Worcester 240 Combi Noise Through Rads

Discussion in 'Plumbing and Central Heating' started by pg325, 15 Mar 2009.

  1. pg325

    pg325

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    My heating has a rushing/humming noise through the rads, i've fitted a new fan and new Grundfos pump which is set to speed 3, the noise is still evident but a bit less, if I reduce the speed to 2 its a lot better but I've been told to keep it on 3 because its a combi.

    I can't think what else it could be, the system is using microbore tubing throughout, could it be the pipework is starting to clog and needs cleaning?

    What cleaner and noise reduction solutions can people recommend.

    Thanks.

    PG.
     
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