We checked through the house the noise stops when the main water line is off and when the hot water is off so we figure it is the cold water line somewhere.
Intermittent noise in attic after outside water turned on.
A drain piping leak inside of a building cavity can also produce a noise that is hard to track down.
Turn off the water supply to your house at the main supply or street level.
What causes the noise.
If you see water or water damage call a plumber immediately or a roofer if the water dripping sounds occur only when it is raining and or when there is ice or snow on the roof.
The incoming water will flush the air out of the pipes but not out of the vertical air chamber where the air supply has been restored.
Intermittent or constant squealing points to a misaligned or worn fan belt.
If you re still stumped i would turn off the house s water and check for visible water damage throughout the home and look for water pooling in the yard around the outside of the house or in.
Supply pipe leaks may be continuous and thus are eventually discovered by water stains or mold or intermittent such as a leak around a tub or shower control that drips into the wall cavity only when the valve is turned on.
Install water hammer arrestors.
Air can become trapped in your pipes due to issues in the water line.
If the sound continues the u s.
At this point the air will be refilled in the air chambers.
We recently noticed the sound of water running in the pipes even when nothing is turned on.
The water that was rushing toward that exit has a high amount of momentum and when it meets the closed valve causes a loud bang.
As hot water flows through a cold metal or plastic pipe a process of expansion can cause a rapid ticking sound for approximately 45 seconds followed by slower intermittent ticking as the pipe.
If your boiler is knocking your circulation pump may be on its way out.
Turn the water back on.
The sound can sometimes come and go depending on temperature and humidity levels which makes the belt expand and contract.
If there is a water leak that water likely would find its way down there.
If you don t replace a worn fan belt it will eventually break so you run the risk of not having air.
Let the top faucet run until it stops sputtering then turn it off.
First make sure the radiator inlet valve is fully open as a partial opening could result in some noise.
Open your faucets to drain all of the water from your plumbing system.
Water hammers can also result in a series of smaller bangs in your pipes.
Turn the lowest faucet off the one you opened in step 3 and turn the water main back on.
