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Rinnai Ultra Series Tankless Water Heaters deliver innovation and technological leadership in condensing tankless water heating design. Providing homeowners with an endless supply of hot water, energy savings, a space saving design and environmental benefits, Rinnai offers ease of installation now with more venting options right out of the box. As the only manufacturer to offer both concentric and twin-pipe PVC venting, no adaptor is necessary to give you double the venting options on every installation. One unit. Two venting options. From one project to the next, with the RUC line of Ultra Series Tankless Water Heaters the freedom of choice is yours … right out of the box.

  • Delivers an endless supply of hot water whenever and wherever it’s needed – simultaneously to multiple fixtures.
  • The ONLY manufacturer to offer both Concentric and PVC, providing more venting options right out of the box saving you time, money and the best flexibility to get the job done fast.
  • Up to .96 Energy Factor (ENERGY STAR® qualified)
  • Similar in size to a carry-on suitcase, our space-saving design allows installation almost anywhere.
  • Earth-friendly technology produces lower CO2 emissions which contribute to cleaner air and a healthier environment.
  • Min. BTU Input - 15,200
  • Max. BTU Input - 199,000
  • Warranty (Residential) - Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor)
  • Warranty (Commercial) - Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor)

Note: This unit can be upgraded to a Commercial Unit with the purchase of an optional Commercial Controller (MC-195T, MC-100V-1W, BC-100V-1W, MCC-91-2US). This will increase the Temperature Range to 98° to 185°F.

Need this water heater installed? Rinnai can help! Simply call 844.348.4715.
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Product Type:
Tankless Heater
Installation Type:
Indoor Only
Fuel Type:
Natural Gas
Energy Star Rated:
Energy Factor:
BTU Input:
Temperature Range (F):
98°F to 140°F
Flow Range (GPM):
0.26 - 9.8
Gas Connection:
Cold Water Inlet (NPTM):
Hot Water Outlet (NPTF):
Height (Inches):
Width (Inches):
Depth (Inches):
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