Worcester Greenstar 8000+ 40KW Combi Boiler

Worcester Greenstar 8000+ 40kW Combi Boiler

The Worcester Greenstar 8000+ 40kW Combi Boiler is a premium, high-efficiency combi boiler designed to deliver powerful heating and instant hot water for modern homes. As part of Worcester Bosch’s flagship 8000+ range, it brings together outstanding performance, stylish design and smart technology to create a reliable and energy-efficient solution for everyday living. Because it’s a combination boiler, it produces hot water on demand without the need for a separate cylinder or storage tank — perfect for properties where space is limited but high performance is still required. Its advanced condensing technology improves efficiency by recovering heat that would normally be lost, helping to keep running costs down. With a full-colour touch display, near-silent operation and compatibility with leading smart thermostats, the Greenstar 8000+ 40kW is designed for homeowners who want both convenience and top-tier reliability from their heating system.

Key Features

Combi system delivers heating and hot water instantly Ideal for medium to large homes needing higher hot water performance A-rated efficiency for both heating and hot water Full-colour digital touch screen for simple control and diagnostics Ultra-quiet performance, suitable for central living areas Modulating pump automatically adjusts output to reduce energy usage Smart thermostat compatible, including Bosch EasyControl

Technical Specifications

Manufacturer: Worcester Bosch Model: 8000+ MPN: 7736702582 SKU: 94058 GTIN: 4069143014356 Performance: Boiler CH Output: 33 kW / 114,989 BTU Max DHW Output: 40 kW Hot Water Flow Rate: 17.0 L/min @ 35°C rise ErP Heating Rating: A Rated ErP Hot Water Rating: A Rated Dimensions: Height: 780mm Width: 440mm Depth: 365mm Weight: 47kg (55kg gross) Warranty: 8 Years (subject to manufacturer T&Cs)

FAQs

Is the 40kW model suitable for larger homes?

Yes — its high output and strong flow rate make it ideal for medium to large properties, especially those with higher hot water needs.

Does this boiler need a hot water cylinder?

No. As a combi boiler, it provides hot water instantly without needing a cylinder or loft tank.

Can I use this boiler with a smart thermostat?

Absolutely. It’s fully compatible with smart controls like Bosch EasyControl, Hive, and Nest for remote heating management.

Check out our other products here.

Explore more from our range here.