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Thread: Evohome Stored Hot Water

  1. #1
    Automated Home Jr Member
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    Jan 2018
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    Default Evohome Stored Hot Water

    Just wondering how other Evohome users setup stored hot water. Do you have it set to permanently on so that it just replaces what is used (short bursts) or do you have it set to only come on at certain times of the day? We have a household of 4 adult and I am trying to work out which would be the most efficient way of using it.

    Thanks
    M

  2. #2
    Automated Home Legend
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    Jul 2014
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    I guess this completely depends on the usage of your HW. I doubt there is an ideal setting. The one feature I do love in the Evohome wrt HW is Differential. That allows the water temp to drop by that amount before the boiler is fired. It then avoids the short bursts.

  3. #3
    Automated Home Legend
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    When I had stored hot water (I now have a combi) I had it set to come on for an hour in the morning and an hour at night.

  4. #4
    Automated Home Legend
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    Because I have the ability to raise the Flow temperature when heating the HW cylinder, I used to time the HW recharge to when the house was the coldest I.e. First thing in the morning and then around early evening, when the rooms are heating up again from their day time set backs. This way the rooms can also benefit from the raised Flow temperature without me having to worry about HW priority. In the sunny months my HW is heated with the solar panels, so its less of an issue.

  5. #5
    Automated Home Jr Member
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    Apr 2020
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    I used to have my hot water storage just heat for an hour or so every night and morning, until someone questioned why you would ever want your system set so that you could feasibly run out of hot water when you need it.

    With a modern well insulated cylinder the heat loss is pretty low, so now I have it timed to be on from early morning until late in the evening. It only fires up when needed, so if it needs it, I let it!
    It then just doesn't run at night to save cycling the boiler in the night if the temperature did happen to drop below the threshold, which it probably wouldn't anyway.

  6. #6
    Automated Home Legend
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    An hour each end of the day was always fine for me and we never ran out of hot water.

  7. #7
    Automated Home Jr Member
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    Jan 2018
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    Thanks for the tips everyone. ����

  8. #8
    Automated Home Jr Member
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    Jan 2018
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    Thats not a bad idea i set it up last night and will see how it goes. One thing i did notice in the morning when i checked my smart meter is that even though the central heating was switched off and the hot water had not been on over night the smart meter still showed some gas usage, which i find odd.

    Cheers

  9. #9
    Automated Home Jr Member
    Join Date
    Oct 2017
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    Default

    Also interested. We have pressurised cylinder and have the EvoHome temp sensor connected to it. The read frequency seems slow. Any recommended settings for timings, differentials etc?

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