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The Rinnai SENSEI RX199iN is a condensing tankless water heater with a 199,000 BTU maximum input and up to 11.1 GPM of hot water. Its 0.98 UEF and ENERGY STAR rating put it among the most efficient gas tankless units, and it runs on natural gas or propane with indoor or outdoor installation through the Versa-Vent accessory. It suits larger homes with several bathrooms running at once. Against non-condensing rivals it recovers more heat from the exhaust, and its cascading and recirculation support lets it grow with a household, though it needs adequate gas supply and venting to perform at full output.
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Owners of the SENSEI RX series report steady hot water for multiple fixtures and lower gas use than their old tanks. Complaints center on installation cost and the accessories needed for Wi-Fi and outdoor venting.
The Rinnai SENSEI RX199iN is a condensing tankless water heater for residential use. It heats water only when it is needed, so it supplies hot water on demand. The unit is compact, about the size of a small suitcase.
It runs on either natural gas or propane and uses direct electronic ignition. It can be installed indoors or outdoors with the Versa-Vent accessory. It is cascading, recirculation and Wi-Fi capable.
The unit is ENERGY STAR certified for residential use and SCAQMD approved as Ultra Low NOx. It has a Uniform Energy Factor of 0.98. The SENSEI RX Series is engineered to last up to twice as long as traditional tank water heaters and to carry twice the warranty length.
