Worcester Bosch is one of the most reliable and trusted boiler manufacturers and have an excellent reputation for manufacturing and engineering, and this hasn’t been lost on their condensing combi boiler range.

Worcester Greenstar Highflow 440CDi Combi Boiler

Over the last few years, boiler technology has advanced significantly and this is espically true of the Worcester Greenstar Highflow 440CDi. Older boilers that cannot utilise the modern innovations in boiler technology can have extremely low efficiency ratings, some as low as 60%, which in essence leads to far higher heating bills. Whereas modern condensing boilers can achieve over 90% efficiency, helping you to reduce your fuel bills dramatically. It makes sense to replace your boiler with a new high efficiency model, as this will then equate to lower bills.

The Greenstar Highflow 440CDi is an incredibly reliable boiler and is ideal for use in a larger home with multiple bathrooms. It has the capacity to heat your home with ease and provide large amounts of hot water with an excellent flow rate. You will find the 440CDi can take just about anything you throw at it.

The boilers are floor-standing, rather than wall-mounted and they can take up quite a bit of space. Due to their size, they won’t fit in most cupboards; however, they’re roughly the same size as a washing machine or tumble dryer, so they would not be too big to have in a utility room, cellar or garage.

At a Glance

Below you’ll find a summary of the important info and Tech Specifications for the boiler:Worcester Greenstar Highflow 440CDi

  • Heating output: 29.2kw
  • Hot water output: 29.5kw
  • Ideal for: Large homes with multiple bathrooms
  • ERP rating: A rated – 93% efficiency
  • Guarantee: 10 years*

(*10 year guarantee subject to the boiler being serviced annually by a Gas Safe Registered engineer).

Warranty and Guarantee

Although Worcester Bosch boilers are incredibly reliable, you’ll still want to ensure your investment is protected should anything go wrong, which is why you need a good guarantee. When you purchase a boiler from the Worcester Bosch Greenstar range you will receive a 5 year warranty as standard that can be upgraded to 10 Years of warranty cover to give you complete peace of mind.


Why choose a Worcester Bosch Greenstar boiler?

Worcester is the first choice for millions of quality and value focused homeowners. In a recent Worcester customer satisfaction survey it has been revealed that they are also the choice of professional tradesmen too, with 9 out of 10 heating engineers choosing Worcester to provide warmth and hot water for their homes and families.

worcester bosch logo


  • Excellent technology
  • Large Combi Boiler
  • A rated – highest possible efficiency rating
  • Floor standing large boiler
  • Easy to service removable side panels
  • Suited to large home needs lots of hot water
  • Strong flow rate of 14.7 litres per minute
  • No water tank required.
  • Up to 10 years warranty
  • Excellent Which? reviews score of 75%

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