Worcester Greenstar 8000+ 45kW Combi Boiler
The Worcester Greenstar 8000+ 45kW Combi Boiler is one of the most powerful gas combination boilers available in the Greenstar 8000+ range. Designed for homes with high heating and hot water demands, it delivers exceptional performance while offering the reliability and advanced technology Worcester Bosch is known for.
As a combi boiler, it provides both heating and instant hot water directly from one unit, removing the need for a separate cylinder or storage tank. This makes it an excellent choice for larger households that want strong hot water flow without sacrificing space.
Engineered with high-efficiency condensing technology, the Greenstar 8000+ 45kW is A-rated for both heating and hot water, helping to reduce energy usage and keep running costs down. It also features a modern digital display, built-in frost protection and extremely quiet operation — perfect for installation in more central areas of the home.
With its impressive hot water performance and robust output, this model is ideal for larger properties with multiple bathrooms or higher-than-average hot water requirements.
Key Features
High-performance 45kW combi boiler suitable for large homes
Instant heating and hot water from a single compact unit
A-rated efficiency for reduced running costs and eco-friendly operation
Easy-to-use digital display for simple control and system monitoring
Quiet operation, ideal for flexible placement within the home
Built-in frost protection for year-round reliability
Part of the premium Worcester Bosch Greenstar 8000+ range
Technical Specifications
Manufacturer: Worcester Bosch
Model: 8000+
MPN: 7736702583
SKU: 94059
GTIN: 4069143014363
Performance:
CH Output: 33 kW / 115,330 BTU
Max DHW Output: 45 kW
Hot Water Flow Rate: 18.0 L/min @ 35°C rise
ErP Heating Rating: A Rated
ErP Hot Water Rating: A Rated
Dimensions:
Height: 780mm
Width: 440mm
Depth: 365mm
Weight: 49kg (57kg gross)
Warranty:
8 Years (subject to manufacturer T&Cs)
FAQs
Is the 45kW model suitable for large homes?
Yes — its high output and strong hot water flow rate make it ideal for larger homes, especially those with multiple bathrooms.
Do I need a hot water cylinder for this boiler?
No. This is a combi boiler, so it provides instant hot water without the need for a cylinder or loft tank.
Is the boiler quiet when running?
Yes. The 8000+ range is designed for reduced noise, making it suitable for installation in kitchens, utilities or even internal cupboards.
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