Worcester Bosch Greenstar 4000 25kW Combi Gas Boiler
Worcester Bosch Greenstar 4000 25kW Combi Gas Boiler
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The Worcester Bosch Greenstar 4000 25kW is a wall mounted gas fired condensing combi boiler designed for small to medium sized properties. It provides both central heating and instantaneous hot water without the need for a separate cylinder or tank. This model is the successor to the Greenstar i-series and incorporates updated technology for improved efficiency and ease of use.
The boiler operates within a modulation range of 3kW to 24kW for heating and delivers a domestic hot water output of 25kW, supporting flow rates up to 10.2 litres per minute at a 35°C temperature rise. It is compatible with a 20% hydrogen blend and features an aluminium heat exchanger for efficient heat transfer. The unit is ErP A-rated with an efficiency of 94%, meeting current energy standards.
Key design elements include a compact size (724mm × 400mm × 310mm), Quiet Mark accreditation for low noise levels (around 45dB), and a full colour text display for straightforward control. It also offers features such as Quick Tap water saving technology, wireless connectivity with Bosch EasyControl, and integrated condensate siphon protection against freezing.
- Dimensions: 724mm × 400mm × 310mm for easy cupboard fit
- Hot water flow rate: 10.2l/min at 35°C rise
- Wide modulation range from 3kW to 24kW for efficiency
- ErP A-rated with 94% seasonal efficiency
- Compatible with 20% hydrogen blend for future readiness
| Brand | Worcester |
|---|---|
| Width | 400 mm |
| Depth | 310 mm |
| Display Type | Full Colour LCD |
| Flow Rate | 10.2 l/min |
| Flue Included | No |
| Fuel Type | Gas |
| Heating Energy Rating | A |
| Heat Input Range | 3kW - 24kW |
| Heating Type | Combination Boiler |
| Height | 724 mm |
| Central Heating Output | 24 kW |
| Model Name / No | 7733600371 |
| Weight | 32 kg |
| Water Energy Rating | A |
| Colour | White |
| 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 Worcester Bosch Greenstar 4000 25kW is a wall mounted gas fired condensing combi boiler designed for small to medium sized properties. It provides both central heating and instantaneous hot water without the need for a separate cylinder or tank. This model is the successor to the Greenstar i-series and incorporates updated technology for improved efficiency and ease of use.
The boiler operates within a modulation range of 3kW to 24kW for heating and delivers a domestic hot water output of 25kW, supporting flow rates up to 10.2 litres per minute at a 35°C temperature rise. It is compatible with a 20% hydrogen blend and features an aluminium heat exchanger for efficient heat transfer. The unit is ErP A-rated with an efficiency of 94%, meeting current energy standards.
Key design elements include a compact size (724mm × 400mm × 310mm), Quiet Mark accreditation for low noise levels (around 45dB), and a full colour text display for straightforward control. It also offers features such as Quick Tap water saving technology, wireless connectivity with Bosch EasyControl, and integrated condensate siphon protection against freezing.
- Dimensions: 724mm × 400mm × 310mm for easy cupboard fit
- Hot water flow rate: 10.2l/min at 35°C rise
- Wide modulation range from 3kW to 24kW for efficiency
- ErP A-rated with 94% seasonal efficiency
- Compatible with 20% hydrogen blend for future readiness
| Brand | Worcester |
|---|---|
| Width | 400 mm |
| Depth | 310 mm |
| Display Type | Full Colour LCD |
| Flow Rate | 10.2 l/min |
| Flue Included | No |
| Fuel Type | Gas |
| Heating Energy Rating | A |
| Heat Input Range | 3kW - 24kW |
| Heating Type | Combination Boiler |
| Height | 724 mm |
| Central Heating Output | 24 kW |
| Model Name / No | 7733600371 |
| Weight | 32 kg |
| Water Energy Rating | A |
| Colour | White |
| 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.