CH pipes making noise

[nig0609]

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

 

[45yearsagasman]

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.

 

[nig0609]

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?

 

[Morris40]

Very, Very unlikely,

 

[nig0609]

Excellent, thanks guys.