Noisy hot water cylinder

Ashtara · 15 Oct 2016

can anyone help me work out why my hot water cylinder is making crackling noises?

It only happens when hot water is on and only when hot water has reached temperature, not when I first turn it on. As soon as it turns off (on reaching temp) the noise stops

As well as the strange cracking noises, I can hear hissing noises from the pipes nearby and this too only happens after water has been on for a while and is reaching temperature.

This doesn't happen with the central heating so I don't think it is anything to do with the pump but I may be wrong? and I have checked the bleed valve located between 3 port valve and cylinder - no air

Checked f and e tank and no water coming out of pipe that bends over the tank. If I take some water out (with heating having been off for a while) it fills up as usual from the tap bit at the end of the ball cock.

Plumber came and had a look and of course it wouldn't make the noise when he was here as it was at the start of the water heating cycle.

He did notice the thermostat on the cylinder wouldn't turn so he replaced that with a new one but still the noise persists

Any thoughts?

45yearsagasman · 15 Oct 2016

Removed

mcmoby69 · 15 Oct 2016

Ashtara said:
can anyone help me work out why my hot water cylinder is making crackling noises?
Any thoughts?

Yes someone probably can.

1st thought is This shiraz is very nice.

My other thought is , why don't people say please and thank you when they need help on a forum?

JohnD · 15 Oct 2016

limescale?

AGAS · 15 Oct 2016

mcmoby69 said:
Yes someone probably can.

1st thought is This shiraz is very nice.

My other thought is , why don't people say please and thank you when they need help on a forum?

because their ungrateful kn@bs

45yearsagasman · 16 Oct 2016

Ashtara said:
Plumber came and had a look and of course it wouldn't make the noise when he was here as it was at the start of the water heating cycle.

Why not arrange for him to come at the appropriate time?

Ashtara · 16 Oct 2016

Please note I am not an ungrateful kn@b.

In fact I don't even have one

Thank you for all your helpful feedback

AGAS · 16 Oct 2016

dilalio · 16 Oct 2016

Ashtara said:
In fact I don't even have one

It sounds like you have some debris rattling around in the system. Can you upload a video so we can 'hear' it?

HERTS P&D · 16 Oct 2016

Maybe you need someone else with a kn@b to have a look at it.

Andy

Razor900 · 16 Oct 2016

Not quite sure why the ar5ey posts guys??

OP make sure you haven't accidentally turned the immersion on

Ashtara · 16 Oct 2016

Immersion definitely not on.
I have tried to upload a video - hope it works.

If you have nothing constructive to add to this thread, please don't bother.

I have not posted on here to enter into some childish playground banter.

Steelmasons · 16 Oct 2016

Ashtara said:
Please note I am not an ungrateful kn@b.

In fact I don't even have one

Nige F · 16 Oct 2016

Is the boiler very old - maybe floorstanding . Possibly it is "kettling" and the noise is transmitted through the pipes and is audible near the cylinder,can't find a video.

diynot

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Noisy hot water cylinder

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