Vacuum Cleaner Suction Power Calculation – Understand the Importance!

When it comes to keeping your home clean and tidy, a good vacuum cleaner is essential. But with so many options on the market, how do you choose the right one? One factor to consider is suction power, which refers to the ability of the vacuum cleaner to pull in air and filter out dirt and debris.

The stronger the suction power, the more effective the vacuum cleaner will be at removing dirt and other particles from various surfaces.

Factors that Determine Suction Power of a Vacuum Cleaner

There are several factors that can impact the suction power of a vacuum cleaner:.

Motor Type

The type of motor used in a vacuum cleaner can have a significant effect on suction power. Brushless motors tend to generate more suction power than brushed motors.

Motor Size

The size of the motor also plays a role in suction power. Larger motors generally produce more suction power than smaller motors.

Dustbin Size

The size of the dustbin or bag can also affect suction power. If the dustbin is too small, it can become full quickly and restrict the flow of air, leading to a decrease in suction power.

On the other hand, a larger dustbin allows for more airflow, resulting in stronger suction.

Filter Type

The type of filter used in a vacuum cleaner can also impact suction power. For instance, a HEPA filter, which is designed to capture extremely fine particles, can slightly reduce suction power compared to a non-HEPA filter.

Hose Type

The type of hose used in a vacuum cleaner can also influence suction power. A hose with a larger diameter allows for more airflow and, therefore, greater suction power.

Measuring Suction Power

Suction power is usually measured in units of airflow, such as cubic feet per minute (CFM) or airwatts (AW). It’s important to note that these units of measurement do not directly reflect the strength of the suction force. Instead, they indicate the volume of air being drawn in and filtered through the vacuum cleaner.

There are several methods for measuring suction power, including water lift tests and orifice tests. These tests involve measuring the pressure difference between the inlet and outlet of the vacuum cleaner and can be used to compare the suction power of different models.

You can check our article on how to calculate suction pressure of a vacuum cleaner.

When comparing the suction power ratings of different vacuum cleaners, it’s important to keep in mind that the testing methods and conditions may vary. As a result, it may be difficult to make an apples-to-apples comparison between different models.

Measure it now with our Vacuum Cleaner Suction Power calculator.

Vacuum Cleaner Suction Power Calculator

Enter the values below to calculate the suction power of your vacuum cleaner:



Considerations for Choosing a Vacuum Based on Suction Power

When selecting a vacuum cleaner based on suction power, there are several factors to consider:

Surface Type

Different surfaces may require different levels of suction power. For example, carpets may require more suction power than hardwood floors.

Debris Type

The type of debris being collected can also impact the required level of suction power. For instance, a vacuum cleaner with strong suction power may be necessary for picking up larger particles, such as pet hair.

On the other hand, a model with lower suction power may be sufficient for smaller particles, such as dust and dirt.

Frequency of Use

The frequency of use should also be taken into consideration when choosing a vacuum cleaner based on suction power.

If the vacuum cleaner will be used frequently, a model with strong suction power may be more suitable to handle the increased workload.

Available Storage Space

The size and weight of the vacuum cleaner should also be considered, especially if storage space is limited.

Larger, heavier models may be more difficult to store and maneuver, while smaller, lightweight models may be easier to handle and store.


Finally, the budget is an important factor to consider when choosing a vacuum cleaner based on suction power.

Higher-end models with stronger suction power may be more expensive, while budget-friendly options may have lower suction power.


In conclusion, suction power is a crucial factor to consider when choosing a vacuum cleaner. The suction power of a vacuum cleaner is determined by a variety of factors, including the type and size of the motor, the size of the dustbin or bag, the type of filter, and the type of hose.

Suction power can be measured using various methods and units of measurement, such as CFM or AW. When choosing a vacuum cleaner based on suction power, it is important to consider the type of surfaces to be cleaned, the type of debris to be collected, the frequency of use, available storage space, and budget.

By considering suction power, you can ensure that you choose a vacuum cleaner that is well-suited to your cleaning needs. Moreover, you should always calculate the overall vacuum cleaner power consumption.

About Christopher James

Christopher James is the founder and chief content creator at He is a content planner, editor, and expert with a passion to write about home cleaning solutions. He analyzes and reviews....Read Full Bio