Hi. I am just after a bit of advise. Our boiler, which is an Icos Ideal HE12, makes a noise whenever the water is heating up. At the mo we don't have our CH switched on. The noise sounds like water travelling through the pipes, like a gushing sound. It happens when the boiler comes on in the morning, and seems to be pretty constant until the boiler switches itself off. Has anyone got any suggestions on what this could be, or how I could fix myself? Thanks!
Icos boiler noise
- Thread starter Hungryhippo127
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If I had one of these Boilers I would see the noise as a usefull feature, as I would know that it was working before I got out of Bed in the morning!! 
M
malcolmX
More than likely your system needs bleeding, if a system has not been bled for a long while you will get a chemical reaction from the various metals in the system IE; copper, brass and mild steel.
What you think is air is actually hydrogen, proven by the smell and if you place a lit match to it, it will flare for a second, try it?
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and set fire to your curtains
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