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Problem with hot water?

Any ideas welcomed on this one.

We have a problem with our hot water supply. We have a gas boiler and hot water cylinder ie not a combi boiler.

When you initially run the hot water it is fine, and for example you can have a shower, wash up and everything is normal. however after you have used a fair amount of hot water in a short time then the flow rate decreases to a trickle and then stops. If you turn off the tap, leave it a minute and then turn it on again, the flow rate is a bit better for a while but then drops again.

In the shower, this is particularly annoying especially as it seems to be causing the power shower pump to cut out intermittently during a shower, stopping the flow of water altogether.

The cold water supply appears to be unaffected.

I did have a plumber out to have a look but while he was there it was fine. I suspect this was because we had not been using the hot water for a while before his visit. we had not realised at that point that the problem seemed to occur after using up most of the hot.

any suggestions? tia

Comments

  • Hi

    Next time it runs short ,have a look in the cold water tank in the loft(or wherever it's located) Is it empty?

    Corgi Guy.
    Ask to see CIPHE (Chartered Institute of Plumbing & Heating Engineering)
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