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Cool radiators

  • 25-02-2013 12:12pm
    #1
    Bigcheeze
    Closed Accounts Posts: 2,858 ✭✭✭


    Can anyone tell me what causes the lower half of radiators to be barely warm, while the top half is hot? I only noticed recently as I had always just touched the top of the radiators if checking them.

    It only seems to affect some radiators. The entire system is a year old.


Comments

  • #2
    breghall
    Registered Users, Registered Users 2 Posts: 605 ✭✭✭breghall


    was just going to post the same question, some not all of mine are cold on the bottom and hot on top , whilst ones in the next room are boiling all over. Someone told be it's a build up of sludge within then radiator and it needs to be flushed out, only I don't know how to do this.


  • #3
    aujopimur
    Registered Users, Registered Users 2 Posts: 3,953 ✭✭✭aujopimur


    As the system is new, I'd say it needs to be balanced, or the pump speed needs to be increased.


  • #4
    Bigcheeze
    Closed Accounts Posts: 2,858 ✭✭✭Bigcheeze


    aujopimur wrote: »
    As the system is new, I'd say it needs to be balanced, or the pump speed needs to be increased.

    Thanks, is that easy to do ?


  • #5
    Dtp79
    Closed Accounts Posts: 2,097 ✭✭✭Dtp79


    breghall wrote: »
    was just going to post the same question, some not all of mine are cold on the bottom and hot on top , whilst ones in the next room are boiling all over. Someone told be it's a build up of sludge within then radiator and it needs to be flushed out, only I don't know how to do this.
    Have someone look at your system to see if its a balancing issue or a sludge issue. You won't be able to flush it yourself if it is sludge as you'll need a proper machine and chemicals


  • #6
    Bigcheeze
    Closed Accounts Posts: 2,858 ✭✭✭Bigcheeze


    Dtp79 wrote: »
    Have someone look at your system to see if its a balancing issue or a sludge issue. You won't be able to flush it yourself if it is sludge as you'll need a proper machine and chemicals

    It's not sludge. The system is less than a year old.


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  • #7
    mloc123
    Registered Users, Registered Users 2 Posts: 9,454 ✭✭✭mloc123


    Bigcheeze wrote: »
    It's not sludge. The system is less than a year old.

    A poorly setup system could sludge up in less time than that...


  • #8
    Dtp79
    Closed Accounts Posts: 2,097 ✭✭✭Dtp79


    Bigcheeze wrote: »

    It's not sludge. The system is less than a year old.
    Sorry bigcheeze I was saying that to breghall not you. Youres is more than likey balancing issue


  • #9
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    Dtp79 wrote: »
    Sorry bigcheeze I was saying that to breghall not you. Youres is more than likey balancing issue
    4 things can cause this issue, sludge/blockage, incorrect balancing or weak or under-sized circulating pump or finally poor system design.


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