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Air in heating system

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  • 31-01-2006 8:40am
    #1
    mygt
    Closed Accounts Posts: 18 ✭


    Recently my the water pump on my gas bolier has started making a right old racket. (Pump was replaced 11 months ago) I think this is being caused by a lot of air in the rads.

    Before now I bled the bathroom rad once a month to let a little bit of air out but now this rad needs to be bled every 2-3 days. Each time it is stone cold so I assume it's full of air.

    I open the water valve to the system in the hot press when bleeding the rads to allow extra water in.

    Does anyone know why this might be happening?


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    #2
    sirlinux
    Registered Users Posts: 651 ✭✭✭sirlinux


    Any chance your bleeding while the pump is running, that tends to suck in air.


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    #3
    mygt
    Closed Accounts Posts: 18 ✭mygt


    No, pump is not running at the time.


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    #4
    tapest
    Registered Users Posts: 482 ✭✭tapest


    mygt wrote:
    Recently my the water pump on my gas bolier has started making a right old racket. (Pump was replaced 11 months ago) I think this is being caused by a lot of air in the rads.

    Before now I bled the bathroom rad once a month to let a little bit of air out but now this rad needs to be bled every 2-3 days. Each time it is stone cold so I assume it's full of air.

    I open the water valve to the system in the hot press when bleeding the rads to allow extra water in.

    Does anyone know why this might be happening?
    Are you losing water from system? Did plumber have to drain system(I know it's not usual) when changing pump. If your inlet is left open for short time, just to see if that rads gets cold again. If not your losing water....leak. Start at pump area...then bleed off valve.
    t


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    #5
    mygt
    Closed Accounts Posts: 18 ✭mygt


    The plumber didn't drain the system entirely, but did loose water when replacing the pump. However this was almost a year ago and it has been ok since.

    Can I leave the inlet valve open when the pump is running? I thought it had to be closed off. There are no obvious signs of a water leak any where in the house.


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