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What is the suction power of a vacuum cleaner?

suction power of a stick vacuum cleaner

How much suction power does a stick vacuum need to vacuum your home properly? This is a very common question, especially among those who have pets or small children and need to clean their house regularly.

The vacuum cleaner is an indispensable tool to maintain the hygiene of your home, so if you have to buy one it is important that you know what suction power you need to get the results you expect.

In this article, we’ll explain what suction power is, how it’s measured, and how much power you need to suck up the different types of dirt you may encounter in your daily life.

What will you find in this guide?

What is suction power?

Suction power is a measurement that determines the amount of air a vacuum cleaner can suck up. through its nozzle to trap dirt and debris from carpets, floors and other surfaces.

In the case of bagless vacuum cleanersThe suction power is expressed in watts (W) or kilowatts (kW) and is measured by the air flow and the differential pressure generated by the motor. This information can be found on the box of the vacuum cleaner you want to buy or in its instruction manual.

Another way to determine the suction power of the vacuum cleaner is with the air watt (AW) or with the water lift (WL): AW measures the performance of the vacuum’s suction motor, while WL measures its suction pressure. The higher the AW, the more powerful the vacuum motor. Likewise, a higher WL means greater suction power.

Suction power of a vacuum cleaner

In your daily life, you should bear in mind that an efficient motor will have a higher suction powerallowing it to pick up dirt more efficiently. However, be careful if you want to vacuum delicate surfaces. You need to moderate the power to avoid damaging them.

In addition, the suction power is also conditioned by the type of vacuum cleaner: bagless models tend to have greater suction power, while those with a bag, since they have to go through a larger filter, have lower performance.

What are the pascals (Pa) of a vacuum cleaner?

A pascal (Pa) is a physical unit that indicates the pressure difference and corresponds to the pressure generated by a force of 1 newton on a surface of 1m2.

Suction Power Robot Vacuum Cleaner

It is used in vacuum cleaners because, to work, they must create a vacuum that allows them to suck in both dust and dirt.. The higher the Pa value, the greater the vacuum created and therefore the greater the suction power of the vacuum cleaner. You’ll find that kind of value in descriptions of robot vacuums, which at around 1500 Pa already start performing well for everyday household cleaning.

On the other hand, you have probably seen the kPa (kilopascals) measurement. Since pascals are small units, kPa is used.equivalent to 100,000 pascals. This is more common for other types of vacuums, as they require more power to cover the distance between the brush or nozzle and the tank.

In general, a handheld vacuum cleaner needs about 5 kPa to work properly. A stick vacuum model requires around 11 kPa, and cordless vacuums operate at 20 kPa and above.

Why is suction power important?

Suction power plays a key role in the performance and efficiency of the vacuum cleaner.. If it’s not strong enough, it won’t be able to properly remove dirt and debris. And if it’s too powerful, it could damage furniture, carpets or surfaces to be cleaned.

How much suction power do you need in your vacuum cleaner?

To gauge how much suction power you need to clean your home, you first need to consider the size of the room, the amount of dirt accumulated, and the type of dirt.

room size

For example, if the room is small, an energy-efficient vacuum cleaner with suction power between 400 and 500 W will be more than enough. On the other hand, if the room is large, we recommend that you look for a vacuum cleaner with a minimum power of 800 W.

amount of dirt

The amount of dirt is also relevant, the more power needed, the more dirt there is, such as in houses where there are many people, small children or pets, as well as if it is from a windy place, close to nature or on construction sites, environments that accumulate more dirt.

Type of dirt

To clean the dust, pet hair and dirt In an apartment, a simple vacuum cleaner of about 400-500 W will suffice.

To vacuum liquidsyou should choose a vacuum cleaner with a suction power of at least 600W. But make sure the model you have can handle this type of dirt, because not all models can do this and you could damage the engine.

For dirt, sand and other larger and heavier dirt.If you use a vacuum cleaner with a suction power of 800W or more, it is recommended to use a vacuum cleaner with a suction power of 800W or more.


In conclusion, the suction power of the vacuum cleaner is an important factor when choosing the ideal vacuum cleaner for your home.

Consider the size of your home, type of flooring, and whether you have pets to determine which vacuum best suits your needs. With the right vacuum cleaner, you can be sure that your home will always be clean and free of dirt.

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