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Why Is My Shark Vacuum Making a Loud Suction Noise?

The loud suction noise coming from your shark vacuum can be annoying and indicates potential problems with the machine. Understanding the cause of this noise can help you better manage the problem and ensure that your vacuum cleaner continues to work properly.

 One of the most common causes of loud scratch noise is the blockage or obstruction of airflow to the air duct. Over time, dirt, debris, and hair can accumulate in various vacuum areas such as hose, brush roller, and filters.

When these materials are blocked, airflow is restricted, increasing leak noise as the vacuum works more to trap air To prevent this, it is crucial to inspect and clean these materials regularly and remove any accumulated debris that could block the airway. 

Ensuring proper maintenance can not only eliminate noise but also improve the efficiency of the vacuum.

 Here’s why your shark vacuum making a loud suction noise:

5 Reasons Your Shark Vacuum Making a Loud Suction Noise

 If your Shark vacuum makes a loud sucking noise, there can be several possible causes for this issue. Understanding these underlying factors can help diagnose and properly address the problem, ensuring your vacuum cleaner performs properly.

Blockages Within the Vacuum System

One of the most common causes of loud leak noise is blocked air inlets. Over time, dirt, debris, and lint can accumulate in vacuum tubes, the brush roller, and other items. When these channels are blocked, the vacuum’s motor has to work harder to get air in, increasing the noise level. 

To avoid this problem, check and clear any obstructions regularly to restore adequate ventilation and reduce noise levels.

Filters That Are Dirty or Damaged

The Filter plays an important role in trapping dust and allergens, ensuring that fresh air is returned to your surroundings As a filter is dirty or clogged, the air filter may be damaged, increasing suction noise. 

You should clean the filter regularly to avoid any damage.

Malfunctioning or Broken fan

The fan in the vacuum helps to create the suction needed for a thorough cleaning. If fan lines are broken or damaged, The air imbalance and operating noise level can increase.

You should inspect the fan for damage and replace the suction if necessary to reduce the noise.

Brush Roll That Is Dirty or in Poor Condition

The brush roll in your Shark vacuum is disturbed and collects debris from various sources. If the brush roll is dirty, clogged, or damaged, the vacuum can make a lot of noise during use. 

You should clean the brush roll regularly and make sure it is in good condition for quiet and efficient operation.

 Worn-out or Damaged Motor

The motor is the heart of your vacuum, and over time it can wear out from heavy use. A damaged motor can struggle to maintain a constant thrust, increasing the noise level as it struggles to operate.

 If you suspect the motor is causing the noise, it is best to contact the manufacturer’s customer support or a professional mechanic for diagnosis and possibly replacement. Try not to fix it yourself as it will damage it even more.

Solution to Different Types of Noise a Shark Vacuum Makes

Shark Vacuum Loud Grinding Noise

Loud noise coming from your Shark vacuum can indicate serious mechanical problems. Here is how to solve the problem.

How to fix:

Inspect the Brush Roll and Agitator:

 Inspect the brush roll and agitator for obstructions or debris that could cause a grinding noise.

Sometimes tangled hair strands and small particles can get stuck and result in grinding noise.

Belt inspection:

 A worn or damaged belt can cause a grinding noise. Turn off the vacuum and unplug. Reach where the brush roll is and inspect the belt. If damaged, stretched, or damaged, replace with a matching belt according to the manufacturer’s instructions.

Check for blockages: 

Check the hose, rods, and other parts of the vacuum for blockages or blockages that could block the flow of fresh air. These obstructions can disturb the motor and cause a grinding noise.

Inspect the Fan: 

A damaged or malfunctioning fan can cause a grinding noise. Carefully inspect the fan blades for signs of wear or misalignment. 

Seek Professional Help:

 If the grinding noise persists despite your best efforts, it is recommended that you contact Shark customer support or a technician. A grinding noise can indicate serious mechanical problems that require specialized expertise for proper repair.

Vacuum Rattling Noise

The rattling sound from your vacuum can be caused by loose parts or debris. Here is how to solve the problem.

How to fix:

Tighten Loose Parts: 

Check all removable parts such as the filter, brush roll, and attachments. Make sure it is securely attached and securely installed. Loose parts can cause vibration resulting in a rattling noise. 

Check for Debris:

Small particles embedded in a vacuum’s components can cause a rattling noise. Carefully shake or tap the vacuum gently to remove loose debris.

If the rattling sound continues then fix the parts of your vacuum properly. 

Check for Damage: 

Check the outside of the vacuum for any visible damage that could be causing the buzzing noise. If there is no visible damage then contact a technician.

Check for Proper Assembly: 

If you have disassembled the vacuum for maintenance or repair, make sure that all parts are properly reassembled. Incorrect alignment can cause a rattling sound.

Shark Vacuum Whistling Noise

Whistling can be very troublesome and often indicates ventilation issues. Here’s how to fix it:

How to fix:

Check for Air Leaks:

 The vacuum’s seal connections often produce a whistle due to air leaks. Inspect all seals, gaskets, and connections to ensure proper seating and intact conditions. If the whistling noise continues then ask a technician for help.

Check Hose and Attachments: 

If there are gaps or cracks in the hose and attachments, a horn can occur. Bend the hose and check for damage, making sure the fittings are securely connected.

 Check Vacuum Cleaner and Dust Bag: 

An inappropriate vacuum cleaner or dust bag can sound like a horn. Make sure these items are properly positioned and locked.

Replacing Damaged Parts:

Whistling noise may occur due to damaged seals, gaskets, or tubes, replace them with genuine replacement Shark parts. If you will use local parts then it may not work properly.

Vacuum High-Pitched Noise

Loud noise indicates motor or ventilation problems. Here’s how to fix it:

How to fix:

Check the Filter and Vents:

 As with other noise problems, loud noise can be caused by a clogged filter or clogged airflow. Clean or replace the filter as necessary and ensure airflow is not blocked.

Check Motor Bearings:

 Loud noise can cause damage to motor bearings. If the noise is coming from the source of the equipment, a professional technician should be consulted for inspection and possibly replacement of the equipment. 

Verify the Power Source:

 Sometimes an unstable power source can cause unusual noise. Make sure your vacuum is plugged into a solid electrical outlet to avoid possible electrical issues. 

In my opinion, if the loud noise persists after basic troubleshooting, it is best to contact Shark customer support or a qualified technician for further diagnosis and repair.

How To Reduce High Pitch Noise of a Shark Vacuum Cleaner?

Check the Height

Improper height adjustment in the brush head of the vacuum can cause excessive noise. Make sure the brush head is set at the correct height for the type of floor you are cleaning. Incorrect height settings can increase friction and noise.

Examine the Brush Head

Inspect the brush head for any obstructions, such as tangled hair or dirt. Clearing these obstructions prevents unnecessary brush roll noise.

Empty Your Dustbin

A full trash can damages the air and increases noise. Regularly empty the trash can when it is about half full to allow adequate ventilation and reduce noise.

Test It Without the Hose

Disconnect the hose and other connectors to see if the noise persists. If the noise is significantly reduced without the duct, it may indicate a blockage or restriction in the duct that needs to be cleared.

Look For Cracks

Inspect the components of the vacuum for cracks or damage that could cause a loud noise. Worn parts, such as nozzles or chambers, can cause abnormal sounds during operation.

Consider an Aging Motor

If your Shark vacuum is very old, the motor will show signs of wear. An old motor makes an unusual grinding noise. If this happens, you may need to consider replacing the motor or the entire vacuum.


1. What is the Noise level of a Shark vacuum?

The noise level of a shark vacuum can vary depending on the specific model, design, and technology used. However, most shark vacuum cleaners are generally between 65 and 80 decibels (dB) during operation.

The approximate noise level of a typical sound to give you some context. 

  • Normal conversation: 60-70 dB
  • Vacuum cleaner (typical): 70-80 dB 
  • City traffic (moderate): 80-85 dB
2. Why is Shark Hoover making a loud noise and no suction?

If your shark vacuum is making a loud noise but there is no suction then it could be because of several issues such as 

  • Clogs or Blockages
  • Dirty Filter
  • Brush Roll
  • Belt Issues
  • Leakage or Sealing Issues

You can resolve these issues by yourself if you are an expert otherwise you should seek help from a technician and keep proper maintenance.


If your shark vacuum is making a loud suction noise then there can be many reasons. The main reason is a damaged filter and blocked airflow. Blocked airflow can force the vacuum to work harder and then it will produce loud noise.

Another possibility is that the filter is clogged, a dirty filter can also block the airflow and the vacuum will not work properly. Leaks can cause more trouble in drying and make a very loud suction noise.

To avoid these problems you should regularly clean your filter, use it carefully, and follow the user guide for proper assistance. Proper maintenance is very necessary for every machine.

If you are having major issues such as worn-out motors or battery disorders then it is better to ask for help from a technician or a professional to avoid other problems. 

Callum Stokes is a renowned house cleaning expert with over a decade of experience in the industry. As a lead writer for, he shares invaluable insights on innovative cleaning solutions and the latest vacuum technologies.

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