5 Common Pipe Noises Explained

noise from water pipesThere’s nothing worse than being jolted awake in the middle of the night by an unexpected bang or hum coming from your walls.

Noisy pipes aren’t just annoying, they can signal real plumbing issues. These sounds can range from minor annoyances to red flags for bigger problems.

Understanding the different noises your pipes make can help you decide if you need to call in a professional or make simple adjustments yourself. Let’s break down the most common sounds and what they mean for your plumbing system.

Key Takeaways:

  • Noisy pipes can indicate serious plumbing problems.
  • Different noises like banging, humming, and gurgling have specific causes.
  • Identifying the cause early can help prevent more costly repairs down the line.
  • Some solutions can be DIY, but others may require a professional plumber.

Understanding Your Plumbing System

Before diving into what those weird noises mean, it helps to have a basic understanding of your plumbing system. Knowing how things are laid out can help you figure out where the noise is coming from and what might be causing it.

Here are the key parts of your plumbing system:

  • Service Line: This connects your house to the city’s main water line. You’ll also find your water meter and shut-off valve here.
  • Sanitary Sewer Line: Responsible for draining wastewater from your home to the main sewer line.
  • Hot Water Heater: Whether you’ve got a conventional, tankless, or hybrid water heater, it’s responsible for heating the cold water that runs through your house.
  • P-traps: These U-shaped pipes under sinks prevent sewer gases from entering your home. They also catch small objects that accidentally fall down the drain.
  • Appliances and Fixtures: Every sink, dishwasher, washing machine, and toilet has a supply line for hot and cold water, plus drainage to remove wastewater.

When strange noises come from any of these parts, it’s important to know why, so you can address the issue before it escalates. Let’s dive into the most common noises and what they mean.

Common Pipe Noises

If you’re hearing odd sounds from your water pipes, you’re not alone. Here’s a rundown of the most frequent offenders.

Banging Noises

That sudden bang you hear when you shut off a faucet? It’s not a ghost. It’s probably water hammer, also known as hydraulic shock.

When water flow stops abruptly, it creates a pressure wave that hits the pipe walls, causing that unmistakable bang. If you hear several smaller bangs, it could be because the pressure isn’t properly regulated in your system.

Another common cause is trapped air bubbles. When air gets trapped in the water line, it can cause banging sounds, especially when you turn a faucet on. You might also hear a bubbling noise as the air is released from the system.

It’s smart to get a professional plumber involved if you hear banging noises, as ignoring them could lead to more significant damage over time.

Humming Sounds

A humming sound coming from your pipes, especially when water is running, usually indicates high water pressure. If the water pressure in your home exceeds 55 pounds per square inch (PSI), your pipes might vibrate, causing a humming noise. Homes with wells are particularly prone to this issue.

Checking your water pressure is a good first step, and if it’s too high, you may need a plumber to adjust it. Running water at high pressure for too long can wear out your pipes, leading to leaks and other costly problems.

Gurgling Noises

drain clearingThat gurgling or “glug-glug” noise you hear from your drains is often the result of a clogged pipe. Water or waste struggles to pass through an obstruction, and the sound you hear is the air bubbles trapped behind the blockage. This could be caused by a buildup of soap scum, dirt, or even plastic items lodged in the pipes.

A plumber can clear out the obstruction, restoring normal water flow and eliminating the gurgling noise. If you let this issue linger, you might be dealing with a more significant clog or even a burst pipe down the road.

Rattling Sounds

If you hear a rattling sound behind your walls, floors, or ceilings, loose fasteners are likely the culprit. Over time, the brackets that hold your pipes in place can come loose, allowing the pipes to shake or rattle as water runs through them.

You’ll want a plumber to inspect and secure the loose pipes before they start knocking against each other or worse, break free completely.

Whistling/Squealing Sounds

High-pitched whistling or squealing sounds often mean that washers or small parts near appliances are worn out. This is common with dishwashers and washing machines. These parts wear out over time, especially in areas with frequent movement or vibrations.

A plumber can check the washers, bolts, and other components near the noisy appliance and replace any worn parts to stop the noise.

Potential Solutions for Noisy Pipes

Addressing noisy pipes early can save you from more extensive repairs later. Here are a few solutions to the most common problems:

Water Hammer Arrestors

If your issue is water hammer, installing a water hammer arrestor can help. These devices absorb the pressure shock that creates those loud bangs, protecting your pipes from the repeated stress of water hammer.

Pressure-Reducing Valves

For homes experiencing high water pressure, a pressure-reducing valve can be installed to bring the pressure back down to a safe level. This not only quiets your pipes but also helps prevent long-term damage from excessive pressure.

Fixing Trapped Air and Airlocks

If trapped air is causing your pipes to bang, venting the system or having a plumber purge the trapped air can solve the problem. Airlocks—large pockets of air in your pipes—can also be cleared by a professional plumber, restoring normal water flow.

Securing Loose Pipes

If loose fasteners are causing pipes to rattle, a plumber will need to secure the pipes properly. This can be a relatively quick fix, but it’s important to act fast before the movement causes more severe damage to your plumbing system.

Regular Maintenance and Inspections

Finally, routine maintenance is your best defense against noisy pipes. Regular inspections can identify loose pipes, airlocks, or high-pressure issues before they become significant problems. Staying proactive can keep your home’s plumbing system running smoothly—and quietly.

Call on Apollo Plumbing for Noisy Pipes

Wrench ManWhile some fixes for noisy pipes can be handled on your own, many of the issues we’ve discussed require a professional’s expertise. That’s where Apollo Plumbing comes in.

We take pride in diagnosing and solving even the trickiest of plumbing problems. Using advanced technology and the skill of our experienced plumbers, we provide lasting solutions that bring you peace of mind.

If you’re in Everett, WA or the surrounding area, we’re here to help. Call us you’ll get your own personal plumber who knows how to quiet those noisy pipes for good.

FAQs

It’s common to have questions about why your pipes are making strange noises. Here are some of the most frequently asked ones:

What causes humming in water pipes?

Humming in water pipes is often due to high water pressure. When the pressure exceeds safe levels, the pipes vibrate, causing that humming sound.

How do I stop my pipes from banging?

Banging pipes often happen due to water hammer or trapped air. You can fix this by installing a water hammer arrestor. Another option is to have a plumber remove the air from your system.

Are noisy pipes dangerous?

Some noises, like rattling or banging, can indicate problems that could lead to more significant issues, such as leaks or bursts. It’s best to get them checked out by a professional.

Why are my pipes whistling?

Whistling sounds are typically caused by worn or loose washers or components near appliances like dishwashers or washing machines.

Can high water pressure damage my pipes?

Yes, running water at excessively high pressure can wear out your pipes over time, leading to leaks or bursts. It’s best to install a pressure-reducing valve to avoid this.

Final Thoughts

Noisy pipes aren’t just an annoyance they can be a sign of deeper issues that need attention. By addressing these problems early, you can prevent more extensive (and expensive) repairs down the line.

If you hear any of these pipe noises, it may be time to call a plumber. A professional plumber, like Apollo Plumbing, can help diagnose and fix the problem. Don’t wait until a small problem becomes a major headache!