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I need to replace my undercounter floor-mounted combi-boiler. My heating engineer has suggested the Worcester Greenstar Highflow 440CDi. The product brochure states that it requires 600mm above to install (which would mean cutting my worktop). The heating engineer believes he can install it...

:) Point taken - the possibility of a faulty engineer is being managed. The job is made particularly difficult as the previous occupants of the house installed it in an area where it is not possible to get access from above the boiler - one side only. He has been in contact with Tech Support and...

I have a problem with a Worcester Highflow 400 RSF which my heating engineer is struggling to solve. To begin with the diverter valve went, replaced and solved the initial problem. Shortly after the system was producing a kettling sound when the hot water ran. Hot water was VERY hot and...