
NHB-150H - Condensing Heating Boiler - 150,000 BTU
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
ZCS
Pairs well with
In stock! Ships within 1-2 business days.
90-day risk-free trial
2-Year Warranty
Complimentary shipping & returns

NHB-150H - Condensing Heating Boiler - 150,000 BTU
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
-
Shipping Information
Use this text to answer questions in as much detail as possible for your customers.
-
Customer Support
Use this text to answer questions in as much detail as possible for your customers.
-
FAQ’s
Use this text to answer questions in as much detail as possible for your customers.
-
Contact Us
Use this text to answer questions in as much detail as possible for your customers.

Shop With Confidence
Free UK delivery, easy returns, and a support team that actually answers. We stand behind every product we sell — if something's not right, we'll make it right.
Free shipping and returns
FAQs
Please read our FAQs page to find out more.
Do you offer free shipping?
Yes! All orders on Appliware.shop come with free shipping — no minimum spend required. We'll send you a tracking number as soon as your order ships so you can follow it every step of the way.
What is your return policy?
We offer a 30-day free return policy. If you're not fully satisfied with your purchase, simply contact us within 30 days of delivery and we'll arrange a free return — no questions asked.
How long will it take to receive my order?
Once your order is placed, we process it quickly and ship it out via our trusted carriers. Delivery times vary depending on your location, but you'll receive tracking details right away so you always know where your package is.
Frequently asked question
Use this text to answer questions in as much detail as possible for your customers.
What if my item arrives damaged or faulty?
If your item arrives damaged or isn't working as expected, reach out to our support team right away. Since returns are free within 30 days, we'll help you get a replacement or full refund with minimal hassle.
