Navien NHB-110 High Efficiency Condensing Heating Boiler 110MBTU

In stock

NHB-110 premium features and benefits


  • 2″ venting up to 65′; 3” up to 150’ (including schedule 40 PVC).
  • The condensing technology of the dual stainless steel heat exchangers saves energy and reduces greenhouse gasses.
  • The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.
  • NHB integrated control provides industry-leading options and features including adjustable heat capacity, temp boost for outdoor reset control, adjustable anti-cycle timer, and freeze protection.

  • Super condensing efficiency
  • Dual stainless steel heat exchangers
  • SCH40, 2″ PVC venting up to 60′
  • ½” Gas pipe up to 40′
  • TDR up to 11:1
  • Integrated controls
  • PLEASE NOTE: In order to purchase this product, we would need assurance this product will be installed by a Licensed Technician for safety purposes. Details would be required before shipping to make sure the Technician/Company is registered to install this Product. Thanks for your cooperation.


Contact Us for Price at 289-999-2334 or



Dimensions17.0″ W x 24.0″ H x 13.0″ D (43.2cm W x 61.0cm H x 33.0cm D)
Boiler weight80 lbs (36.3 kg)
Installation typeIndoor wall-hung
Venting typeForced draft direct vent
IgnitionElectronic ignition
Natural gas supply pressure (from source)3.5 ” WC to 10.5 ” WC
Propane gas supply pressure (from source)8 ” WC to 13 ” WC
Natural gas manifold pressure-0.1 ” WC
Propage gas manifold pressure-0.09 ” WC
Connection sizesGas inlet3/4″ NPT (hembra)
Power supplyMain supply120V AC, 60Hz
Maximum power consumptionLess than 10A
MaterialsCasingCold rolled carbon steel
Heat exchangersPrimary and secondary heat exchangers: stainless steel
VentingExhaust2″ or 3″ PVC, CPVC, approved polypropylene (see installation manual for more details) 2″ or 3″ special gas vent type BH (Class III, A/B/C)
Intake2″ or 3″ PVC, CPVC, polypropylene 2″ or 3″ special gas vent type BH (Class III, A/B/C)
Vent clearances0″ to combustibles
Safety DevicesFlame rod, APS, gas valve operation detector, ignition operation detector, water temperature high limit switch, exhaust temperature high limit sensor
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