Worcester Greenstar Highflow CDi Combi

Fitted from £3,336.00

These floor-standing combi boilers have been developed specifically for larger two bathroom properties where there is a need for higher heating and hot water outputs.



The Worcester Greenstar CDi Highflow is a well-established floor standing combi boiler that is renowned for industry-leading hot water flow rates.

Perfect for larger homes with two bathrooms. Worcester is the only company that produces a combi boiler of this kind.

Key benefits of the Worcester Greenstar Highflow CDi boiler:

  • Fits underneath a standard kitchen worktop
  • Larger two bathroom homes can be supplied by higher output options
  • Wide choice of controls enables greater comfort economy
  • Frost protection is included, reducing frost risk if installed in a garage or a cellar
  • Simple boiler control knobs with temperature display
  • Instantaneous hot water, always available

Prices include VAT and the following:

  • Installation
  • Chemical system flush
  • Standard flue
  • Worcester Bosch Guarantee: 7 Years as standard, or 10 Years when a System Filter is included

Additional information


Worcester Bosch

Boiler Type

Combi Boiler


Highflow 440CDi, Highflow 550CDi


Worcester 7 Years, Worcester 10 Years (including System Filter)


Natural Gas, LPG

Range Specifications

Greenstar Highflow 440CDi Greenstar Highflow 550CDi
ErP Efficiency Rating – Water Heating A A
ErP Efficiency Rating – Space Heating A A
ErP Data Sheet ErP Data Sheet ErP Data Sheet
LPG model available Yes Yes
EasyControl Compatible Yes Yes
Solar Compatible No No
Control Options Yes Yes
Hot water output (kW) 29.5 41.1
Dimensions (mm) height x width x depth 850 x 600 x 600 850 x 600 x 600
Hot water flow rate 35°c ∆T (litres per minute) 20 @ 35°c ∆T 25 @ 35°c ∆T


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