Worcester Bosch Greenstar 8000 (Life & Style)
The Worcester Bosch Greenstar 8000 is the brand's flagship Greenstar range, available as combi, system or regular, including the most powerful gas combi Worcester Bosch makes.
At a glance
- Configurations: Combi, System, Regular
- Best suited to: Larger, busier homes with multiple bathrooms
- Fuel: Mains natural gas (some variants are LPG-convertible, check the manufacturer’s data).
Specifications
Match the badge in front of you to a row before you use any of this. Every figure below was read from the Worcester Bosch literature listed under Sources at the foot of this page, checked 6 September 2026. Outputs, variants and part numbers change by year, so the appliance data plate is still the last word.
| Variant | Output | GC number |
|---|---|---|
| Greenstar 8000 Life 30kW combi (GR8300iW 30 C) | 30kW | 47-800-18 |
| Greenstar 8000 Life 35kW combi (GR8300iW 35 C) | 35kW | 47-800-17 |
| Greenstar 8000 Life 40kW combi (GR8300iW 40 C) | 40kW | 47-800-16 |
| Greenstar 8000 Life 45kW combi (GR8300iW 45 C) | 45kW | 47-800-15 |
| Greenstar 8000 Life 50kW combi (GR8300iW 50 C) | 50kW | 47-800-14 |
| Greenstar 8000 Style 30kW combi (GR8700iW 30 C) | 30kW | 47-800-03 |
| Greenstar 8000 Style 35kW combi (GR8700iW 35 C) | 35kW | 47-800-02 |
| Greenstar 8000 Style 40kW combi (GR8700iW 40 C) | 40kW | 47-800-01 |
| Greenstar 8000 Style 45kW combi (GR8700iW 45 C) | 45kW | 47-406-99 |
| Greenstar 8000 Style 50kW combi (GR8700iW 50 C) | 50kW | 47-406-98 |
- These are the natural gas GC numbers printed in Worcester's own installation manuals. The 8000 Style also comes in CB variants with a separate set of numbers, so match the appliance type code on the badge.
Where the data plate is
On the frame of the front cover on both the 8000 Life and the 8000 Style, where Worcester shows the position in Fig. 1 of the user instructions. The same badge carries the model, the serial number and the GC number.
Reading the plate
Worth knowing on site
- Available in combi, system and regular (heat-only) configurations.
- Connects to a compatible smart thermostat; higher outputs suit high hot-water demand.
On the tools
As the flagship Greenstar, the 8000 is the one engineers reach for when a property has multiple bathrooms or high simultaneous hot-water demand. Its smart-thermostat compatibility means installs often involve more time discussing controls with the customer than a straight like-for-like swap.
Variants and configuration
Uniquely among the Greenstar family covered here, the 8000 comes in combi, system and regular form, including Worcester Bosch's most powerful gas combi. That spread means confirming the exact configuration from the data plate matters even more than usual before ordering parts.
Where it sits in the range
The 8000 sits above both the 2000 and 4000 as Worcester Bosch's premium Greenstar tier, aimed at larger, busier households. It is the natural upgrade path when a smaller combi in the range can no longer meet a growing home's hot-water demand.
Finding the manual and the data plate
For the exact outputs, gas rate, dimensions and commissioning figures, work from the appliance’s data plate and the manufacturer’s installation and servicing instructions. The GC (Gas Council) number and serial are on the data plate, usually behind the front panel or on the underside. Worcester Boschpublishes its manuals and support at Worcester Bosch support.
Frequently asked
Useful while you’re on the tools
More from Worcester Bosch
Manifold is not affiliated with or endorsed by Worcester Bosch. Brand and model names are used only to help engineers find the right resources. Specifications and available variants change by year and model, so always work from the appliance’s data plate and the manufacturer’s own installation and servicing manual. Gas work must be carried out by an appropriately Gas Safe registered engineer.