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Thread: Evohome is Noisy - please help me

  1. #201
    Automated Home Legend paulockenden's Avatar
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    Is there anyone here that finds Evohome too noisy and who ALSO has a pressurised heating system (usually a combi boiler) ?

    It made a big difference when I switched from an old-school vented system, although the noise wasn't obtrusive even before that.

    i wonder whether all of the people with the noise issue are running unvented systems?

    P.

  2. #202
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    Quote Originally Posted by paulockenden View Post
    Is there anyone here that finds Evohome too noisy and who ALSO has a pressurised heating system (usually a combi boiler) ?

    It made a big difference when I switched from an old-school vented system, although the noise wasn't obtrusive even before that.

    i wonder whether all of the people with the noise issue are running unvented systems?

    P.
    Interesting point. You have mentioned this before. I am sure I once read about the conductivity of sound and pressure. I can't help here though, mine is a good old fashioned boiler.

  3. #203
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    Quote Originally Posted by paulockenden View Post
    Is there anyone here that finds Evohome too noisy and who ALSO has a pressurised heating system (usually a combi boiler) ?

    It made a big difference when I switched from an old-school vented system, although the noise wasn't obtrusive even before that.

    i wonder whether all of the people with the noise issue are running unvented systems?

    P.
    I am running with a combi and they are noisy unfortunately.

  4. #204
    Moderator Kevin's Avatar
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    I am running a pressured system and have noise issues.

    Someone told me maybe a year ago that new valves were coming onto the market that only made a noise when the system changed the set temperature. They achieved this by being based upon old style thermal expansion valves that had their setting alterable through a motor varying thickness within the mechanism. Thus ongoing regulation required no motor movement. I suppose at setpoint change they could do this really slowly to minimise noise too. Apparently they had also tried a local heating element to achieve offset but that unsurprisingly was impractical for battery life.

    I never found out the manufacturer or if these ever made it to market or not.

    K

  5. #205
    Automated Home Legend paulockenden's Avatar
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    I think old-school TRVs have quite a degree of hysteresis, so I don't think such an arrangement would be able to maintain the precise temperature control (and thus comfort levels) that you see with Evohome and similar systems.

  6. #206
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    Just to draw attention to a mod proposed by DIY2 in another thread that is claimed (I haven't tried it yet, waiting for the heating season) to reduce the noise: https://www.automatedhome.co.uk/vbul...ll=1#post40736

    Would be very interested to hear if anyone else tries it and how well they find it works.

  7. #207
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    Quote Originally Posted by filbert View Post
    Just to draw attention to a mod proposed by DIY2 in another thread that is claimed (I haven't tried it yet, waiting for the heating season) to reduce the noise: https://www.automatedhome.co.uk/vbul...ll=1#post40736

    Would be very interested to hear if anyone else tries it and how well they find it works.
    Hi, yes would be good to hear if it works for others too. The noise on mine has dropped to 1/3 of its previous level.

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