Discuss Central heating pipes whistle when heating not being used in the Plumbing Jobs | The Job-board area at PlumbersForums.net
Very loud can be heard any room in my flat, wakes me during the night sometimes.How loud is this whistle?
If it is a flat, how do you know it is being caused by your heating?
Could it not be resonating through your Heating pipes but originating elsewhere?
Maybe when your Heating is on, the vibration is enough to alter the sound or even prevent it.
I am guessing because I have not heard it obviously but just thought I would ask if that might be possible. It might make you think outside the box a bit too.
Drain the heating system
See if it stops[/QUOTE
I have done that Scott ,it went away for 2 days then came back.
Nope. The OP has stated the noise continues when the radiator is removed, and UK systems do not have a vacuum when cold (unless it is a very unusual system). Also very rare to find sectional radiators these days.One of the radiator sections has a bad seal. When the system cools it is pulling a vacuum and sucking air into the radiator. When it heats up the vacuum stops. It doesnt leak water because the caulking swells and amy moistureevaporates leaving no trace.
Next time you hear it take some oil paint and paint the cracks where the sections come together. Then it should suck in the paint and seal itself.
What we would call injector tees (or swept) on a one pipe system ?Here we have monoflo tees which sort of scoop some water from the heat pipe and sends it off to the line for the radiator which in turn ends up in another specially designed tee fitting to dump it back into the main heat loop.
Right, I forgot you guys have what we would call atmospherically vented systems. We too have one piece cast iron radiators but most modern residential radiators sold here are sectional.
Is the whistling air or water? Here we have monoflo tees which sort of scoop some water from the heat pipe and sends it off to the line for the radiator which in turn ends up in another specially designed tee fitting to dump it back into the main heat loop.
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