Rinnai RXP199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater Up to 11.1 GPM 199,000 BTU

The RINNAI CHS199100CUIN is a commercial-grade hybrid tankless water heater in the H-Series Demand Duo line, designed for facilities that require continuous, on-demand hot water with built-in redundancy. Running on natural gas, it delivers a maximum output of 199,000 BTU/h and a minimum modulation down to 15,000 BTU/h, giving installers a wide firing range to match varying load demands.

The RINNAI CX199I is a condensing tankless water heater rated at 199,000 BTU/h with a 97 percent thermal efficiency rating. It operates on a continuous on-demand flow model, heating water only when there is demand rather than maintaining a stored tank.

The Rinnai IP150199C is a Combi Condensing Gas Boiler from the I-SERIES Plus line, designed for both central heating and domestic hot water. This model features Smart Sense Adaptive Gas Valve technology, allowing fuel type selection without conversion kits.

The RINNAI RXP199I is a condensing tankless water heater rated at 199,000 BTU/h with a Uniform Energy Factor (UEF) of 0.96. This unit heats water on demand, eliminating standby heat loss associated with traditional tank-style heaters.