Greenstar Heatslave II

Key benefits include:

  • High Efficiency: Designed to reduce fuel consumption and lower heating bills.

  • Versatile Installation: Suitable for both indoor and outdoor setups.

  • Instant Hot Water: No need for a separate hot water cylinder.

  • Trusted Quality: Manufactured by Worcester Bosch, renowned for award-winning customer service and product reliability.

The Greenstar Heatslave II by Worcester Bosch is the nation’s best-selling oil-fired combi boiler, offering an excellent solution for properties without access to mains gas. Built with efficiency and reliability in mind, it provides instant hot water and central heating directly from the boiler, eliminating the need for a separate water tank.

This model features a sleek, compact design that fits neatly into a kitchen or utility room, while also being available in an outdoor version for saving indoor space. With advanced controls, excellent energy efficiency, and a robust build, the Greenstar Heatslave II is engineered to withstand the demands of busy households.

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How long do Worcester Bosch boilers last?

With regular servicing and maintenance, a Worcester boiler typically lasts 12–15 years. Some can last even longer if well maintained.

What types of boilers does Worcester Bosch offer?

Worcester Bosch manufactures:

  • Combi Boilers – For instant hot water and heating, no tank required.

  • System Boilers – Require a cylinder for hot water storage.

  • Regular (Conventional) Boilers – Work with tanks and are ideal for older systems or larger properties.

How energy efficient are Worcester Bosch boilers?

Most modern Worcester boilers have an A-rated ErP efficiency (over 90%). This helps reduce energy bills and carbon footprint compared to older G-rated boilers.

How often should I service a Worcester Bosch boiler?

You should service your boiler once a year. Annual servicing ensures it runs safely, maintains efficiency, and keeps your manufacturer warranty valid.

The Worcester Bosch Greenstar Heatslave II is the UK’s most popular oil-fired combi boiler, delivering efficient heating and hot water on demand. Compact, reliable, and designed for both indoor and outdoor installation, it’s perfect for homes off the mains gas grid.

About Worcester Bosch

Worcester Bosch is a trusted name in the UK heating industry, renowned for manufacturing high-quality boilers that deliver exceptional performance and reliability. With over 60 years of expertise, the brand has earned countless awards, including multiple Which? Best Buy accolades.

Designed with British homes in mind, Worcester Bosch boilers combine sleek, modern styling with advanced energy-saving features. They are engineered for efficiency, quiet operation, and long-term durability, making them a top choice for homeowners and installers alike.

Backed by generous warranties and a nationwide network of accredited engineers, Worcester Bosch ensures every customer enjoys dependable heating and complete peace of mind. The brand also remains committed to innovation and sustainability, helping households reduce their energy bills and carbon footprint.

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