When my central heating is working I can hear the water going through the
pipes, it sounds like a hissing noise.

It is a combo boiler with mainly 22mm pipework reduced to 15mm for each
radiator.

Is there anything I can do or add to the system to reduce this noise ?

Sam Farrell

On Mon, 26 Mar 2007 18:26:19 +0000, Sam Farrell wrote:

When my central heating is working I can hear the water going through the
pipes, it sounds like a hissing noise.

It is a combo boiler with mainly 22mm pipework reduced to 15mm for each
radiator.

Is there anything I can do or add to the system to reduce this noise ?

Sam Farrell

Quite a bit of the noise may be coming form the TRVs which are now
shutting down.

Turning down the pump in the boiler may make things quieter but may be
any of the following:
1) Contrary to the manufacturers regs.
2) A source of kettling noise in the boiler.
3) Reduce the DHW perforamnce (to an even lower level)




--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html
Gas Fitting Standards Docs he http://www.makewrite.demon.co.uk/GasFittingStandards