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Warning: your hot water tap is screaming for help! discover the reason why

Rob is a seasoned home improvement writer with over 15 years of experience researching and recommending products for the home. Prior to starting Nurturing Homeaid, he wrote extensively for This Old House magazine and has been featured as a home expert on several TV and radio programs. An avid DIY-er,...

What To Know

  • This can be a problem if you have a lot of fixtures in your home that use hot water, or if you have a water softener that is not properly sized.
  • If the noise is caused by air in the pipes, you can try to bleed the air out of the system.
  • If the noise is caused by the water temperature, you can try to lower the temperature of the water heater.

When you turn on the hot water tap, you may notice a strange noise coming from the pipes. This can be a frustrating and annoying problem, but it’s important to know that it’s usually not a sign of a serious issue. In most cases, the noise is caused by one of the following factors:

Water Hammer

Water hammer is the most common cause of noise in hot water pipes. It occurs when water flowing through the pipes is suddenly stopped, causing a shockwave that travels through the pipes and produces a banging or hammering sound. This can happen when you turn off the hot water tap quickly, or when a dishwasher or washing machine stops filling.

Loose Pipes

Loose pipes can also cause noise in hot water pipes. When the pipes are not properly secured, they can vibrate when water flows through them, creating a rattling or banging sound. This can be especially noticeable in older homes where the pipes have become loose over time.

Air in the Pipes

Air in the pipes can also cause noise, especially when it’s trapped in a high point in the system. When the hot water flows through the pipes, it can push the air ahead of it, creating a gurgling or bubbling sound. This can be a temporary problem that resolves itself over time, or it can be a sign of a more serious issue, such as a leak.

Water Temperature

The temperature of the water can also affect the noise level in hot water pipes. When the water is very hot, it can expand and cause the pipes to expand as well. This can put stress on the pipes and cause them to make noise.

Pipe Size

The size of the pipes can also affect the noise level. Smaller pipes are more likely to make noise than larger pipes, because they have less space for the water to flow through. This can be a problem in older homes where the pipes were originally sized for a smaller demand for hot water.

Water Pressure

The water pressure in your home can also affect the noise level in hot water pipes. If the water pressure is too high, it can cause the pipes to vibrate and make noise. This can be a problem if you have a lot of fixtures in your home that use hot water, or if you have a water softener that is not properly sized.

How to Fix the Noise

In most cases, the noise in hot water pipes can be fixed by addressing the underlying cause. Here are a few tips:

  • Water hammer: If the noise is caused by water hammer, you can try to reduce the water pressure in your home. This can be done by installing a water pressure regulator. You can also try to turn off the hot water tap more slowly to reduce the shockwave that causes the noise.
  • Loose pipes: If the noise is caused by loose pipes, you can try to tighten them. You may need to use a wrench or pliers to do this. If the pipes are very loose, you may need to call a plumber to have them repaired.
  • Air in the pipes: If the noise is caused by air in the pipes, you can try to bleed the air out of the system. To do this, open the highest faucet in your home and let the water run until the air is gone. You may need to do this several times to remove all of the air from the system.
  • Water temperature: If the noise is caused by the water temperature, you can try to lower the temperature of the water heater. This will reduce the amount of expansion in the pipes and may reduce the noise.
  • Pipe size: If the noise is caused by the pipe size, you may need to have the pipes replaced with larger ones. This is a more expensive solution, but it may be the only way to permanently fix the problem.
  • Water pressure: If the noise is caused by the water pressure, you can try to install a water pressure regulator. This will reduce the water pressure in your home and may reduce the noise.

Recommendations: Why Hot Water Tap Makes Noise

If you’re experiencing noise in your hot water pipes, don’t worry, it’s usually not a sign of a serious problem. In most cases, the noise can be fixed by addressing the underlying cause. By following the tips in this guide, you can quickly and easily fix the noise and enjoy a peaceful home.

Frequently Discussed Topics

Q: Why does my hot water tap make a banging noise?
A: The banging noise is most likely caused by water hammer. This occurs when water flowing through the pipes is suddenly stopped, causing a shockwave that travels through the pipes and produces a banging or hammering sound.

Q: Why does my hot water tap make a rattling noise?
A: The rattling noise is most likely caused by loose pipes. When the pipes are not properly secured, they can vibrate when water flows through them, creating a rattling or banging sound.

Q: Why does my hot water tap make a gurgling noise?
A: The gurgling noise is most likely caused by air in the pipes. When the hot water flows through the pipes, it can push the air ahead of it, creating a gurgling or bubbling sound.

Rob Sanders

Rob is a seasoned home improvement writer with over 15 years of experience researching and recommending products for the home. Prior to starting Nurturing Homeaid, he wrote extensively for This Old House magazine and has been featured as a home expert on several TV and radio programs. An avid DIY-er, Rob takes pride in testing out the latest tools and gadgets to see how they can make home projects easier. When it comes to heating systems, he's evaluated over 50 different furnace and boiler models over the years. Rob founded Nurturing Homeaid with his business partner Jim in 2020 to provide homeowners with genuine product recommendations they can trust. In his free time, Rob enjoys remodeling old homes with his family and traveling to visit architectural landmarks across the country. He holds a bachelor's degree in Journalism from Syracuse University.
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