Whistling radiators

[chiwolf]

Any ideas as to why we are experiencing whistling radiators?

 

[SimonJohns]

The lockshield is causing it or the trv as the rad is closing off.

Sounds like you could do with an automatic bypass being fitted. This should help

 

[chiwolf]

Thanks for that Simon, the boiler (Vaillant thermoCompact) spec indicates auto bypass valve already fitted, shouldn't this take care of things?


TVR's fitted Honeywell vt200 throughout, but whistling only from 2 of the rads.

Thanks again for your response.

 

[stevetheplumber]

there is always some noise as trvs shut down you could try reversing the valves see it it makes any difference
the auto by pass on the boiler is adjustable

 

[chiwolf]

Thanks again, think I'll leave it now until summer gets here and probably do as you suggest placing TRV on return side of rad.

 

[Anton]

Was it like "A Fistful of Dollars" type of whistle?

 

[chiwolf]

No just a constant, I have to get really close to hear it but my wife can hear from across the room.