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Rinnai Sensei CU199eP Outdoor Propane Commercial Condensing Tankless Water Heater

by Rinnai
Sold out
Original price $ 2,200.00
Current price $ 1,909.50

See more Rinnai tankless water heaters on their brand page

Replaces model C199ep.

With an enhanced combustion design, the Rinnai SENSEI Tankless Water Heater provides a better experience for both users and installers. Like all Rinnai Tankless Water Heaters, it's also vertically integrated. That means all key components are manufactured by Rinnai — to ensure Rinnai quality.

Condensing Technology for Colder Climates

The Rinnai SENSEI offers freeze protection down to -4o F (for outdoor units) or -22o F (for indoor units) through:

  • NEW integrated check valve that prevents backflow from outside cold air
  • NEW Fiber Mesh Premix Burner
  • Integrated logic to temporarily activate the unit in extreme cold climates

Most Flexible Venting in the Industry

The Rinnai® Sensei™ can go in an old condensing vent system for replacement if needed, but new installs can use smaller, lighter, less expensive concentric venting.

Now Including 2" Venting Options


Dimensions Product Width (inches): 14.76
Product Height (inches): 33.86
Product Depth (inches): 22.05
Mobile Home Certified Yes
Product Weight (lbs)


Wi-Fi Capable Yes
Energy Star Certified Yes
Circ-Logic Compatible (S/N - Production Date) Yes
Recirculation Capable Yes
Recirculation Pump


Cold Water Inlet Connection 3/4" MNPT/19mm
Domestic Hot Water Temperature Range (Standard) (°F/°C) 98F-120F / 37C-49C
Domestic Hot Water Temperature Range (Optional) (°F/°C) 98F-185F / 37C-85C
Gas Supply Connection 3/4" MNPT/19mm
Gas Type
Hot Water Outlet Connection 3/4" MNPT/19mm
Isolation Valves Included Yes
Manufacturer Model Number REU-N3237WC-US-P
Maximum BTU 199,000 BTU/h
Minimum BTU

15,000 BTU/h

Maximum Altitude 10,200'
NOx Level Less Than 14Ng/J (20ppm)
Commercial Warranty (Years) Heat Exchanger: 8, Labor: 1, Parts: 5
Residential Warranty (Years) Heat Exchanger: 15, Labor: 1, Parts: 5

Installation and Operation Manual | Specification Sheet