Navien NHB-150H Condensing Heating Boiler
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 43.9 cm wide by 60.5 cm high and 32.5 cm deep, weighing 36.29 kg. 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 5.1 cm or 7.6 cm PVC, CPVC, polypropylene, and special gas vent piping
- Maximum vent length: 5.1 cm up to 1981.2 cm, 7.6 cm up to 4572 cm
- Compact wall-hung design: 43.9 cm W x 60.5 cm H x 32.5 cm D; 36.29 kg
- 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
ZCS
Most orders ship within 1-3 business days.
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New and factory-reconditioned items are covered. See product details for warranty length.
Orders are processed within 1-3 business days. Large equipment ships via freight with delivery scheduled by appointment. See our Shipping Policy for details.
Most items can be returned within 30 days of delivery for a full refund, less original shipping costs. See our Refund Policy for full details.
Factory-reconditioned items are inspected and serviced by the manufacturer to meet original performance specifications, and are covered by warranty. Check this product's title and description to confirm its condition.
Yes. Manufacturer warranty terms apply as noted on this product page. Contact us if you need help with a warranty claim.
Have a question about fit, specs, or which model is right for you? Contact us and we'll help you decide.
Customer reviews
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Does the job, nothing special
Mixed feelings on this one honestly. The instructions could have been clearer, we had to look up a tutorial online. Still, it gets the job done for now.
Had issues out of the box
Unfortunately this boiler hasn't held up the way I hoped. It started making a strange noise within the first month and support has been slow to help. Considering returning it if things don't improve.
Exactly what we needed
My old boiler finally gave up, so I replaced it with this one and the difference is night and day. Performance-wise it handles everything we throw at it without breaking a sweat.
Great addition to the household setup
I was skeptical about the listed spec rating but it turned out to be more than enough for our needs. It looks great in our kitchen and several guests have asked where we got it.