Noritz NR66-OD-NG 6.6 Gallons Per Minute Outdoor Natural Gas On Demand Tankless Water Heater

- Item #: BCI1999895

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This product has additional required/recommended options. To configure, add to your cart.

  • Hard Water Treatment Recommended
  • Covers Recommended

NR66 Collection 6.6 Gallons Per Minute Outdoor

(Item doesn't ship to California due to Low Nox regulations)

The NR66-OD-NG is the perfect small residential, apartment and condominium hot water solution. Ideal for applications with up to 2 showers, this outdoor model requires no added venting costs and its durable polyester coated steel casing helps it endure the elements and look great. This natural gas tankless water heater comes with a fully modulating dual flame burner, safety lock-out, and automatic air regulator in place to make certain that you not only have sufficient hot water but that it's temperature is always just the way you like it.

Tankless Water Heater: A major improvement to the standard tank style water heaters, the NR66 series tankless water heater packs a lot of power in a small package. The compact and efficient Noritz NR66 saves space, energy and water while delivering endless hot water for small residential applications. All of this functionality and efficiency are seamlessly controlled by a self-diagnostic computer system, ensuring the safety of your home and that there is always perfect non-varying hot water for you to enjoy


  • Natural gas tankless hot water heater
  • High performance single flame burner
  • Thermal efficiency: 83%
  • Turbo flow: Up to 6.6 GPM @ 35 degree Fahrenheit temperature rise
  • Resin coated PC board for protection and durability
  • Automatic air regulator maximizes efficiency
  • Overheat and freeze protection systems installed
  • Includes anchoring screws and optional freeze protection

Introducing the latest advancements in tankless water heater technology for your home, Noritz tankless hot water heaters are both eco-friendly and energy efficient, providing savings up to 40% in utility costs. Their gas water heaters warm water on demand, which means you'll always have hot water and it will never run out.

Additional Noritz Links

Our SKU: Noritz NR66-OD-NG

This product is listed under the following manufacturer number(s):

  • Noritz NR66-OD-NG
    Natural Gas

*Denotes a finish or option that has been discontinued

Noritz NR66-OD-NG Product Specifications

Owners Manual
Installation Sheet
Product Catalog
Specification Sheet
CSA Approved Yes
Collection NR66
Configuration Tankless Water Heater
Default Temperature 120
Depth 6.7
Direct Vent No
Energy Factor .83
Energy Star Yes
Fuel Type Natural Gas
Function Non-Condensing
GPM 5.3
Gas Connection 3/4"
Height 20.5
Ignition Type Electronic
Indoor Installation No
Low Lead Compliant Yes
Maximum Gas Input 140000
Natural Gas Pressure (Max) 10.5
Natural Gas Pressure (Min) 4
Natural Gas Thermal Efficiency 83%
Outdoor Installation No
Product Weight 36
Temperature (Max) 150
Temperature (Min) 100
UL Listed No
Voltage 120
Water Connection 3/4"
Water Pressure (Max) 150
Water Pressure (Min) 15
Width 13.8

Installation Resource Center

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