Rinniai RU180IN 180K BTU 10 gpm  Tankless Water Heater
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Rinniai RU180IN 180K BTU 10 gpm Tankless Water Heater

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I acknowledge that this product must be installed by a licensed technician and that electrical products are non-refundable.


The Ultra series' condensing design features two heat exchangers, delivering Rinnai's most energy-efficient performance and value. It has the largest capacity for meeting multiple, simultaneous hot water demands.


  • Condensing, tankless, temperature controlled, continuous flow, gas hot water system
  • ENERGY STAR® qualified
  • Energy factor of .95
  • Built-in Rinnai Circ-LogicTM recirculation program cycles an external pump at pre-set intervals and temperatures to maximize efficiency and comfort
  • Enhanced scale detection lessens possibility of serious, long-term damage to unit
  • Temperature lock function prevents accidental or unauthorized changes to water temperature
  • Complies with south coast air quality management
  • Ext CTWH 199k BTU
  • 60 Hz
  • 120 Volts
  • 150 Max PSI water pressure
  • 15 Min PSI water pressure
  • 0.4 Activation GPM
  • Mounting harware included: Yes
  • Can provide sufficient on demand hot water for at least 2 persons showering at the same time: Yes

Product Details

  • Fuel Type: Liquid Propane
  • Maximum Flow Rate: 9.8 gallons per minute
  • Minimum Flow Rate: 9.8 gallons per minute
  • Outdoor Use: Yes