Navien NCB300-28K 28kW Combi Boiler Compact Hydrogen Ready with Stainless Steel Heat Exchangers
Navien NCB300-28K 28kW Combi Boiler offers hydrogen-ready performance, compact space-saving design, and quiet 52 dB operation—engineered for modern, high-efficiency heating.
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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 NCB300-28K 28kW Combi Boiler is engineered to meet the demands of modern homes seeking efficient heating and hot water. With its compact footprint and lightweight build, it fits effortlessly into smaller spaces without compromising performance.
Equipped with stainless steel heat exchangers, this boiler offers enhanced durability and long-term energy efficiency. It is hydrogen-ready for up to 20% blends, ensuring compliance with future green energy standards.
Delivering a DHW output of 28 kW and a flow rate of 11.5 l/min at 35°C rise, it provides instant hot water and consistent central heating. Operates at a low 52 dB noise level for comfort, and pairs with Navien Smart Plus thermostats to reach ErP A+ rating for energy optimization.
Ideal for both new installations and replacements, the intuitive control panel makes setup and daily operation straightforward.
Key Features
High Efficiency – Achieves ErP A+ rating when paired with Navien Smart Plus thermostats
Durability – Stainless steel heat exchangers offer corrosion resistance and extended service life
Space-Saving Design – Slim, compact dimensions for flexible installation
Hydrogen Ready – Supports 20% hydrogen blend for future-proof heating
Quiet Operation – Whisper-quiet 52 dB operation for minimal household disturbance
User-Friendly Controls – Intuitive display panel for easy setup and performance monitoring
Applications
Compact Homes – Perfect fit for properties with restricted installation space
New Installations – Ideal for modern builds requiring energy-efficient systems
Boiler Replacements – Upgrades outdated systems with quiet, efficient performance
Technical Specifications:
| Feature | Details |
|---|---|
| Product Name | Navien NCB300-28K 28kW Combi Boiler |
| Model Number | PNCB3000028L001 |
| Fuel Type | Natural Gas / LPG |
| Heat Output (CH) | 24 kW |
| DHW Output | 28 kW |
| DHW Flow Rate (35°C Rise) | 11.5 l/min |
| CH Condensing Max Output | 25.6 kW |
| ERP Rating | A (A+ with Smart Plus thermostat) |
| SEDBUK SAP 2009 Rating | 88.9% |
| Noise Level | 52 dB |
| Max Vertical Flue | 8 meters |
| Max Horizontal Flue | 7 meters |
| NOx Class | 6 |
| Warranty | 5 Years |
| Solar Compatible | Yes |
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