Noritz NC250-SV-ASME-NG 250,000 BTU Commercial Indoor (Standard Vent) Natural Gas On Demand Tankless Water Heater.

- Item #: BCI2025139

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  • Hard Water Treatment Recommended

NC250-ASME Collection 250,000 BTU Commercial Indoor (Standard Vent)

(Item doesn't ship to California due to Low Nox regulations-Check out NCC1991-DV-NG)

The NC250-SV-ASME-NG is a standard vent natural gas tankless water heater, ideal for commercial businesses from hair salons to housing complexes. With a sleek professional grade stainless steel exterior encapsulating the same corrosive-free stainless steel interior components, the NC250 exudes excellence. As form follows function, a lower minimum flow requirement and dual flame burner combine to enable large amounts of hot water with minimal temperature fluctuations so you can continually have access to perfect temperature water. The efficiency and functionality of the NC250 series combine to help save space, water, energy and money, all while enjoying endless hot water.

Tankless Water Heater: A major improvement to the standard tank style water heaters, the NC250 series tankless water heater packs a lot of power in a small package. The compact and efficient Noritz NC250 saves space, energy and water while delivering endless hot water for commercial grade applications. If your hot water needs expand, the quick-connect system enables multiple heaters to be connected and run by the same controller system in the same efficient and effective manner. All of this functionality and efficiency are seamlessly controlled by a self-diagnostic computer system and digital remote, making it simple enough for anyone to use and benefit from.


  • Natural gas tankless hot water heater
  • Quick-Connect 24 unit system capabilities
  • Dual flame burner to reduce temperature fluctuations
  • Thermal efficiency: 84%
  • Turbo flow: Up to 9.3 GPM @ 45 degree temperature rise
  • Safety devices include: Overheat prevention, freezing prevention, lightning protection, pressure relief valve and a thermal fuse
  • Recirculation compatible
  • PVC cannot be used for venting purposes.
  • Includes remote controller and cord, anchoring screws and power cord

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 NC250-SV-ASME-NG

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

  • Noritz NC250-SV-ASME-NG
    Natural Gas

*Denotes a finish or option that has been discontinued

Noritz NC250-SV-ASME-NG Product Specifications

Owners Manual
Installation Sheet
Product Catalog
Specification Sheet
CSA Approved Yes
Collection NC250
Configuration Tankless Water Heater
Default Temperature 120
Depth 9.4
Direct Vent No
Energy Star No
Fuel Type Natural Gas
Function Non-Condensing
GPM 9.3
Gas Connection 3/4"
Height 24.4
Ignition Type Electronic
Indoor Installation Yes
Low Lead Compliant Yes
Maximum Gas Input 250000
Natural Gas Pressure (Max) 10.5
Natural Gas Pressure (Min) 4
Natural Gas Thermal Efficiency 84%
Outdoor Installation Yes
Product Weight 62
Temperature (Max) 180
Temperature (Min) 100
UL Listed No
Voltage 120
Water Connection 3/4"
Water Pressure (Max) 150
Water Pressure (Min) 15
Width 18.4

Installation Resource Center

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