Water Heater Knocks
Posted by Jim Bond on May 06, 2004 at 15:23:20:
Re: my water heater that "knocks" and "pings" after it kicks on say, after a shower. If it is sediment built up, is that unusual for a water heater that's 2-3 years old? And what's involved in having it flushed? And can harm be done in the meantime, if the sediment, and knocking, remain? Thanks again.

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