Basically this machine has 3 consumable filters, 2 in the front and one at the back. There is also a permanent plastic cone filter which will only need replacing if lost.

 

Combat Ultra Cone Filter

 

 


 

The plastic filter cone is located in the clear bin assembly and should be checked every time you empty the dust from your vacuum. It is simply a matter of removing the cone by twisting (like a standard light bulb) and brushing it clean. If it is particularly dirty it is fine to wash but must be absolutely bone dry before putting back in the vacuum. The purpose of this cone is to prevent big bits of dirt from getting to the 2 pre motor filters so they don’t wear out prematurely.

 

Combat Ultra Filter Cone 

 

Both pre motor filters are found at the back of the dust bin assembly and should be checked every month. The thinner foam type filter should be washed regularly and left to dry completely before replacing. The thicker HEPA filter will last the best if you tap it out regularly (each month). This filter is also washable as in it won’t disintegrate if washed but in my experience washing is not as good at getting the dust out as tapping it is. Even though both of these filters can be cleaned I have found that after 3-6 months they no longer return to their best condition and require replacement. Even though these filters will cost a little to replace I would encourage you to do this regularly as it will lengthen the life of the vacuum and reduce repairs as well. So in the long run replacing the filters will work out cheaper than getting a little extra life out of the filter.

Nilfisk Combat Dust Bin Assembly

Nilfisk Combat Ultra Pre Motor FilterNilfisk Combat Ultra Hepa Filter

As a side note if your filter has a split, tear or other physical defect it will need to be replaced even if it is not yet 3 months old. The split will let dust through to the motor and will cause more damage than you might imagine.

Nilfisk Combat Ultra Exhaust Filter

The last filter is a thin exhaust filter which is essentially a bit of felt in a plastic frame at the back of the vacuum. This really is the least important in terms of performance and also the vacuums life. It’s main job is to make the exhaust air clean and honestly if the front filters are maintained this will have little work to do so should only need changing every 6-12 months. It is worth noting that this filter is not washable, once it starts to wear or get too grey or black it just needs to be thrown out and replaced.


 

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