Worcester Bosch Greenstar 28CDi 28kW Combi Boiler

Benefits of the Worcester Bosch Greenstar CDi Compact 28kW Combi Boiler

• High-Efficiency Heating & Hot Water
  Condensing in both heating and hot water modes, this boiler maximises fuel savings and delivers excellent energy efficiency ErP A-rated for both heating and hot water.

• Compact, Cupboard-Fit Design
  At just 280mm deep, this boiler is small enough to fit in a standard kitchen cupboard ideal for homes with limited space or minimalist layouts.

• Smart Pre-Heat & ECO Modes
  Choose between instant hot water with pre-heat or energy-saving ECO mode—customised for your daily routine and comfort.

• User-Friendly LCD Display
  Features an easy-to-use LCD screen for checking operating status, adjusting settings, and accessing diagnostics great for quick commissioning and everyday control.

• Adjustable Max Temperature Setting
  Set a maximum heating limit to prevent overheating ideal for homes with children or elderly residents, improving safety and comfort.

• Built-In Frost Protection
  Protects both the boiler and surrounding pipework from freezing ensuring reliable performance through cold weather.

• Sturdy Wall Mounting System
  Includes a robust metal wall mounting jig for secure and hassle-free installation, keeping the boiler safely fixed in place.

• Quiet Operation at 52 dB(A)
  One of the quietest boilers in its class, making it perfect for use in open-plan spaces or homes where noise is a concern.

• Strong Hot Water Flow Rate
  Delivers up to 11.4 litres per minute at a 35°C rise ideal for homes with medium hot water demands.

• Solar Compatible for Greener Homes
  Can be integrated with solar thermal systems, helping you lower your carbon footprint and energy bills further.

• 7-Year Guarantee (Extendable to 8 Years)
  Comes with a 7-year manufacturer warranty, which extends to 8 years when installed with any Greenstar system filter, providing long-term peace of mind.
  
  

  Worcester Bosch Greenstar CDi Compact 28kW Combi Boiler – Technical Specification

  This high-efficiency gas combi boiler is ideal for medium-sized homes, offering powerful hot water performance, compact dimensions for space-saving installation, and built-in features for energy efficiency and safety.

  Product type: Gas combi boiler
  Brand: Worcester Bosch
  Model number: 7733600054
  Range: Greenstar CDi
  Fuel type: Natural gas
  Heat output: 28 kW
  DHW output range: 7.03 kW to 28 kW
  DHW flow rate at 35°C rise: 11.4 litres per minute
  CH condensing max output: 28 kW
  ERP rating: A-rated energy efficiency
  NOx class: Class 2 (low emissions)
  Solar compatible: Yes
  Noise level: 52 dBA (quiet operation)
  Guarantee: 7 years manufacturer warranty

  Dimensions
  Height: 978mm
  Width: 395mm
  Depth: 280mm
  

  What’s in the Box

  When you purchase the Worcester Bosch Greenstar CDi Compact 28kW Combi Boiler, you’ll receive:

  • 1 × Greenstar CDi Compact 28kW combi boiler unit

  • 1 × Wall mounting jig (for easy and secure installation)

  • Built-in frost protection system

  • Integrated pump and expansion vessel

  • Built-in condensate trap

  • Built-in diverter valve

  • Comprehensive installation and user manual

  • Guarantee registration documentation

  Please note: Flue kit, system filter, and accessories such as controls or programmer are sold separately unless specified in a pack.