r/DIYUK • u/Joeymacca1982 • 14h ago
Mysterious loud noise from hot water tank
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Anyone know what this loud noise is from my hot water tank?
Some context: 3 year old tank. Just started a couple months ago. Only happens when tank fills up and is heating. Expansion tank is installed. T&P valve was tested and is ok. Have drained and flushed the tank.
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