Navien NCB500 24kW Gas System Boiler
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Navien NCB500 24kW Gas System Boiler
(Approx. 3-5 working days)


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The Navien NCB500-24kW is a wall-mounted condensing system boiler designed for medium-sized homes with higher heating and hot water demands. It works with a separate hot water cylinder to provide stored hot water efficiently.
This model offers a central heating output of 24kW and features a stainless steel heat exchanger for durability. It achieves ErP A-rated efficiency up to 94% and meets NOx Class 6 standards for low emissions. Built-in Wi-Fi connectivity allows smart control and energy monitoring through the Navien Smart Plus App.
With compact dimensions of 680 × 395 × 283 mm, the NCB500-24kW is suitable for cupboard installation. It is hydrogen-ready for a 20% blend and includes frost protection for reliable operation in colder environments.
- 24kW central heating output for medium homes
- Stainless steel heat exchanger for corrosion resistance
- Built-in Wi-Fi for smart control
- Compact size: 680 × 395 × 283 mm
- Hydrogen-ready for 20% blend
| Brand | Navien |
|---|---|
| Width | 395 mm |
| Depth | 283 mm |
| Flue Included | No |
| Fuel Type | Gas |
| Heating Energy Rating | A |
| Heating Type | Condensing |
| Height | 680 mm |
| Max Heat Input | 24.7 kW |
| Central Heating Output | 24 kW |
| Min Heat Input | 4.3 |
| Min Heat Output | 4.2 |
| Model Name / No | NCB500-24k |
| Weight | 29 kg |
| Usage | Internal Use |
| Length Of Warranty | 10 Years |
| Mount Type | Wall Mounted |
- Delivery cost will be calculated at checkout once delivery address has been confirmed
- Delivery lead times are an estimate only
- Delivery drivers will always prioritise safety over convenience when offloading materials
- Bagged products such as cement and plaster cannot be returned once opened
- Jumbo bags cannot be returned once delivered
- All other goods may be returned within 3 months with a proof of purchase provided
- Chargeable pallets may be returned for a full refund
- All online pricing is specific to Northern Ireland only. Pricing for our Isle of Man branch may vary.
The Navien NCB500-24kW is a wall-mounted condensing system boiler designed for medium-sized homes with higher heating and hot water demands. It works with a separate hot water cylinder to provide stored hot water efficiently.
This model offers a central heating output of 24kW and features a stainless steel heat exchanger for durability. It achieves ErP A-rated efficiency up to 94% and meets NOx Class 6 standards for low emissions. Built-in Wi-Fi connectivity allows smart control and energy monitoring through the Navien Smart Plus App.
With compact dimensions of 680 × 395 × 283 mm, the NCB500-24kW is suitable for cupboard installation. It is hydrogen-ready for a 20% blend and includes frost protection for reliable operation in colder environments.
- 24kW central heating output for medium homes
- Stainless steel heat exchanger for corrosion resistance
- Built-in Wi-Fi for smart control
- Compact size: 680 × 395 × 283 mm
- Hydrogen-ready for 20% blend
| Brand | Navien |
|---|---|
| Width | 395 mm |
| Depth | 283 mm |
| Flue Included | No |
| Fuel Type | Gas |
| Heating Energy Rating | A |
| Heating Type | Condensing |
| Height | 680 mm |
| Max Heat Input | 24.7 kW |
| Central Heating Output | 24 kW |
| Min Heat Input | 4.3 |
| Min Heat Output | 4.2 |
| Model Name / No | NCB500-24k |
| Weight | 29 kg |
| Usage | Internal Use |
| Length Of Warranty | 10 Years |
| Mount Type | Wall Mounted |
- Delivery cost will be calculated at checkout once delivery address has been confirmed
- Delivery lead times are an estimate only
- Delivery drivers will always prioritise safety over convenience when offloading materials
- Bagged products such as cement and plaster cannot be returned once opened
- Jumbo bags cannot be returned once delivered
- All other goods may be returned within 3 months with a proof of purchase provided
- Chargeable pallets may be returned for a full refund
- All online pricing is specific to Northern Ireland only. Pricing for our Isle of Man branch may vary.


