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NHB-150H – Condensing Heating Boiler – 150,000 BTU
NHB-150H – Condensing Heating Boiler – 150,000 BTU
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Navien NHB-150H150,000 BTU Condensing Heating Boiler
A high-efficiency condensing wall-hung boiler designed for indoor residential and light commercial heating. Delivers up to 95% AFUE with a 15:1 turndown ratio, providing precise temperature control and energy savings.
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. The NHB-150H is field convertible for use with natural gas or propane, meeting diverse installation needs.
Technical specification
| Type | Condensing heating boiler (heating-only) |
|---|---|
| Input | 150,000 BTU |
| Efficiency | Up to 95% AFUE |
| Turndown ratio | 15:1 |
| Heat exchangers | Stainless steel primary and secondary |
| Ignition | Electronic ignition system |
| Zone control | Built-in 3-zone controller for zone valves or pumps |
| Venting | 2″ or 3″ PVC, CPVC, polypropylene or special gas vent piping; forced draft direct venting |
| Max vent length | 2″ up to 65 ft, 3″ up to 150 ft |
| Dimensions | 17.3″ W × 23.8″ H × 12.8″ D |
| Weight | 80 lbs |
| Controls | Backlit interface, click-wheel, Setup Wizard |
| Fuel | Field convertible — natural gas or propane |
| Safety devices | Flame rod, air proving switch, gas valve and ignition detectors, high limit switches, vent installation detector |
| Clearance | Zero clearance to combustibles |
| Certifications | ENERGY STAR, CSA B149.1, ASME H, ANSI Z223.1 |
Applications
Residential & Light Commercial
Space heating for homes and small commercial spaces.
Multi-Zone Hydronic
Multi-zone hydronic heating systems.
Compact Wall-Mounted
Installations requiring compact, wall-mounted boilers.
Retrofit & New Construction
Retrofits and new construction projects.
Flexible Fuel & Venting
Systems needing flexible venting and fuel options.
Key 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 × 23.8″ H × 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
Navien NHB-150H boiler. Follow the installation manual, local gas and plumbing codes, and manufacturer instructions.
