Worcester Greenstar Highflow 550CDi ERP Combi Boiler

Worcester Greenstar Highflow 550CDi ERP Combi Boiler


The Worcester Greenstar Highflow 550CDi combi boiler is a floor standing combi boiler that has been designed for large properties with a large number of radiators and a high demand for instant hot water.

The higher outputs of Greenstar CDi boilers can be suitable for larger properties with multiple bathrooms.

  • Central heating output: 30.6kW
  • Domestic hot water flow rate: 25 litres per minute

You can control both the hot water and central heating temperatures on a Worcester Greenstar 550CDi combi. They also offer the widest choice of operating features within the Worcester boiler range, providing the ultimate in user convenience, performance and fuel economy.

Like all Greenstar boilers from Worcester, the Highflow series is A-rated. Not only will this reduce your heating bills, but also be a lot kinder to the environment.


  • Fully ErP compliant 
  • Keep hot facility - instantly available hot water
  • Hot water and central heating temperatures can be controlled
  • Multi-directional fluing means boiler can be sited in a wider variety of places
  • Mechanical, digital and new generation intelligent controls all compatible
  • Heat load and flow generated precisely to meet the heating systems requirements using a modulating pump
  • 5 Year warranty on Greenstar Gas Boilers as standard (terms and conditions apply)
  • Specs

    Brand Worcester
    Lead Time 1 - 2 working days
    Boiler Type Combi
    Fuel Type Natural Gas
    Heating Output Range 30 - 35
    DHW Flow Rate 25
    DHW Flowrate Range 16+
    Flue No
    Programmer No
    Output BTU/H No
    Height (mm) 850
    KW Output 30.6
    Width (mm) 660
    Depth 600
    Warranty 5 Years
    Manufacturer Part No: 7731600100