Worcester Greenstar 4000
Small-to-medium homes with one bathroom
Standard wireless thermostat included
Key features & benefits
Why customers across Burnley, Padiham, Nelson and the rest of East Lancashire pick the Worcester Greenstar 4000:
- Compact, easy-fit footprint
- A-rated heating & hot water
- Award-winning Worcester reliability
- Quiet operation — ideal for kitchens
- 10-year parts & labour warranty
Specifications
- Brand
- Worcester Bosch
- Type
- Combi Boiler
- Available outputs
- 25 kW · 30 kW
- Warranty
- 10 years
- Best for
- Small-to-medium homes with one bathroom
- Fitted price from
- £2,250
No hidden extras — ever.
Your £2,250 fixed price covers everything you need to swap your boiler:
New Worcester Greenstar 4000 unit
Genuine, brand-new from Worcester Bosch
Full installation labour
Gas-Safe registered engineer, 1-day install
Chemical system flush
Removes sludge & extends boiler life
Old boiler removal
Responsibly recycled — no hassle for you
Wireless thermostat
Included with every install as standard
10 years warranty registration
We register direct with Worcester Bosch
Building Notice cert
Submitted to Gas Safe within 48hrs
Commissioning
Pressure-test, balance & demonstrate the boiler
Aftercare
Free phone support for the lifetime of the boiler
Other combi boilers we fit
Worcester Greenstar 4000 — common questions
How long does it take to install the Worcester Greenstar 4000?▼
Most combi boiler swaps including the Worcester Greenstar 4000 take 1 working day. Conversions to a different system type (e.g., regular → combi) take 2 days. We arrive on time, run a full system flush and commission the boiler before we leave.
What's included in the £2,250 Worcester Greenstar 4000 price?▼
Our fixed quote includes the Worcester Greenstar 4000 unit, full installation labour, a chemical system flush, removal & responsible disposal of your old boiler, a standard wireless thermostat, system commissioning, manufacturer registration to activate your 10 years warranty, and a Gas Safe Building Notice. No hidden extras.
Is the Worcester Greenstar 4000 a good choice for my home?▼
Small-to-medium homes with one bathroom. Output range available: 25 kW · 30 kW. If you're not sure which size you need, we'll size the boiler properly using a heat-loss calc during our free survey.
What warranty comes with the Worcester Greenstar 4000?▼
The Worcester Greenstar 4000 comes with a 10 years parts & labour warranty when installed by us and serviced annually. As an accredited installer for Worcester Bosch, we register your warranty directly with the manufacturer — you don't have to do a thing.
Ready to swap your boiler?
Free fixed quote on the Worcester Greenstar 4000 — no callout charge, no obligation.