Navien NCB500 2S+/37K 37kW Combi Boiler Hydrogen Ready Compact High Flow DHW Output
Navien NCB500 2S+/37K 37kW Combi Boiler features 15.2 l/min DHW flow, hydrogen-ready tech, stainless steel exchangers, and a 10-year warranty—designed for efficient, quiet performance.
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- Estimated Delivery: For most items (over 99% of our products), orders placed before 3pm on working days will be dispatched the same day with our Fast DELIVERY 1st class service. For the rare items not immediately in stock, dispatch may take 1-3 working days after receiving your order. If your order cannot be dispatched the same day, we will notify you via email.
- For boilers: We aim to dispatch on the next working day. However, in some cases, it may take 2-3 working days to dispatch. Rest assured, we will always strive for the fastest possible turnaround.
The Navien NCB500 2S+/37K 37kW Combi Boiler is purpose-built for homes requiring high domestic hot water output, energy efficiency, and compact installation flexibility. With a slim 283mm depth, it fits easily into tight spaces or cupboards while offering exceptional functionality.
Delivering up to 15.2 litres per minute of hot water at a 35°C rise, this model ensures consistent performance during peak usage. The 6:1 turndown ratio allows precise modulation to match heating demands, helping reduce gas consumption without compromising comfort.
With a stainless steel heat exchanger and hydrogen-ready support for 20% blends, it’s built to last and ready for future energy transitions. Pairing the unit with 3 Smart Plus thermostats enables ErP A+ efficiency, maximizing energy savings.
Operating quietly at 48 dBA, and backed by a 10-year warranty, this boiler is both powerful and reliable—ideal for today’s high-demand households.
Key Features
Stainless Steel Heat Exchangers – Deliver long-term durability and heat retention
High DHW Flow Rate – Provides 15.2 l/min at 35°C rise for busy households
Turndown Ratio of 6:1 – Advanced modulation for efficient gas use
Hydrogen Ready – Supports up to 20% hydrogen for energy sustainability
ErP A+ Efficiency – When connected to Smart Plus thermostats for multizone heating
Compact Design – 680mm (H) × 395mm (W) × 283mm (D), ideal for limited-space installations
Quiet Operation – Operates at just 48 dBA for noise-free comfort
10-Year Warranty – Long-lasting protection and peace of mind
Applications
High-Demand Homes – Perfect for households with greater hot water usage
Energy-Conscious Renovations – Future-ready design for sustainability goals
Cupboard Installations – Compact depth for streamlined fitting
Technical Specifications:
| Feature | Details |
|---|---|
| Product Name | Navien NCB500 2S+/37K 37kW Combi Boiler |
| Model Number | PNCB5000037L001 |
| Fuel Type | Natural Gas / LPG |
| Heat Output (CH) | 26 kW |
| DHW Output (Min/Max) | 4.6 / 37.0 kW |
| DHW Flow Rate (35°C Rise) | 15.2 l/min |
| CH Condensing Max Output | 28.2 kW |
| ERP Rating | A (A+ with Smart Plus thermostats) |
| SEDBUK SAP 2009 Rating | 89% |
| Noise Level | 48 dBA |
| Max Vertical Flue (100mm) | 8 meters |
| Max Horizontal Flue (100mm) | 7 meters |
| NOx Class | 6 |
| Solar Compatible | Yes |
| Warranty | 10 Years |
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