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Hot water from Worcester Bosch Greenstar30i combi

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Jaybrian

Aug 24, 2021
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West Midlands
Member Type
DIY or Homeowner
I have a newly installed Worcester Bosch greenstar 30i combi boiler. When i have the downstairs hot tap fully open, the upstairs hot water bath tap has very little flow. Is this a boiler problem, or is it down to the water pipe configuration, ie the downstairs tap is the easiest path for the hot water to follow.
 
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