC Versa-Vent outdoor vent cap, sold separately. It is rated at 0.98 UEF and is ENERGY STAR qualified.
The Smart-Circ Intelligent Recirculation pump learns the household's hot water usage patterns and schedules recirculation to match. The unit's Smart-Sense gas valve lets it run on natural gas or propane. It converts to propane in the field with no conversion kit, and a propane rating label is included.
The unit has an integrated controller. It is Wi-Fi ready and works with the Rinnai Central mobile app when the RWM200 wireless module is added. It is rated for about 3 to 6 fixtures.
