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Question DetailsAsked on 5/1/2011

How to quiet plumbing equipment

I just moved into my 3 yr old home in Mar 09.  I was told that there was a new legally required piece of (?) equipment on the plumbing in the basement.  It goes off whenever it feels like it and makes a sound like a toilet flushing.  My basement isn’t finished yet, and the noise is quite loud.  In fact, visitors call it to my attention, thinking there’s a problem.  Any idea on how to make it less noisy?

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1 Answer


Unless you have a sump pump or a sewage lift pump, this does NOT sound normal. If you use the Answer Question button to give more details on what this device looks like, is it discharging water, what device is it mounted on, etc then we can give you a better idea.

If not a sump pump (in a pit in the basement floor to pump out groundwater to keep basement from flooding) or a sewage lift pump (because your house is below the level of the street sewers), then the only other thing I can think of is the pressure relief valve on the furnace/boiler or hot water heater, which would mean they are either over-pressuring or over-heating so causing the safety valve on the side to open (which would dump out some hot water), which would be bad and would mean something is wrong.

If you want immediate attention to it rather than wait for an answer here, call a plumber to look at it and explain it to you. He could also install some foam insulation and padding to quiet down if it is sump pump or sewage lift pump working, though normally they are not as loud as a toilet - more like the dishwasher humming away.

Answered 7 years ago by LCD

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