Home Size Southern climate: 4-5 bathrooms
Northern climate: 2-3 bathrooms
Indoor Unit Dimensions 24.2” (H) x 18.3” (W) x 9.4”(D)
Outdoor Unit Dimensions 24.2” (H) x 18.3” (W) x 9.4”(D)
Weight 62 lbs.
Gas Consumption
(NG & LP)
Max. 250,000 btuh - Min. 11,000 btuh
Capacity Range 0.5-11.1 Gal./min.
Energy Factor n/a
Thermal Efficiency 84%
Temperature Settings 100-150° F (in 5° F Intervals) 160, 170, 180° F
Accessories Remote Control & Cord, Anchoring Screws,
Power Cord Kit (SV model only).


For our luxury line, we have the NR111 series which can provide endless hot water for up to 4+ showers. And with its Quick-Connect system, two units can be linked together to meet the high demand of today’s luxury homes. To accommodate the higher flow rate demand, these units have a dual flame burner, a redesigned heat exchanger and 25% thicker copper piping. No other tankless water heater in its class can beat its performance, dependability, and quality. Built-in features include safety lock-out, freeze protection, and high elevation adjustment. PVC CANNOT be used for venting.

Click here for installation photos.

These units offer several innovations:
Safety lock out - Default max. 120 degrees (refer to owner's manual for higher temp)
Dual flame burner - Noritz exclusive! Minimizes temperature fluctuations.
Fully modulating - Automatically adjusts burner level accordingly.
Turbo Flow - Up to 11.1 GPM @ 35 degree temperature rise (9.3 GPM @ 45 degree rise).
Quick Connect - Doubles the output by connecting two identical heaters.
Direct ignition - No standby pilot light.
Thermal fuse - Automatic overheat protection system.
Resin coated PC board - Increases durability and protection from elements.
Automatic air regulator - Monitors internal temperature/maximizes burner efficiency.
Fully modulating - Automatically adjusts burner level accordingly.
Commercial grade heat exchanger - 25% thicker piping than our competition.

Natural Gas (NG) Propane (LP)
NR111-SV Indoor/Outdoor 12yr/5yr parts/1yr labor NA* NA*
NR111-DV Indoor 12yr/5yr parts/1yr labor NA* NA*
NR111-OD Outdoor 12yr/5yr parts/1yr labor NA* NA*

*The US Department of Energy considers any water heater that is 200,000 BTU/h or greater to be a “commercial” water heater, and therefore does not allow such products to be rated with an Energy Factor, which is based on residential usage.


  • Isolation valves (#IK-WV-200-1-TH or #IK-WV-200-1-SW)
  • Outdoor vent cap (#VC-4-1) forNR111-SV model only.
  • Pipe cover (#PC-3S)
  • Remote controller outdoor junction box (#0700757)
  • ScaleShield (#SS-HB-2)
  • Quick-connect cable (#QC-1)
  • Recess box (#RB-900) for NR111-OD model only.
  • H2FLOW Anti-Scale System (#H2F)