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Noritz America NCC1991-DV-NG Direct 199,900 Btu Commercial Condensing Indoor Vent


Noritz America NCC1991-DV-NG Direct 199,900 Btu Commercial Condensing Indoor Vent

Noritz's most efficient commercial tankless heaters, the next generation in tankless technology - condensing heaters. NCC1991 is the new LowNOx version of NCC1991. This innovation utilizes a dual heat exchanger, a fusion of stainless steel and copper heat exchangers. The 100% stainless steel component captures the residual heat from the exhaust temperature to preheat the incoming water before it runs through the main copper heat exchanger. This results in dramatic reduction of carbon dioxide and increases the heater's efficiency level to over 93%! Another benefit of this technology is lower exhaust temperatures, which means less costly PVC can be used for its venting.

ATTENTION!!! 3" or 4" PVC venting can only be used on condensing heaters.


  • Keypad/Thermostat Display included
  • Compatible remote controller (part # RC-9018M)
  • Isolator Valve (part # IK-WV-200-1-XX)
  • Freeze Protection included
  • Pipe Cover (part # PC-3S-SUS)
  • High Elevation Adjustment included
  • Quick-Connect Cord (part # QC-2)
  • System Controller (part # SC-301[-6M, -12M])
  • Remote Controller Cord included
  • Compatible Remote Controller Cord (part # RC-CORD10)
  • Power Cord included


  • Max: 199,900 btuh
  • Min: 11,000 btuh
  • Indoor/Outdoor
  • Recirculation compatible
  • Multi-system up to 24 units


Warranty Information

Parts Warranty: 5 years
Heat Exchanger Warranty: 5 years
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Product Reviews

  1. Hot Water Miracle 5 Star Review

    Posted by on 25th Nov 2016

    Reduced water cost 25%. Reduved gas cost 27%.

  2. Excellent 5 Star Review

    Posted by on 1st Oct 2014

    Great product. I used three of these for our motel. These guys have the lowest pricing.