Filter choice

Choosing the right filter

The airflow of your vacuum cleaner is the most important factor in determining which cyclone filter is suitable for your vacuum cleaner.  The manual of your vacuum cleaner will show the airflow with one of the following indications:

  • number of liters air per second;
  • number of liters air per minute;
  • number of m3 air per hour.

This airflow value must be between the minimum airflow rate and the maximum airflow rate of a filter. Below is an overview of the minimum airflow that each filter requires and the maximum airflow that each can handle:


Cyclone filter
model 2

Cyclone filter
model 3

Cyclone filter
model L

Cyclone filter
model XL

Cyclone filter

Airflow per sec

Min: 28 liter
Max: 67 liter

Min: 28 liter
Max: 78 liter

Min: 97 liter
Max: 175 liter

Min: 222 liter
Max: 333 liter

Min: 28 liter
Max: 97 liter

Airflow per min

Min: 1680 liter
Max: 4000 liter

Min: 1680 liter
Max: 4667 liter

Min: 5833 liter
Max: 10500 liter

Min: 13333 liter
Max: 20000 liter

Min: 1665 liter
Max: 5833 liter

Airflow per hour

Min: 100 m3
Max: 240 m3

Min: 100 m3
Max: 280 m3

Min: 350 m3
Max: 630 m3

Min: 800 m3
Max: 1200 m3

Min: 100 m3
Max: 350 m3

Example: the Bosch AdvanceVac 20 vacuum cleaner can transport 70 liters of air per second. Cyclone filter model 3 is therefore the best choice for this vacuum cleaner.

Cyclone filter model 3 is suitable for 99% of all (construction) vacuum cleaners. Only very powerful, multi-motor vacuum cleaners and central extraction systems need a larger filter, such as our cyclone filter model L and model XL.

Not sure how many liters of air your vacuum cleaner can transport? Then you can also check the inner diameter of the vacuum cleaner hose. If it has an inner diameter between 27mm and 50mm, then the cyclone filter model 3 is suitable in most cases.