Navien NHB-H Series 110 MBH - High Efficiency Condensing - Heating Boiler
The Navien NHB-H Series is a wall-hung, high-efficiency condensing boiler designed for residential and light commercial hydronic heating. The 110 MBH model (NHB-110H) delivers reliable performance with up to 95% AFUE efficiency, compact design, and advanced controls. It is especially popular for radiant floor heating, baseboard systems, and snow melt applications.
🔹 Key Features
High Efficiency
-
95% AFUE efficiency rating.
-
ENERGY STAR® certified.
-
Significant reduction in energy bills compared to cast-iron or older non-condensing boilers.
Dual Heat Exchanger System
-
Stainless Steel Heat Exchanger – Corrosion-resistant, lightweight, and durable.
-
Allows efficient condensing operation for maximum heat extraction.
Compact, Wall-Hung Design
-
Saves valuable floor space compared to traditional boilers.
-
Lightweight and easy to install in tight spaces like closets or mechanical rooms.
Advanced Controls
-
NaviLinkâ„¢ Wi-Fi remote system compatible (optional).
-
Built-in control panel with diagnostics, multiple pump control, and outdoor reset capability.
Flexible Applications
-
Supports multiple zones with add-on controllers.
-
Ideal for radiant floor, hydronic baseboard, panel radiators, fan coils, and indirect water heaters.
Venting Options
-
Up to 150 ft vent length with 2″ PVC, CPVC, or polypropylene.
-
Concentric venting available.
Quiet Operation
-
Low-noise combustion system suitable for indoor living spaces.
🔹 Technical Specifications (NHB-110H)
| Feature | Value |
|---|---|
| Model | NHB-110H |
| Input Capacity | 110,000 BTU/hr |
| AFUE | 95% |
| DOE Heating Capacity | ~103,000 BTU/hr |
| Net I=B=R Rating | ~90,000 BTU/hr |
| Heat Exchanger | Stainless steel |
| Fuel | Natural Gas or Propane (field convertible) |
| Ignition | Electronic ignition |
| Turndown Ratio | 15:1 (modulates output to match demand) |
| Venting | 2″ or 3″ PVC/CPVC/PP, up to 150 ft |
| Dimensions | ~28″ H × 17″ W × 13″ D |
| Weight | ~77 lbs |
| Warranty | 15 years (heat exchanger), 5 years (parts), 1 year (labor) – residential |
🔹 Benefits
-
Ultra-high efficiency saves homeowners significantly on energy costs.
-
Compact wall-mount design frees up space.
-
Advanced turndown ratio (15:1) ensures efficiency even at low demand.
-
Flexibility for a wide range of hydronic heating applications.
-
Durable stainless steel heat exchanger provides long service life.
🔹 Considerations
-
Requires condensate drainage due to condensing design.
-
Higher upfront cost compared to non-condensing boilers, but offset by rebates and long-term fuel savings.
-
Best suited for systems designed with low-return water temperatures to maximize condensing efficiency.
✅ Summary
The Navien NHB-H 110 MBH High Efficiency Condensing Boiler is a top choice for modern hydronic heating. With 95% AFUE, a stainless steel heat exchanger, 15:1 turndown ratio, and wall-hung design, it provides space-saving installation, long-term reliability, and excellent efficiency. Perfect for medium-sized homes with baseboard, radiant floor, or panel radiator systems.
Choose options