Worcester combi boiler- Luke warm water situation

28 Jun 2020
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United Kingdom
I have a Worcester 25i combi boiler and would appreciate any advice... issue - my hot water isn't hot..
This last week, its started running luke warm...
I gave the heating a blast this evening & hoped that it might do something helpful, but no, radiators were indeed red hot... water still only luke warm.
Last edited:
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you will need to give more details, Worcester actually make more than one combi beleive it or not
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I was told - with the heating off, run the hot water and hold onto the heating flow pipe - I think its the thicker left one.
If that pipe gets hot, one thing it may point to is your diverter valve being faulty.
A new flap for this is about a tenner and its a doddle to change.

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