CH pipes making noise



Hi All,

I hope someone can help. I have a Vaillant Ecotec Plus combi boiler, the hot water is on mains pressure and the central heating is sealed with no tanks in the loft.

about a month ago the pipes of the central heating started creaking whenever the pump turns on, or after the domestic hot water is turned off in the bathroom/kitchen.

It almost sounds like an expansion/contraction noise that only lasts a second or 2. Is this something to be worried about?

All my radiators have been bled and i have tried lowering and raising the pressure of the CH circuit within the safe/grey band on the pressure guage.

Thanks for your help
Sponsored Links
14 Mar 2010
Reaction score
United Kingdom
Nothing to worry about.As long as your system works ok.Is probably as you say and you could track it down and secure pipe/rad or whatever is causing slight movement.


Thanks gasman, time to start looking for it...

Im just concerned the expansion and contraction will cause a leak to occur, do you think this is likely?
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local