Simply removing the housing and cleaning the fan would be enough if you do it from time to time. If you haven’t cleaned your inline fan in quite some time, then you would need to detach it and take out the removable parts and clean each of them carefully. It is best advised to wipe at least the exterior of the fan on a time to time basis so that dirt and dust don’t enter the fan. One thing that has to be kept in mind at all times is that it contains electric mechanisms and must not be immersed in water. rn