It's often said that you can't please everybody all of the time - but the advanced new Greenstar Highflow 440 condensing boiler from Worcester Bosch has so much to offer that it's already disproving such a notion.

This floor standing, energy-saving combi, is very good news for the environment and excellent news for specifiers, developers, installers and consumers alike.

Up to an incredible 97% of the gas consumed by a new Greenstar Highflow 440 condensing boiler is converted into heat for the heating and/or hot water system. Other types of boiler achieve around 80% efficiency. Therefore, compared with a new regular boiler, a Greenstar Highflow 440 can cut heating and hot water bills by between 15-20% - and it's up to 30% cheaper to run than an older boiler. Hence SEDBUK Band A rating for the new Greenstar Highflow 440. The Greenstar Highflow 440 condensing boiler delivers this energy-saving performance by ingeniously recycling exhaust gases to extract and re-use the latent heat - a highly efficient use of energy which also significantly reduces carbon dioxide emissions into the atmosphere.

And to all these major benefits you can add yet more: superlative Worcester Bosch quality and reliability; outputs and flow rates to comfortably satisfy the heating and hot water demands of the larger household with more than one bathroom; and truly exceptional all-round value for money.


91.0% Energy efficiency rating
EST Registered
LPG Compatible

WB5 series heatcell - robust cast aluminium/silicon construction
Heatronic III control system - sophisticated boiler management
Condensate dispersal pump - flexibility of siting
Pre-plumbing connection tray - allows fabrication of system
Filling loop within - neat and aesthetically pleasing 

DELIVERY IS NORMALLY 3/4 WORKING DAYS.

Please note prices in drop down below exclude VAT.