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Is this dangerous? We purchased a new washer (house is around 17 years old) and when the water clearly cuts off suddenly (it's one of those fill then check then fill washers) it makes a loud noise.

Is this something to be concerned about long term? Surely this isn't an uncommon problem?

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Some washers evidently have soft close valves that reduce water hammer. But if yours does not, then you can get water hammer arrestors. Watts mini water hammer arrestors There are other designs that might fit your faucets better. I wonder if there is an adjustment on your washing machine to soften the closure of the valves. We don't have any significant water hammer from our washing machines.

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  • How dangerous do you think it would be without getting hammer arrestors?
    – msmith1114
    Apr 21, 2018 at 20:25
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    It may damage the pipes over time. Water hammer arrestors come in various designs.
    – Jim Stewart
    Apr 21, 2018 at 22:22

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