Rinnai RC80i

Rinnai RC80i Commercial Condensing Tankless

The Rinnai RC80i condensing tankless water heater delivers more efficiency than any of the previous models before. These systems are suitable for commercial applications employing a specialize commercial digital controller.  This controller allows the heater to output water temperatures between 98°F – 185°F , much hotter than residential applications.  The RC80i is capable of performing all this at an efficiency rating of 97% .  Rinnai’s condensing tankless water heaters offer all the same benefits homeowners have come to expect to the industrial and commercial settings. The “ultra condensing efficiency” of the RC80i offers substantial savings and contributes to a green-friendly environment. Exhaust gas temperatures don’t exceed 35 degrees Celsius (90 Fahrenheit) making the venting and installation process clean, simple, and cost effective.

Endless Hot Water

Rinnai RC80i tankless water heaters heat the water you need, when you need it; turning city, well, and lake water hot, on demand. With a tankless system you are not limited to the amount a storage tank heater can hold. Whether you are washing equipment, running a large kitchen, or servicing multiple bathrooms,  Rinnai’s tankless water heater technology will supply endless hot water on demand-even if they happen all at once!

The Safe And Cost Effective Choice In Venting

Rinnai introduced the combination of tankless technology and concentric venting to North America to deliver a high level of comfort, efficiency and safety. In keeping with Rinnai’s commitment to reliability and safety, the tankless condensing water heater utilizes concentric venting with a polypropylene inner pipe, designed to withstand varying conditions that may be experienced over the life of a condensing tankless.

Rinnai’s Concentric Venting Is A Great Solution

  • Engineered especially for gas appliance venting
  • Positive fit and lock allows for installation assurance
  • Two layers of pipe equals two layers of protection
  • Seals at every joint expanding and contracting with weather and temperature changes
  • No flammable, messy or harmful glues, cements, or solvents are used
  • Concentric venting allows zero clearance from combustibles
  • Special roof and side terminations create a high-end look
  • Single pipe venting speeds up installation and reduces cost


  • EZ Connect Cable To Join Multiple Units Together
  • Condensing Technology for Greater Efficiency and Significant Energy Savings
  • Up to 97% Thermal Efficiency
  • Natural Gas and Propane Models Available
  • Full Line of Rinnai Digital Controllers
  • 12-Year Warranty on Heat Exchanger, 5 Year Parts, 1 Year Labor


Width: 18.5 Inches
Height: 26.4 Inches
Depth: 10.5 Inches

71 Pounds

Approved Gas Types
Natural Gas or Propane

Minimum/Maximum Gas Rate (Input BTUs)
Natural Gas: 9,500 – 157,000 BTU
Propane: 10,300 – 157,000 BTU

Thermal Efficiency
Natural Gas: 96%
Propane: 96%

AC 120 Volts, 60 Hz

Electrical Consumption
Normal: 63 Watts
Standby: 2 Watts
Anti-Frost Protection: 220 Watts

Gas Connection
Gas Supply: ¾ Inch MNPT
Cold Water Inlet: ¾ Inch MNPT
Hot Water Outlet: ¾ Inch MNPT

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