NCB-250/150H - Condensing Combi-Boiler - 250,000 BTU DHW / 210,000 BTU HTG
NCB-250/150H - Condensing Combi-Boiler - 250,000 BTU DHW / 210,000 BTU HTG

Vendor:bakons

NCB-250/150H - Condensing Combi-Boiler - 250,000 BTU DHW / 210,000 BTU HTG

$1,663.13

Navien NCB-250/150H - Condensing Combi-Boiler - 250,000 BTU DHW / 210,000 BTU HTG

The Navien NCB-250/150H is a 95% AFUE condensing combi-boiler that combines powerful space heating and on-demand domestic hot water in a single wall-hung unit. With a maximum input of 150,000 BTU/hr and a net AHRI rating of 120,000 BTU/hr, this unit delivers efficient performance for larger residential applications. It offers a 11.1:1 turndown ratio for heating and a 15:1 ratio for hot water, providing responsive modulation based on system demand.

The NCB-250/150H is field convertible from natural gas to propane and supports a range of venting materials including PVC, CPVC, polypropylene, and stainless steel. It also features compatibility with Navien’s NaviLink smart home controller for remote access and monitoring.

Features:

  • 95% AFUE high-efficiency rating
  • 150,000 BTU/hr heating input
  • 120,000 BTU/hr net AHRI rating
  • 11.1:1 turndown ratio for space heating
  • 15:1 turndown ratio for domestic hot water
  • Field convertible between natural gas and propane
  • Smart controls with NaviLink compatibility
  • Energy Star certified
  • Compact wall-mounted design
  • Compatible with 2" or 3" venting (PVC, CPVC, polypropylene, stainless steel)

Applications:

  • Whole-home space heating and domestic hot water
  • Medium to large residential homes
  • Indoor installations with venting flexibility
  • Natural gas or propane systems
  • Retrofits and new construction
  • Smart home integration with NaviLink controller

 

Aim high with Navien...

High efficiency, High output, High performance, all in one compact combi

  • Highest DHW maximum BTU’s in residential combi-boilers...up to 210,000 per hour
  • Highest DHW flow rate @ 70°F rise...up to 5.4 GPM
  • Highest number of BTU sizes for the North American residential combi-boiler market
  • Highest residential combi DHW TDR...15:1 for all models
  • Highest residential combi heating TDR... up to 11:1
  • Highest number of built-in zone controls for valves or pumps... up to three
  • Highest full lineup 2" PVC venting lengths... up to 65 feet
  • Highest number of cascade capable units with NPE tankless water heaters... up to 15
  • High altitude certification... up to 10,100 feet (NG or LP)
  • Lowest minimum fire BTU for residential combi-boilers... as low as 10,700

New Navien NCB-H...the complete combi package and no comprimises

Navien's innovation and technological advancements have done it again. The new NCB-H is taking combi performance to the highest levels. As the competition tries to get closer, Navien ingenuity keeps advancing their lead.

Navien NCB-H Full House

COMPARE these advantages and see why NCB-H combis are the right fit for small and large homes

Dual stainless steel heat exchangers for heating
Dual stainless steel heat exchangers for heating

Durable stainless steel heat exchangers resist corrosion, resulting in longer life and improved heat recovery from flue gases for superior efficiency.

Separate stainless steel flat plate
Up to 5.4 GPM @ 70°F temperature rise for DHW

Separate stainless steel flat plate heat exchanger for DHW creates the lightest flow rates for any combi-boiler in the industry.

Dual Venturi System
Dual Venturi and field gas convertibility

Dual Venturi system creates better combustion control and turndown ratio. Orifice conversion kit for easy field gas convertibility from NG to LP is included with every NCB-H Series combi-boiler.

DHW Module
Easy access to DHW module and valves

All components of DHW module including water feed valve, flow adjustment valve, mixing valve and 3-way valve are right behind circuit board for easy serviceability.

Low Noise Levels
Low noise levels

Installations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NCB-H combi-boilers.

Gas Flow Control System
TDR 15:1 for DHW and up to 11:1 for heating

The sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.

 

Dual Stainless Steel

Heat Exchanger

Designed for exceptional

heating performance and longevity

Heating up to

150,000

BTUs per hour

 Dual Stainless Steel Heat Exchanger

 

Built-in DHW module now with
higher performance
Navien’s NCB-H generates enough hot water to run up to 3 showers and a dishwasher at the same time.

NCB-H Module

DHW up to 210,000 BTUs per hour

 

Expanded DHW Capability

For increased domestic hot water flow demand, the NCB-H can be cascaded and common vented with up to 15 NPE tankless water heaters

Cascading DHW Capabilities

 

ZCS

Pickup available at Rahlstedter Weg

Usually ready in 24 hours

Pairs well with

In stock! Ships within 1-2 business days.

90-day risk-free trial

2-Year Warranty

Complimentary shipping & returns