Why Is My Toilet Humming? (And How to Fix It)

AvatarByLiana Farrell Toilet Queries

Why Is My Toilet Humming?

You’re sitting on the toilet, minding your own business, when you hear it: a faint humming noise. It’s coming from the toilet, and it’s getting louder. You try to ignore it, but it’s impossible. You’re starting to get worried. What could be causing the noise? Is it something serious?

Don’t panic. In most cases, a humming toilet is nothing to be concerned about. It’s usually caused by a simple problem that can be easily fixed. But before you can fix the problem, you need to figure out what’s causing it.

In this article, we’ll take a look at some of the most common causes of humming toilets and how to fix them. We’ll also provide some tips on how to prevent humming toilets in the future.

So if you’re wondering why your toilet is humming, read on for the answers.

Why Is My Toilet Humming?

| Possible Causes | Symptoms | Solutions |
|—|—|—|
| Loose Tank Bolts | The tank bolts may be loose, causing the tank to vibrate and hum. | Tighten the tank bolts. |
| Clogged Drain | A clogged drain can cause the water to back up and hum as it tries to drain. | Clear the clog. |
| Damaged Flush Valve | The flush valve may be damaged, causing it to leak and hum. | Replace the flush valve. |
| Low Water Pressure | Low water pressure can cause the toilet to hum as it tries to fill the tank. | Increase the water pressure. |
| Air in the Lines | Air in the lines can cause the toilet to hum as it tries to flush. | Bleed the air from the lines. |

Causes of Toilet Humming

There are a few possible causes for a humming toilet, including:

  • Loose tank-to-bowl connection. If the bolts that connect the toilet tank to the bowl are loose, they can vibrate against each other and create a humming noise.
  • Running toilet. A running toilet can also cause a humming noise, as the water flowing through the pipes can create a vibration.
  • Air trapped in the toilet bowl. If there is air trapped in the toilet bowl, it can cause the water to swirl and create a humming noise.
  • Damaged toilet parts. Finally, damaged toilet parts, such as a worn-out flapper valve or a cracked tank, can also cause a humming noise.

How to Fix a Humming Toilet

Once you have identified the cause of the humming toilet, you can take steps to fix it.

  • Loose tank-to-bowl connection. To tighten the tank-to-bowl connection, you will need to:

1. Turn off the water supply to the toilet.
2. Remove the caps from the bolts that connect the tank to the bowl.
3. Use a wrench to tighten the bolts.
4. Replace the caps on the bolts.
5. Turn on the water supply to the toilet.

  • Running toilet. To fix a running toilet, you will need to:

1. Turn off the water supply to the toilet.
2. Flush the toilet to empty the tank.
3. Remove the lid from the toilet tank.
4. Locate the flapper valve.
5. Clean the flapper valve and the flush valve seat.
6. Replace the flapper valve if it is damaged.
7. Replace the lid on the toilet tank.
8. Turn on the water supply to the toilet.

  • Air trapped in the toilet bowl. To release trapped air in the toilet bowl, you will need to:

1. Flush the toilet.
2. Wait a few minutes for the water to drain completely.
3. Pour a cup of hot water into the toilet bowl.
4. Flush the toilet again.

  • Damaged toilet parts. If the humming toilet is caused by damaged toilet parts, you will need to replace the damaged parts.

To replace a flapper valve, you will need to:

1. Turn off the water supply to the toilet.
2. Flush the toilet to empty the tank.
3. Remove the lid from the toilet tank.
4. Locate the flapper valve.
5. Remove the old flapper valve.
6. Install the new flapper valve.
7. Replace the lid on the toilet tank.
8. Turn on the water supply to the toilet.

To replace a tank, you will need to:

1. Turn off the water supply to the toilet.
2. Flush the toilet to empty the tank.
3. Remove the lid from the toilet tank.
4. Disconnect the water supply line from the tank.
5. Remove the bolts that attach the tank to the bowl.
6. Lift the tank off the bowl.
7. Install the new tank.
8. Connect the water supply line to the tank.
9. Reconnect the bolts that attach the tank to the bowl.
10. Replace the lid on the toilet tank.
11. Turn on the water supply to the toilet.

A humming toilet can be a nuisance, but it is usually easy to fix. By following the steps in this guide, you can quickly and easily get your toilet humming back to normal.

Why Is My Toilet Humming?

There are a few different reasons why your toilet might be humming. Here are some of the most common causes:

  • A loose tank lid: The most common cause of a humming toilet is a loose tank lid. When the lid is not properly secured, it can vibrate against the tank and create a humming noise. To fix this problem, simply tighten the screws on the tank lid until it is snug.
  • A faulty flapper: The flapper is a rubber disk that seals the hole in the bottom of the tank when the toilet is flushed. If the flapper is worn out or damaged, it can leak water into the bowl and create a humming noise. To fix this problem, you will need to replace the flapper.
  • A clogged toilet: A clogged toilet can also cause a humming noise. When the toilet is flushed, the water level in the tank drops suddenly. This can create a suction that pulls air through the clogged drain and creates a humming noise. To fix this problem, you will need to unclog the toilet.
  • A faulty fill valve: The fill valve is a valve that controls the flow of water into the tank. If the fill valve is not working properly, it can cause the tank to fill too quickly or not fill at all. This can create a humming noise as the water level in the tank changes. To fix this problem, you will need to replace the fill valve.

How to Fix a Humming Toilet

If you think your toilet is humming because of a loose tank lid, you can fix the problem yourself by following these steps:

1. Turn off the water supply to the toilet. This is usually located under the sink or in the basement.
2. Remove the tank lid by lifting it up and off of the tank.
3. Tighten the screws on the tank lid until they are snug.
4. Turn the water supply back on to the toilet.

If you think your toilet is humming because of a faulty flapper, you can fix the problem yourself by following these steps:

1. Turn off the water supply to the toilet.
2. Remove the tank lid by lifting it up and off of the tank.
3. Locate the flapper. It is a rubber disk that seals the hole in the bottom of the tank.
4. Remove the old flapper by carefully prying it up with a screwdriver.
5. Insert the new flapper into the hole in the bottom of the tank.
6. Secure the new flapper in place with the screws that were removed from the old flapper.
7. Turn the water supply back on to the toilet.

If you think your toilet is humming because of a clogged toilet, you can fix the problem yourself by following these steps:

1. Turn off the water supply to the toilet.
2. Remove the toilet bowl lid by lifting it up and off of the bowl.
3. Use a plunger to try to unclog the toilet.
4. If the plunger does not work, you may need to use a snake to unclog the toilet.
5. Once the toilet is unclogged, flush the toilet and turn the water supply back on.

If you think your toilet is humming because of a faulty fill valve, you can fix the problem yourself by following these steps:

1. Turn off the water supply to the toilet.
2. Remove the tank lid by lifting it up and off of the tank.
3. Locate the fill valve. It is a valve that is located on the side of the tank.
4. Remove the old fill valve by turning it counterclockwise.
5. Insert the new fill valve into the hole in the side of the tank.
6. Turn the new fill valve clockwise to secure it in place.
7. Turn the water supply back on to the toilet.

When to Call a Plumber

If you have tried to fix the humming toilet yourself and you are still having problems, it is time to call a plumber. A plumber can diagnose the problem and fix it quickly and efficiently.

Here are some signs that you should call a plumber:

  • You can’t find the cause of the humming.
  • You’re not comfortable trying to fix the humming yourself.
  • The humming is getting worse.

Preventing Toilet Humming

You can prevent your toilet from humming by following these tips:

  • Keep the tank clean. A dirty tank can cause the flapper to stick and create a humming noise.
  • Inspect the toilet regularly. Look for cracks or leaks that could be causing the humming.
  • Replace old

    Why is my toilet humming?

There are a few possible reasons why your toilet might be humming.

  • A loose or damaged flapper: The flapper is a rubber disk that seals the opening to the toilet bowl when the toilet is flushed. If the flapper is loose or damaged, it can allow air to leak into the toilet bowl, which can cause a humming noise. To fix this, you can try tightening the flapper or replacing it altogether.
  • A clogged toilet: A clogged toilet can also cause a humming noise. When the toilet is flushed, the water can’t drain properly, which can create a vacuum that causes the toilet to hum. To fix this, you will need to clear the clog.
  • A faulty fill valve: The fill valve is a valve that controls the amount of water that flows into the toilet tank. If the fill valve is faulty, it can cause the toilet to hum. To fix this, you will need to replace the fill valve.
  • A faulty flush valve: The flush valve is a valve that controls the flow of water from the toilet tank to the toilet bowl. If the flush valve is faulty, it can cause the toilet to hum. To fix this, you will need to replace the flush valve.

How can I fix a humming toilet?

Once you have determined the cause of the humming noise, you can take steps to fix it.

  • To fix a loose or damaged flapper:

1. Turn off the water supply to the toilet.
2. Remove the toilet tank lid.
3. Locate the flapper and inspect it for damage.
4. If the flapper is damaged, replace it with a new one.
5. Reattach the toilet tank lid.
6. Turn the water supply back on to the toilet.

  • To fix a clogged toilet:

1. Turn off the water supply to the toilet.
2. Remove the toilet tank lid.
3. Use a plunger to clear the clog.
4. Reattach the toilet tank lid.
5. Turn the water supply back on to the toilet.

  • To fix a faulty fill valve:

1. Turn off the water supply to the toilet.
2. Remove the toilet tank lid.
3. Locate the fill valve and inspect it for damage.
4. If the fill valve is faulty, replace it with a new one.
5. Reattach the toilet tank lid.
6. Turn the water supply back on to the toilet.

  • To fix a faulty flush valve:

1. Turn off the water supply to the toilet.
2. Remove the toilet tank lid.
3. Locate the flush valve and inspect it for damage.
4. If the flush valve is faulty, replace it with a new one.
5. Reattach the toilet tank lid.
6. Turn the water supply back on to the toilet.

How can I prevent my toilet from humming in the future?

There are a few things you can do to prevent your toilet from humming in the future.

  • Keep your toilet clean and free of clogs. A clogged toilet can cause a humming noise. To prevent this, make sure to flush the toilet regularly and clean it as needed.
  • Inspect your toilet regularly for damage. If you notice any damage to your toilet, such as a loose or damaged flapper, have it repaired or replaced as soon as possible.
  • Use a high-quality toilet fill valve and flush valve. A faulty fill valve or flush valve can cause a humming noise. To prevent this, use a high-quality valve that is designed to fit your toilet.

By following these tips, you can help keep your toilet humming-free.

:

there are a few reasons why your toilet might be humming. It could be due to a loose or damaged flapper, a faulty fill valve, or a problem with the water supply line. If you can’t identify the source of the humming, it’s best to call a plumber to take a look.

Here are some key takeaways to remember:

  • A loose or damaged flapper can cause your toilet to hum because it’s not sealing properly.
  • A faulty fill valve can also cause humming because it’s not allowing the water to flow into the tank properly.
  • A problem with the water supply line can cause humming because it’s not providing enough water to the tank.

If you’re able to identify the source of the humming, you can usually fix it yourself by replacing the damaged part. However, if you’re not comfortable doing this, it’s best to call a plumber to take a look.

Author Profile

Liana Farrell
Liana Farrell
Liana Farrell is the owner of toiletty.com. She is a mom of two and is very passionate about home improvement.

Liana has ten years of home improvement experience, and in her own words, she said: “I love improving the home, and I’m very passionate about keeping the home in the best possible condition. I love it!”

Liana Farrell balances beauty and functionality when she goes about her home improvement jobs.