Name: NHB-150H – Condensing Heating Boiler – 150,000 BTU
Brand: Home Accessories
SKU: NHB-150H
Price: 1550.2 USD
Availability: InStock

Navien NHB-150H – Condensing Heating Boiler – 150,000 BTU

The Navien NHB-150H is a high-efficiency condensing wall-hung boiler designed for indoor residential and light commercial heating. It delivers up to 95% AFUE with a 15:1 turndown ratio, providing precise temperature control and energy savings. Compact and wall-mounted, it measures 17.3″ wide by 23.8″ high and 12.8″ deep, weighing 80 pounds. The boiler supports forced draft direct venting with flexible vent pipe options and lengths, allowing versatile installation.

This model includes advanced user controls and a built-in 3-zone controller to simplify multi-zone heating systems. Safety is prioritized with multiple built-in detectors and sensors, while certification to Energy Star and other standards ensures reliability. The NHB-150H is field convertible for use with natural gas or propane, meeting diverse installation needs.

Features

95% AFUE efficiency with 15:1 turndown ratio
Field convertible between natural gas and propane
Electronic ignition system
Stainless steel primary and secondary heat exchangers
Built-in 3-zone controller for zone valves or pumps
Vent compatible with 2″ or 3″ PVC, CPVC, polypropylene, and special gas vent piping
Maximum vent length: 2″ up to 65 feet, 3″ up to 150 feet
Compact wall-hung design: 17.3″ W x 23.8″ H x 12.8″ D; 80 lbs
Advanced controls with backlit interface, click-wheel, and setup wizard
Safety devices including flame rod, air proving switch, gas valve and ignition detectors, high limit switches, and vent installation detector
Zero clearance to combustibles
Certifications: Energy Star, CSA B149.1, ASME H, ANSI Z223.1

Applications

Residential and light commercial space heating
Multi-zone hydronic heating systems
Installations requiring compact, wall-mounted boilers
Retrofits and new construction
Systems needing flexible venting and fuel options

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.

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

Dual stainless steel heat exchangers for heatingDurable stainless steel heat exchangers resist corrosion, resulting in longer life and improved heat recovery from flue gases for superior efficiency.	Up to 5.4 GPM @ 70°F temperature rise for DHWSeparate stainless steel flat plate heat exchanger for DHW creates the lightest flow rates for any combi-boiler in the industry.	Dual Venturi and field gas convertibilityDual 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.
Easy access to DHW module and valvesAll 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 levelsInstallations in or near media rooms, recreation rooms or any living areas of the house are possible with the quiet running NCB-H combi-boilers.	TDR 15:1 for DHW and up to 11:1 for heatingThe sophisticated gas flow control system provides a high turndown ratio, reducing energy waste and excessive boiler cycling and enhances temperature control for DHW.