Our RUCS models — part of Rinnai’s Luxury Series — offer the highest output of our condensing line of tankless units. They deliver sleek, modern design and a range of features and benefits to fully satisfy the hot water demands of larger homes.

RUCS65iN

Enjoy an endless supply of hot water with the RUCS65iN, our Super-High Efficiency condensing natural gas tankless water heater from Rinnai. Only the size of a small suitcase, the RUCS65iN is compact, easy-to-install and perfect for indoor locations.

• Energy Factor: 0.93
  Uniform Energy Factor: 0.85
• Warranty 12 yr / 5 yr / 1 yr

• 10,300 BTU (minimum)
  130,000 BTU (maximum)
• Indoor Only

RUCS65iP

Enjoy an endless supply of hot water with the RUCS65iP, our Super-High Efficiency condensing propane fueled tankless water heater from Rinnai. Only the size of a small suitcase, the RUCS65iP is compact, easy-to-install and perfect for indoor locations.

• Energy Factor: 0.93
  Uniform Energy Factor: 0.85
• Warranty 12 yr / 5 yr / 1 yr

• 10,300 BTU (minimum)
  130,000 BTU (maximum)
• Indoor Only

RUCS75iN

Enjoy an endless supply of hot water with the RUCS75iN, our Super-High Efficiency condensing natural gas tankless water heater from Rinnail. Only the size of a small suitcase, the RUCS75iN is compact, easy-to-install and perfect for indoor locations.

• Energy Factor: 0.93
  Uniform Energy Factor: 0.9
• Warranty 12 yr / 5 yr / 1 yr

• 10,300 BTU (minimum)
  160,000 BTU (maximum)
• Indoor Only

RUCS75iP

Enjoy an endless supply of hot water with the RUCS75iP, our Super-High Efficiency condensing propane fueled tankless water heater from Rinnai. Only the size of a small suitcase, the RUCS75iP is compact, easy-to-install and perfect for indoor locations.

• Energy Factor: 0.93
  Uniform Energy Factor: 0.9
• Warranty 12 yr / 5 yr / 1 yr

• 10,300 BTU (minimum)
  160,000 BTU (maximum)
• Indoor Only

RUCS75iP

Enjoy an endless supply of hot water with the RUCS75iP, our Super-High Efficiency condensing propane fueled tankless water heater from Rinnai. Only the size of a small suitcase, the RUCS75iP is compact, easy-to-install and perfect for indoor locations.

• Energy Factor: 0.93
  Uniform Energy Factor: 0.9
• Warranty 12 yr / 5 yr / 1 yr

• 10,300 BTU (minimum)
  160,000 BTU (maximum)
• Indoor Only

RUCS75iP

Enjoy an endless supply of hot water with the RUCS75iP, our Super-High Efficiency condensing propane fueled tankless water heater from Rinnai. Only the size of a small suitcase, the RUCS75iP is compact, easy-to-install and perfect for indoor locations.

• Energy Factor: 0.93
  Uniform Energy Factor: 0.9
• Warranty 12 yr / 5 yr / 1 yr

• 10,300 BTU (minimum)
  160,000 BTU (maximum)
• Indoor Only