Worcester Bosch Greenstar 4000 35kW
The 35 kW version of the Greenstar 4000 delivers higher output for larger homes and properties with greater hot water demand. Ideal for 4-bedroom homes where simultaneous hot water use is common.
Technical Specifications
Key Features
- 94% ErP seasonal efficiency
- 35 kW heat output for larger properties
- Built-in frost protection
- OpenTherm compatibility
- Suitable for 4-bed homes
- Pre-plumbing jig available
Best For
3–4 bed homes with two bathrooms requiring higher flow rates.
Common Questions About the Greenstar 4000 35kW
Do I need a 35 kW boiler?
For 3–4 bedroom homes with two bathrooms, a 35 kW combi is often the right choice. Our engineers can calculate the correct output for your property during a free survey.
Is the 35 kW Greenstar 4000 more efficient than the 28 kW?
Both achieve 94% efficiency. The 35 kW simply delivers more heat and hot water — it doesn't cost more to run if sized correctly for your property.
What is the price difference between 28 kW and 35 kW?
Typically around £100 difference in supply cost. For larger properties it's money well spent.
Other Worcester Bosch Models We Install
Ready to Get the Greenstar 4000 35kW Installed?
We supply and install the Worcester Bosch Greenstar 4000 35kW across Corby, Kettering, Northampton, and all surrounding areas. Fixed price, Gas Safe certified.