Worcester Bosch Greenstar 8000+ 45kW Gas Combi Boiler
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Worcester Bosch Greenstar 8000+ 45kW Gas Combi Boiler
(Approx. 3-5 working days)


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The Worcester Bosch Greenstar 8000+ 45kW is a wall mounted, condensing gas combi boiler designed for high demand heating and hot water applications. With a central heating output of 45kW and a domestic hot water (DHW) flow rate of up to 18.3L/min at 35°C, it is suitable for larger properties with multiple bathrooms.
It operates at up to 94% central heating efficiency and holds an ErP A rating for both heating and hot water, aiding energy cost control. The combi boiler features a full colour touchscreen control interface and supports wireless connection to smart thermostats, while integrating an automatic filling system that maintains boiler pressure without manual intervention.
A compact unit measuring 780mm × 440mm × 365mm and weighing 43kg, it offers a reinforced steel front cover with easy access panels and front facing handles. Installation and maintenance are simplified by tool free access to internal components, and it carries a 12 year warranty when installed by a Worcester accredited installer.
- 45kW output supports simultaneous heating and hot water without loss of performance
- 94% ErP A rated efficiency reduces energy consumption
- Touchscreen interface with wireless connectivity enables remote control
- Automatic filling system maintains optimal pressure without manual input
- Removable side and top panels provide tool free servicing access
| Brand | Worcester |
|---|---|
| Width | 440 mm |
| Energy Rating | Not Selected |
| Depth | 365 mm |
| Display Type | Full Colour Touchscreen |
| Flow Rate | 18.3 l/h |
| Flue Included | No |
| Fuel Type | Gas |
| Heating Energy Rating | A |
| Height | 780 mm |
| Heating Output | 45 kW |
| Model Name / No | 7736702583 |
| Weight | 43 kg |
| Water Energy Rating | A |
| Colour | White |
| Mount Type | Wall Mounted |
| Hydrogen Ready | No |
- 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 8000+ 45kW is a wall mounted, condensing gas combi boiler designed for high demand heating and hot water applications. With a central heating output of 45kW and a domestic hot water (DHW) flow rate of up to 18.3L/min at 35°C, it is suitable for larger properties with multiple bathrooms.
It operates at up to 94% central heating efficiency and holds an ErP A rating for both heating and hot water, aiding energy cost control. The combi boiler features a full colour touchscreen control interface and supports wireless connection to smart thermostats, while integrating an automatic filling system that maintains boiler pressure without manual intervention.
A compact unit measuring 780mm × 440mm × 365mm and weighing 43kg, it offers a reinforced steel front cover with easy access panels and front facing handles. Installation and maintenance are simplified by tool free access to internal components, and it carries a 12 year warranty when installed by a Worcester accredited installer.
- 45kW output supports simultaneous heating and hot water without loss of performance
- 94% ErP A rated efficiency reduces energy consumption
- Touchscreen interface with wireless connectivity enables remote control
- Automatic filling system maintains optimal pressure without manual input
- Removable side and top panels provide tool free servicing access
| Brand | Worcester |
|---|---|
| Width | 440 mm |
| Energy Rating | Not Selected |
| Depth | 365 mm |
| Display Type | Full Colour Touchscreen |
| Flow Rate | 18.3 l/h |
| Flue Included | No |
| Fuel Type | Gas |
| Heating Energy Rating | A |
| Height | 780 mm |
| Heating Output | 45 kW |
| Model Name / No | 7736702583 |
| Weight | 43 kg |
| Water Energy Rating | A |
| Colour | White |
| Mount Type | Wall Mounted |
| Hydrogen Ready | No |
- 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.










