Not so hot water

Discussion in 'Plumbing and Central Heating' started by Bibby1, 26 May 2021.

  1. Bibby1

    Bibby1

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    Hi

    Not a plumber, but hoping for some advice before going out to get help in.

    One of our bathrooms seems to be losing hot water, taps get warm but then cool back down. Water still runs. No issues in any other rooms and c.heating works fine. The taps aren’t mixer, separate hot and cold.

    we’ve got a vaillant boiler which is only about 5 years old and maintained annually with a magnetic cleaning device. We also have ufh in our kitchen which runs off it. No issues anywhere and pressure looks okay.

    Any tips what I could try or investigate would be really appreciated!

    Thanks in advance
     
  2. CBW

    CBW

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    Do you have a shower mixer?
     
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  4. Bibby1

    Bibby1

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    Hi. Yes the shower has a mixer. The bath taps and sink taps are separate hot and cold.
     
  5. CBW

    CBW

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    Could be failed check valve(s) on that shower mixer then.
     
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  7. Bibby1

    Bibby1

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    Thanks. I’m googling check valves now and whether they’re something you can test/replace

    dumb question, if that’s on the shower, would it also be responsible for the hot water in the bath and the sink?

    thanks for your help
     
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