We recently noticed the sound of water running in the pipes even when nothing is turned on.
Intermittent noise in attic after outside water 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.
If there is a water leak that water likely would find its way down there.
Turn off the water supply to your house at the main supply or street level.
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.
The sound can sometimes come and go depending on temperature and humidity levels which makes the belt expand and contract.
Open the lowest faucet it s usually outside or in the basement and let all the water drain out.
Water hammers can also result in a series of smaller bangs in your pipes.
At this point the air will be refilled in the air chambers.
Intermittent or constant squealing points to a misaligned or worn fan belt.
Install water hammer arrestors.
If your boiler is knocking your circulation pump may be on its way out.
Turn the lowest faucet off the one you opened in step 3 and turn the water main back on.
Let the top faucet run until it stops sputtering then turn it off.
A drain piping leak inside of a building cavity can also produce a noise that is hard to track down.
What causes the noise.
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 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.
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.
If you do not find water beneath the location of the dripping sound but the troubling water sound persists conduct a water loss test.
Turn the water back on.
Department of energy suggests placing shims under one side of the radiator to tilt the excess water back toward the pipe or steam trap.
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.
If you don t replace a worn fan belt it will eventually break so you run the risk of not having air.
First make sure the radiator inlet valve is fully open as a partial opening could result in some noise.
Air can become trapped in your pipes due to issues in the water line.
