DIY Doctor UK DIY Forums

When my hot water heats up there is an amazing amount of banging and clanging through the house. This happens randomly until the hot water goes off. I had a plumber out who changed the ball valve but still keeps doing it, unfortunately when the plumber was round it didn't make a sound!!!! Someone else was talking about a hammer? something?...I am a female and unfort have absolutely no idea about plumbing, also I would like an idea of what it could be as I don't want to have to keep paying call out charges each time.
Thank you.

When the water is heating - it is more likely to be the boiler kettling, or pipes may need to be clipped and lagged. Do you live in a hard water area ? does the noise seem to be coming from the boiler, or pipework from the boiler ?

Water hammer occurs when you run a tap, or the ball valve is filling the tank and the pipes vibrate or bang.

htg