Showerhead drips off and on occasionally during the night

4 year old american standard shower *single handle" faucet with shower head in shower stall. The dang thing out of the blue just starts dripping in the middle of the night for a short blast and then stops again. Is the likely just the washer in the faucet or might it be something in the shower head?
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TN wrote:

Shower monster is getting a drink.
Lou
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LouB wrote:

Probably need an expansion tank on the water heater.
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Oh, don't say that. He'll have nightmares for years.
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No, it's the municipal water pressure. In the middle of the night nobody is using much water, so the pressure goes up.
You should have a regulator installed at the water meter before something blows up.
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snipped-for-privacy@rochester.rr.com wrote:

Learned something.
Thanks
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Maybe both Extrol tank, and also regulator. Of course, you could always leave the faucet dripping in the cellar sink. Or do what I do, get up and use the potty a couple times every night, and remember to flush.
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