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Rinnai RUS75EN Ultra Series Tankless Water Heater, White

by Rinnai
Save $ 167.64
Original price $ 1,189.95
Current price $ 1,022.31
See more Rinnai tankless water heaters on their brand page

Rinnai Ultra Series Tankless Water Heaters deliver innovation and technological leadership in condensing tankless water heating design, while providing homeowners with an endless supply of hot water, energy savings, a space-saving design and environmental benefits. The NEW RUS75e at 160,000 BTUs, available in natural gas and propane, offers condensing technology with mid-range capacity at attractive price points. As the only manufacturer to offer both concentric and PVC/CPVC dual pipe venting options on the same unit, the RUS models join the Ultra Series lineup of innovative designs and enduring values.

These new Rinnai RUCS/RUS Condensing Tankless Water Heaters expand Rinnai's Ultra Series condensing lineup to 6 models, in both indoor and outdoor versions, ranging from 130,000 to 199,000 BTU with efficiency from .93 EF to .96 EF, providing the most complete condensing lineup in the industry.

  • ENERGY STAR® Qualified - Energy Factor up to .93
  • The RUS75e, with a maximum of 160,000 BTU, is capable of delivering 7.5 GPM of continuous hot water
  • Built-in status monitor; easily upgradable to MC-91-2 controller for remote operation
  • Temperature Range of 120°F - 140°F, with four convenient pre-set temperatures
  • Stylish white cabinet and matching cover panel
  • Quiet Operation: RUS75 @ 55dB
  • High Altitude Approved up to 5,400 feet
  • Ultra Low NOx Compliant
  • Built-in freeze protection down to -22°F for indoor models and -4°F for outdoor models (gas/electricity required)
  • Mobile Home Certified
  • Fuel conversion kits available
  • ******Isolation valves sold separately********


Jomar Tankless Water Heater Valves 810-504G


The Rinnai RUS75eN requires isolation valves during installation. This valve kit includes hot and cold water shut-off valves, hot and cold water drain valves, and an ANSI approved pressure relief valve. Use of these valves will allow flushing of the heat exchanger and aid in servicing and troubleshooting of your Rinnai. You can purchase them with your water heater above or separately.

Dimensions Width: 18.5 inches (469.9 mm)
Height: 26 inches (660.4 mm)
Depth: 10 inches (254 mm)
Weight 57.3 lbs (26 kg)
Installation Type Outdoor
Minimum/Maximum BTU 10,300 / 160,000 Natural Gas
Energy Factor 0.93 for Natural Gas
Temperature Range Residential Only: 120°F - 140°F (49°C - 60°C)
Minimum Activation Rate 0.4 gpm (1.5 lpm)
Flow Rate (70° / 50° Temperature Rise) 4.2 / 5.9 gpm (15.9 / 22.3 lpm)
Hot Water Flow Rate Range 0.26 - 7.5 gpm (0.98 - 28.4 lpm)
Controllers Standard: Status Monitor
Optional: MC-91-2US
Ultra Low NOx Yes
Warranty (Residential)* Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor
Warranty (Commercial)* Residential only
Mobile Home Certified Yes
Valves Shipped in Box No
High Altitude Approved Up to 5,400 ft. (1,646 m)
Certifications AHRI, CSA, Energy Star®
Venting Options N/A
Tankless Rack System (TRS/TRW) Compatible No
1/2" Gas Line Compatible*** Yes

Ultra Series (RU) | Value Series (V65) | Luxury Series (RL)


FTC Energy Guide