I cannot speak on behalf of Festool, but...

Is the feature you are looking for the one that 'shocks' clogged dust off of the filter (at least, that's what I think it does...)?  If so, I think it's referred to as 'Autoclean' - and thus the CTL26 AC might be the thing you want.
A search for that or the term 'Autoclean' might yield something that's helpful to you.

(If I've misunderstood, apologies - but I've not come across the term 'dedusting' before in a Festool context.)

This feature doesn’t exist on the CT machines simply because it’s not necessary - and TBH I have no idea why it’s been included on the small machines either. The only other machine I’ve ever encountered with this feature is the old Nilfisk 26/21 I used for years before upgrading to Festool extraction - and despite the fact that it was on there - I never needed to use it once.

What it does is to use exhaust air from the motor to reverse-blow and unclog a blocked/fully loaded filter ------------ whilst also putting the motor under massive stress because you have your hand over the end of the hose. The motor doesn’t max out and scream during this operation for no reason.

But (as any of the countless CT users on here will tell you) - the superb efficiency of Festool’s HEPA bags means that under normal woodworking conditions, the filter remains almost spotlessly clean because no dust is ever reaching it - the filter’s a ‘last chance saloon’ method of ensuring that sub-microscopic particles don’t get expelled to the outside. Constantly reverse-blowing it is a bit like taking your undriven, completely clean car out of the garage every day and washing it. Unless you plan on using your extractor exclusively for collecting mineral dust without a bag, you don’t need it. In that case - you need a machine with the AC function.

To put this into perspective - I’m a professional woodworker and I use my CT26 continuously from anywhere between 2 and 6 hours a day x 6 days a week, averaging around 20-25 hours I’d guess. My CT is just over 3 years old, and at close to 3000 hours of use, has its original filter on it. It's still as clean as a whistle.

Hope that sets your mind at rest.
Kevin

Hi, just a thought the inclusion of the manual cleaner ,for small fine dust jobs.I have a ct33 with same feature and for small fine dust jobs it works great.However my 36ac works better

Though it is labeled in the manual (1-16) there is otherwise NO mention of it, nor its use in the manual.

The description of how to use the lever is on page 14 of the manual, in section 9.4

My experience with the CT26 is the same as woodbutcherbower said. Mine is just over 3 years old, used daily, often sanding solid surface material (Corian) and the main filter looks brand new.
The thing I am a bit curious about is how the CT15 works out for me. I recently bought one the use on the other end of the shop.

My experience with the CT26 is the same as woodbutcherbower said. Mine is just over 3 years old, used daily, often sanding solid surface material (Corian) and the main filter looks brand new.
The thing I am a bit curious about is how the CT15 works out for me. I recently bought one the use on the other end of the shop.

And my experience has been the same with about the same time frame.

Thanks everyone for all the great responses to my "mysterious dedusting"!!!! I guess it is becaused my cheapo shop vacs always get clogged that this "dedusting" feature sounded great, but those are NOT a Festool! I liked the Midi because of this, but also more so because it included the Bluetooth. However, seems like it would be better to opt for the CT26 at the very least due to bigger capacity, and the non-angled hose input. Weight was a consideration, but after visiting Rockler and handling the Midi, the CT 26 isn't that much more. Haven't ordered yet, but probably leaning toward the CT26 now versus the Midi.

Thanks for the help in making my first leap into the "green machines" ..... donations welcome!!!!!!! Ehhh, I'll just rob our kids piggy banks I guess!