Rattling immersion heater.

[RigidRaider]

Yes, our immersion heater rattles when it's switched on. I guess it's some kind of harmonic vibration of the element inside the tube.

Ever seen this before and does it matter?

Oh, it was replaced about 6 months ago.

 

[jeff the gasman]

Probably arcing due to loose connection. Worst that could happen is it burns your house down. Turn it off and check it or get it checked.

 

[Echo the husky]

I've also seen this, though it wasn't making any noise, you could see the threaded cylinder port rocking when the element was on. This was also a new element. The element was swapped again as the movements were quite strong flexing the copper. The second new element was fine.

 

[Dan Robinson]

Yes, our immersion heater rattles when it's switched on. I guess it's some kind of harmonic vibration of the element inside the tube.

Ever seen this before and does it matter?

Oh, it was replaced about 6 months ago.

Element too long for the cylinder and hitting the coil.

 

[Steelmasons]

Tweak immersion boss.

 

[RigidRaider]

Thanks for the advice.