Navien NCB300-37K 37kW Combi Boiler Compact Hydrogen Ready with Stainless Steel Heat Exchangers
Navien NCB300-37K 37kW Combi Boiler features hydrogen-ready operation, compact size, quiet 47 dBA performance, and smart toolkit compatibility for efficient heating solutions.
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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 NCB300-37K 37kW Combi Boiler is built to deliver robust and efficient heating for modern households that require high hot water flow and low energy usage. Its compact 680 × 395 × 283mm frame allows for flexible installation even in tight spaces, without compromising power.
With stainless steel heat exchangers, this boiler is built to maintain long-term efficiency and durability. The hydrogen-ready system supports up to 20% hydrogen blend, ensuring your heating remains future-compatible.
This model supports Navien’s Smart Service Toolkit, simplifying diagnostics and ongoing maintenance. When paired with Navien Smart Plus thermostats, the unit achieves ErP A+ efficiency, lowering energy bills while maximizing performance.
Its quiet operation at just 47 dBA ensures minimal disruption, making it suitable for both residential and professional environments.
Key Features
Stainless Steel Heat Exchangers – Enhance durability and maintain energy efficiency
Hydrogen Ready – Supports 20% hydrogen blend for future energy standards
ErP A+ Efficiency – Achieved when paired with Navien Smart Plus thermostats
Compact Design – 680mm (H) × 395mm (W) × 283mm (D), fits into space-restricted areas
Low Noise Level – Quiet 47 dBA operation for undisturbed comfort
Smart Maintenance – Compatible with Navien Smart Service Toolkit for fast servicing
Applications
Modern Homes – Perfect for households with high hot water demand
Energy Upgrades – Ideal for future-proofing with hydrogen-ready capabilities
Compact Spaces – Designed for efficient heating in apartments or utility rooms
Technical Specifications:
| Feature | Details |
|---|---|
| Product Name | Navien NCB300-37K 37kW Combi Boiler |
| Model Number | PNCB3000037L001 |
| 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 thermostat) |
| SEDBUK SAP 2009 Rating | 88.9% |
| Noise Level | 47 dBA |
| Maximum Vertical Flue (100mm) | 8 meters |
| Maximum Horizontal Flue (100mm) | 7 meters |
| NOx Class | 6 |
| Warranty | 5 Years |
| Solar Compatible | Yes |
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