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The Rheem RTGH-S11I is a condensing gas tankless water heater rated at 199,900 Btu/h for indoor installation. It heats water on demand for continuous whole-home hot water and can run on natural gas or propane. Condensing operation recovers heat from the exhaust, so it is more efficient than non-condensing tankless units, but it needs a condensate drain and approved venting. It suits larger homes with high simultaneous hot-water demand; smaller households may find the capacity and gas supply requirements more than they need.
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The Rheem RTGH-S11I is part of the IKONIC line. It is a super high efficiency condensing tankless water heater for indoor installation. It heats water on demand to supply continuous hot water for the whole home.
It has an input of 199,900 Btu/h and can be set up for natural gas or propane. Installation requires a gas line and meter that can supply 199,900 Btu/h, a condensate drain and approved venting. An isolation valve kit is needed for descaling service.
