Worcester Greenstar 4000
Small-to-medium homes with one bathroom
All combi boilers come with a 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
All combi boilers come with a standard wireless thermostat included
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.