Worcester Greenstar 4000 12KW System Boiler

Worcester Greenstar 4000 12kW System Boiler

The Worcester Greenstar 4000 12kW System Boiler is an efficient and dependable option for homes that rely on a stored hot water cylinder. Designed with versatility in mind, it’s ideal for small to medium-sized properties that want consistent heating performance and reliable hot water delivery throughout the day. Its compact and lightweight build makes installation straightforward, even in tighter spaces. The boiler comes with a built-in pump and expansion vessel to simplify the setup, and it’s compatible with a wide selection of optional controls, giving homeowners the freedom to tailor their heating system for better comfort and improved energy savings. Whether you're upgrading an older boiler or installing a new system, the Greenstar 4000 offers dependable performance with modern efficiency.

Key Features

Compact, space-saving design Built-in pump and expansion vessel Optional plug-in diverter valve Wide range of compatible controls for enhanced efficiency

Technical Specifications

Manufacturer: Worcester Bosch Model: 4000 MPN: 7733600377 SKU: 79140 GTIN: 4057749856661 Performance: CH Output: 12kW CH Output (BTU): 40,000 ErP Heating Rating: A Rated Dimensions: Height: 724mm Width: 400mm Depth: 310mm Weight: Gross: 33.2kg Warranty: 7 Years (subject to manufacturer T&Cs)

FAQs

Is the 12kW output suitable for my home?

The 12kW model is ideal for **small to medium-sized homes** with moderate heating requirements and a stored hot water cylinder.

Does this system boiler require a separate hot water tank?

Yes. As a **system boiler**, it works alongside a hot water cylinder to deliver consistent hot water throughout the home.

Can I use smart controls with this boiler?

Definitely. The Greenstar 4000 range supports a **wide variety of optional smart and traditional controls**, allowing for greater comfort and energy efficiency.

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