Your toilet fill valve is faulty: When the fill valve on your toilet isn't functioning as it should, you'll often hear a distinct moan coming from the pipes in the bathroom. To find out if this is the problem, try turning off the water supply to each of the toilets in your home.
A defective refill valve or ballcock in a toilet can cause the noise. Suspect this if the groaning occurs after a toilet is flushed. The noise occurs as the toilet tank is being refilled. The remedy is to replace the valve, which is located at the left inside the toilet tank.
Tighten or Add Pipe Straps: As time goes by, your pipe straps will inevitably loosen, allowing pipes to creak and moan as your water temperature fluctuates. Combat the creaks by either adding additional straps or tightening the existing ones to keep pipes secure.
2) Foghorn
A foghorn sound in your plumbing could be a number of things. It may be a faulty ballcock in the toilet, a loose faucet washer, or a valve in the washing machine. It may also be permeating your entire house, in which case it could be from loose or old pipes or a malfunctioning regulator.
Sometimes, shutting off the pump that distributes water to the affected area will eliminate the humming noise. If that's the case, the pump may have to be changed out for a different model or reset. In some instances, adding isolators and better stabilizing the pump works too (see rattling noises, below).
To make matters worse, loud noises coming from your piping can actually be an indicator of a bad plumbing problem or series of plumbing problems in your pipes. If left untreated, these clogging and drainage issues can become disastrous over time.
If your pipes sound like they're humming, it's likely a water pressure issue. When the water pressure is high, it can cause the water pipes to vibrate and create a humming sound. High water pressure is more common if you have a well for your water, but it can happen with municipal water as well.
Thankfully, this is not a serious plumbing issue, but it is annoying. To fix it, tighten the screws on the faucet or replace the faucet washer. You can pick up a new one at the hardware store. If this stops the sound, you've fixed the issue.
There's air in your pipes: If your pipes make a funny moaning or whining sound when you turn on a faucet, it could mean that there is air caught in your pipes. If this is the case, something is up with your bleed-off system.
There are ways to minimise this type of noise by either insulating the pipes with foam rubber or adjusting the temperature. Contacting a plumber If you are experiencing noise in water pipes and you aren't aware of any work on our network, we recommend contacting a Licensed Plumber.
Cause. Again the cause is due to boiler kettling. The build-up of debris in the heat exchanger affects the flow of the system. The sound typically comes up when the circulating pump is on, so expect it when you are washing the dishes, taking a shower, or flushing the toilet.
Gurgling: A drain gurgling can indicate a blockage or clog. Gurgling from a shower or sink drain after flushing the toilet can mean you have a clogged pipe, the air in your pipes, or a much bigger problem – an issue in the sewer line. Gurgling noises also can be as simple as an incorrectly positioned heating pump.
Air in water pipes will sound like a hiss or pop. Alternatively, the trapped air can cause loud gurgling and prolonged vibrating noises. Other sounds are loud noises and bangs emanating from the pipes; this clearly indicates air traveling in the pipes.
Loose Plumbing Faucet
If this noise comes out every time you turn on a faucet, chances are it's an issue with your faucet washer. When subjected to water, a loose faucet washer can produce as much noise as a foghorn. To try and fix this problem, consider tightening the screws in your faucet system.
The main cause of air in the water lines is water system maintenance. Cutting off the water supply for a period of time can allow air to enter the system. (Running faucets briefly usually resolves this problem.) Maintenance work on the water main may also introduce air into your system.
Drain your pipes and refill them to create new air chambers
To do this, shut off your home's main water valve, then open the highest faucet in your home. Next, turn on the lowest faucet in your home and keep it on until all water has drained. Finally, reopen the main water valve to refill your pipes.
Sometimes both air and water are in the pipes, causing them to vibrate and rattle. You will especially see this in older homes. Also, when pipes expand and contract because of the pipes heating up or cooling down, it can lead to strange noises.
A plumber inserts the hose and nozzle into your pipes and blasts high-pressure water through it to scour out the drain pipes. Not only does this move out clogs, but it also helps to remove hard deposits and hard water minerals. This is one of the most popular and safe ways of unclogging and cleaning out drains.
Turn on both the hot and cold water to about 1/8th of the way on all the faucets. Leave the water running for about two minutes. Start from the lowest faucet in the house to the highest faucet. This allows the water pressure of the system to force all of the air from the pipes and out through the faucets.
Will an airlock clear itself. Even if you run out of water, air should automatically clear in a well-constructed low-pressure water pipe system. The air should naturally climb to the top and discharge as the pipe system fills up.
A lack of free-flowing air within your plumbing venting system can often result in an air lock. Many times you will notice incomplete toilet flushes or a slow-draining sink due to these issues. Trying to resolve these problems on your own is often a challenge.