My central heating sounds like it is on when it isn’t

[Hollie]

I have a conventional heating system. Had boiler replaced last August and since then my heating has made a humming noise - even when it is off. Had British Gas come go look at it but couldn’t hear it. I asked if it may be something to do with tanks in loft, but he said no and wouldn’t even go and have a look. A few weeks after I noticed that there was no humming. Eight weeks later I find bedroom carpet wet and water coming down the wall ruining wallpaper. I went up into the loft and water was dripping from tank and things nearby soaking wet. Got British Gas in again and they said ballcock needed replacing - which they did. The next day humming came back and once again heating sounds as if it is on when it is not. Any ideas please?

 

[Chuck]

Does the noise stop if you cut the power to the boiler?

 

[Hollie]

Hi. No it still hums

 

[Chuck]

What about if you turn your water off at the stopcock?

Does your system have a pump that is external to the boiler. If so, is that responsible for the humming?

 

[Hollie]

What about if you turn your water off at the stopcock?

Does your system have a pump that is external to the boiler. If so, is that responsible for the humming?

Thank you so much for your reply

Just turned water off at stopcock - noise still there.

The pump is in the airing cupboard but no noise coming from it. British Gas came a few months ago and said it was not the pump (think they tested it with something)

 

[Aquarius]

Any idea where noise is loudest?

 

[Hollie]

Any idea where noise is loudest?

Just had a walk around the house and it is about the same in all the rooms

 

[Chuck]

Just had a walk around the house and it is about the same in all the rooms

How does it change if you block your ears with your fingers?

What makes you think that it is your heating that is responsible?

Is the house detached or semi-detached?

If you go outside at a quiet time can you still hear it?

 

[Aquarius]

If the noise is still evident when boiler off and water off, then I’d say it’s something else.

 

[Murdoch]

Maybe find a local heating engineer to come and take a look? and a young child / teenager as they have better hearing than the most of us - so maybe they could pin point the source

And are you detached, semi, terrace flat? sound travels through buildings further than you imagine