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High Efficiency Systems


NCB Series High Effiency Wall-Hung Combi

Navien NCB is the first high efficiency tankless condensing combination boiler with the capacity to supply both heat and domestic hot water for larger homes - enough hydronic heat for a whole house, plus hot water to run two showers and a dishwasher all at the same time.

  • Duel inputs: Up to 120 MBtuh for heating and 199 MBtuh for DHW
  • 4.5 GPM at 77 degree temperature rise for domestic hot water
  • Turn-down ratio of 6:1 for heat and 11:1 for DHW
  • Dual stainless steel heat exchangers
  • Field gas convertibility for NG to LPG
  • PVC Venting: up to 60 Ft. with 2 in. or 150 Ft with 3 in.
  • Uses existing 1/2 gas line
  • Linkable with our NPE units for high DHW capacity
MODELInput MBtuHOutput MBtuHAFUEDimensions
HxWxD
Water Content
Gal.
Weight
Lbs.
HEAT INPUT MBTUHDHW GPM @ 77DT
NCB-18014.0 74.0 93.5 28.8x17.3x12 0.00 74 14.0-80.03.4
NCB-21018.0 92.0 93.6 28.8x17.3x12 0.00 84 18.0-100.04.0
NCB-24018.0 109.0 93.2 28.8x17.3x12 0.00 84 18.0-120.04.5

Warranty Information

  • Heat Exchanger for 120 months -
  • All Parts for 60 months -
  • Limited Labor for 12 months -

Available Documents

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Lakewood, CO 80214
720-934-8711
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