Navien NCB300-41K 41kW Combi Boiler Compact Hydrogen Ready with Stainless Steel Heat Exchangers
Navien NCB300-41K 41kW Combi Boiler offers hydrogen-ready operation, compact high-output performance, and quiet 47 dBA noise level—ideal for modern, energy-efficient homes.
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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 NCB300-41K 41kW Combi Boiler is crafted to meet the demands of larger homes or high hot water usage environments while maintaining compact dimensions for easy installation. Its 680 × 395 × 283mm frame makes it suitable even for space-conscious installations.
Fitted with durable stainless steel heat exchangers, this combi boiler ensures long-lasting efficiency and performance. Designed with hydrogen-ready technology, it supports up to a 20% hydrogen blend, helping future-proof your heating system.
Its compatibility with the Navien Smart Service Toolkit allows for simplified maintenance and monitoring, and when paired with Smart Plus thermostats, it achieves an ErP A+ rating for optimal energy efficiency. Operating at just 47 dBA, it provides silent comfort throughout the home.
Key Features
Stainless Steel Heat Exchangers – Deliver high durability and sustained heating performance
Hydrogen Ready – Supports 20% hydrogen mix for energy transition readiness
ErP A+ Efficiency – Achievable with Smart Plus thermostats for reduced energy costs
Compact Design – 680mm (H) × 395mm (W) × 283mm (D), perfect for limited-space installations
Quiet Operation – Operates at 47 dBA for minimal household disruption
Smart Service Compatibility – Works with Navien’s Smart Service Toolkit for easy maintenance
Applications
Large or Multi-Bathroom Homes – Supports high demand for hot water
Energy Efficient Installations – Meets modern standards with compact, high-output performance
Professional Heating Systems – Ideal for installers looking for flexibility and future-ready features
Technical Specifications:
| Feature | Details |
|---|---|
| Product Name | Navien NCB300-41K 41kW Combi Boiler |
| Model Number | PNCB3000041L001 |
| Fuel Type | Natural Gas / LPG |
| Heat Output (CH) | 26 kW |
| DHW Output (Min/Max) | 4.6 / 41.0 kW |
| DHW Flow Rate (35°C Rise) | 16.8 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 |
| Solar Compatible | Yes |
| Warranty | 5 Years |
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