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Central Heating Noise

  • 17-11-2008 9:09pm
    #1
    Scottie99
    Registered Users, Registered Users 2 Posts: 1,289 ✭✭✭


    Our central heating boiler has started to make "kettling" noises:mad:. Does anyone know how much it would cost to get the system power flushed?

    Thanks


Comments

  • #2
    Micky Dolenz
    Registered Users, Registered Users 2 Posts: 44,080 ✭✭✭✭Micky Dolenz


    Depends on where you are. No more than €600 plus VAT


  • #3
    jhegarty
    Registered Users, Registered Users 2 Posts: 6,441 ✭✭✭jhegarty


    Isn't there a bottle of stuff (I have no idea what it actually is) that you can feed into the tank to stop the noise ?


  • #4
    SectionF
    Closed Accounts Posts: 1,890 ✭✭✭SectionF


    What are kettling noises?


  • #5
    crosstownk
    Registered Users, Registered Users 2 Posts: 12,863 ✭✭✭✭crosstownk


    SectionF wrote: »
    What are kettling noises?

    Similar to the sound a kettle makes when it is boiling.
    Untitled Image




  • #6
    Doctor DooM
    Moderators, Music Moderators Posts: 25,872 Mod ✭✭✭✭Doctor DooM


    My central heating did that when it had trouble with air entering the system.


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  • #7
    SectionF
    Closed Accounts Posts: 1,890 ✭✭✭SectionF


    We had a system installed four years ago, and it made this sound in several - not all - radiators from the start, so it is not just a feature of old systems.

    I believe that the installer has not made serious efforts to fix the problem, and I am seriously thinking of taking him to court. Before I do, does anyone know if there is a simple solution to this?


  • #8
    crosstownk
    Registered Users, Registered Users 2 Posts: 12,863 ✭✭✭✭crosstownk


    SectionF wrote: »
    We had a system installed four years ago, and it made this sound in several - not all - radiators from the start, so it is not just a feature of old systems.

    That type of noise from the rads sounds like air in the rads themselves rather than the boiler kettling. It may be a simple case of bleeding each rad, topping up the system and bleeding again until all the air has been erradicated. It could take a few attempts but assuming that you have no leaks from the rads & pipework there is no reason why all the air cannot be removed from system. The pressure gauge at the boiler is your friend for this job.
    Untitled Image




  • #9
    Scottie99
    Registered Users, Registered Users 2 Posts: 1,289 ✭✭✭Scottie99


    We were quote €700 to do the job but thankfully our neighbours work colleague who did it for €250. The job entailed putting a de-scaler in the system for 24hrs (i think), then flushing out 2/3 times and then adding a Inhibitor to help keep the system(now closed) clean in the future. Unfortunately some gunk got into the heat exchanger and this had to be replaced (€130) :D

    Now the radiators are boiling hot and boiler very quite:D


  • #10
    SectionF
    Closed Accounts Posts: 1,890 ✭✭✭SectionF


    crosstownk wrote: »
    That type of noise from the rads sounds like air in the rads themselves rather than the boiler kettling. It may be a simple case of bleeding each rad, topping up the system and bleeding again until all the air has been erradicated. It could take a few attempts but assuming that you have no leaks from the rads & pipework there is no reason why all the air cannot be removed from system. The pressure gauge at the boiler is your friend for this job.
    Thanks for that. We've tried bleeding and topping up, as has the installer. It seems to me that whenever we intervene do something like that that the noise stops, but only temporarily. Once the system settles down again the noises return. My fear is that we do actually have a leak hidden somewhere.


  • #11
    crosstownk
    Registered Users, Registered Users 2 Posts: 12,863 ✭✭✭✭crosstownk


    SectionF wrote: »
    My fear is that we do actually have a leak hidden somewhere.

    I'd be inclined to agree with you.

    But you need to monitor the system pressure - either when the system is cold or fully heated. My system pressure is about 0.8bar when cold and 1.6 when fully heated. It never looses pressure unless I bleed. I had an extension built a while back and a new boiler installed so I had a few teething problems including two old dodgey, leaking rad valves but it's all sorted now.

    Keep an eye on the system pressure daily and top up if you have to. See how long it takes for the pressure to drop (if at all) and take things from there. Report your findings here, if you like.
    Untitled Image




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  • #12
    SectionF
    Closed Accounts Posts: 1,890 ✭✭✭SectionF


    crosstownk wrote: »
    I'd be inclined to agree with you.

    But you need to monitor the system pressure - either when the system is cold or fully heated. My system pressure is about 0.8bar when cold and 1.6 when fully heated. It never looses pressure unless I bleed. I had an extension built a while back and a new boiler installed so I had a few teething problems including two old dodgey, leaking rad valves but it's all sorted now.

    Keep an eye on the system pressure daily and top up if you have to. See how long it takes for the pressure to drop (if at all) and take things from there. Report your findings here, if you like.
    I'll do that - thanks!


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