Experience efficient and eco-friendly heating with the Greenstar 4000 boiler.

The Worcester Bosch Greenstar 4000 is a high-efficiency boiler designed to provide reliable and sustainable heating for your home. With its compact design and advanced features, this boiler is a perfect choice for homeowners seeking energy efficiency and comfort.

Key Features:

• 100% Planet-Friendly Packaging: Committed to sustainability, the Greenstar 4000 comes in eco-friendly packaging.
• Front Access: Easily access key components for maintenance and servicing.
• Longer Flue Lengths: Flexible installation options with flue lengths up to 12 meters.
• Intuitive Display: The full-color display provides clear and easy-to-read information.
• Quiet Operation: Enjoy a peaceful home with the boiler’s quiet 45dB(A) operating noise.
• Compatibility: Works seamlessly with the Greenstar Intelligent Filling System for efficient water management.
• Modulating Output: Adjusts heating output from 3kW to 10kW to match your home’s needs.
• Increased DHW Efficiency: Reduces wasted water while maintaining high flow rates.
• Full Flow Rates: Delivers full flow rates from 1 bar mains pressure.

Choose the Worcester Bosch Greenstar 4000 for reliable, efficient, and eco-friendly heating.