How to Determine Vacuum Suction Power

Want to know how to determine vacuum suction power? Well, you have come to the right place. To learn how to diagnose vacuum suction power, stay focused and read the article at the end.

There is no better alternative to a vacuum cleaner with powerful suction to keep the house hygiene. Before buying a vacuum cleaner, you must know the technique of determining the suction power. Because a vacuum cleaner that has less suction power makes your home dirty every time. Therefore, it is important to test the suction capacity of your cleaner to get good and efficient results.

The purpose of today’s article is to show you how easy it is to calculate the suction power of a vacuum cleaner. Let’s explore the article in depth.

What is Vacuum Suction Power?

Before determining the suction power of a vacuum cleaner, you should know what is meant by vacuum suction power. Vacuum suction power refers to the difference in pressure between the inside and outside of a vacuum cleaner.

The purpose of using a vacuum cleaner is to thoroughly clean dirt from the floor or any surface. For this, it uses a motor to collect the dirt particles in a chamber. Thus the force required to produce the maximum pressure difference of the motor is called the suction power of the vacuum.

How to Determine Vacuum Suction Power

A strong supply can measure the suction power of the motor. The higher the power supply, the greater the suction power. In this regard, it is advisable to use vacuum cleaners with high suction power to clean the house. Here we are highlighting the ways to determine the suction power of any vacuum cleaner.

Static Pressure

To measure the suction power of a vacuum you can use the water lift method known as static pressure. Although, this is a classic experiment but effective. There are a few steps to follow. They are as follows:

  • Attach a vertical tube with some water.
  • Then put your hose to the top of the vacuum. When you see that the water is rising at a high rate, you’ll understand that the vacuum suction power is good enough.
  • Now check at what height the amount of water has increased. Calculate it in inches. However, the suction calculation reaches up to 85 inches.


Watt is a common technique for determining the power supply of a vacuum cleaner. Wattage is the unit for determining the power of an electric motor. In vacuum cleaners, wattage defines how much energy the product needs to run. For commercial usage, the vacuum cleaner consumes between 1000-4000 watts of power. Nonetheless, in contrast to commercial cleaning, home vacuum devices consume between 1000-1500 watts of power. But total motor power watts are different from suction power watts.

Instead, calculating vacuum suction power in watts does not mean that it will give you an idea of ​​the performance and power of the motor. It is only beneficial for calculating the power supply.

Airflow or CFM

A well-known way to calculate cubic feet per minute or CFM airflow. Besides, there is a profound affiliation between the calculations of the suction power of airflow. CFM explains how much cubic feet of air per minute can be substituted in a vacuum. Mostly, it helps to determine the method of carrying dirt. It goes without saying that the higher the value of CFM in a vacuum, the more suction power will be.

Typically, CFM is zero when closed and up to a maximum of 2 inches when open. Still, it is advisable to increase the CFM as the air opening size grows. So the better the CFM of the vacuum cleaner, the clearer it will be. Anyway, a vacuum of 100 CFM or more is considered a good suction.


Presently, amps are the most widely used way of determining vacuum suction power compared to wattage. And its vacuum suction varies when it receives energy. Amps are the input power of a vacuum cleaner. It is the unit for measuring energy consumption.

However, it is not a usual vacuum cleaner as it is due to power loss. In the United States, most vacuum devices measure input current in amperes. The standard range of these amps is 5 to 12 amps. If someone wants to get wattage, he has to multiply the value of amps by the line voltage and it is 120 volts. Example: amps * 120 volts = watts.


Pascal is another aesthetic way to measure the suction power of a vacuum. As we said earlier, vacuum suction pressure is the result of the maximum pressure difference between the inside and outside of the cleaner. And Pascal is the measure of that pressure which is equal to the pressure of 1-Newton force per square meter. The family vacuum cleaner can create a pressure of 20 kilopascals.

Note that the higher the suction pressure, the easier and more efficient the vacuum cleaner will work. This means that powerful vacuum cleaners have higher suction pressure. Note that it is inversely proportional to the airflow specification. For example, an expensive vacuum cleaner accomplishes high airflow but has low suction power.

Sealed Suction

Sealed suction is an experiment to measure the power of a vacuum cleaner. For this, fill a pot with water. Now see if the water level is rising. If the water level rises then it must be understood that its suction power is high. And this is an easy and simple way to test the suction power of any vacuum cleaner.

Some Key Aspects that Influence the Vacuum Suction Power

Determining the suction power of a vacuum cleaner has some key aspects that influence when measuring. They are such

  • Without a proper filter setup, the suction power of the vacuum cleaner will decrease. Because a filter is something that affects the performance of a vacuum.
  • When measuring suction power, vacuum cleaner extensions and design will vary.
  • Moreover, vacuum suction power can affect the quality of the motor as it is an important tool in a vacuum cleaner.


The vacuum cleaner is a modern invention that helps in cleaning incredibly. Perfect cleaning with amazing suction technology will allow you to clean all the dirt in your home. So before buying a vacuum cleaner, you must check its suction power. For that, you can use the detailed information of the article. Protection Status
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