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Thread: Dust filtration levels
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7th October 2019, 08:18 AM #1GOLD MEMBER
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Dust filtration levels
I am looking at purchasing another vacuum and struggling with the filtration levels.
What is the difference between a L class with Hepa to an M class? The filtration levels appear to be basically the same. From what I have read the Festool L and M use the same filter and both have Hepa filters so unofficially you are getting identical filtration but one doesn’t carry official M category certification
Also I have read you cannot use a Hepa filter with the auto clean function as it damages the filter so not sure if I should look for the auto clean function or have Hepa
I am told the most popular Festool vac sold by far is the 26 litre in the L category.
Many of the M category vacs from various brands do not have Hepa filters
It’s main use will be with a tracksaw and Rotex sander etc and other mobile tools
Appreciate some feedback, the retailers don’t seem to be able to clarify the differences
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7th October 2019 08:18 AM # ADSGoogle Adsense Advertisement
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16th October 2019, 10:08 PM #2
Hope this helps a bit: Festool - Understanding Dust Types
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17th October 2019, 04:50 PM #3SENIOR MEMBER
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A karcher rep explained the difference to me, as below. Probably technically not super accurate but for what us woodies do its good enough for me.
L and M class extractors use exactly the same filter, the biggest difference is M class extractors will beep when extraction drops below a certain point. M class is more for those that work with concrete, for wood L class extractors are more than capable and no real benefit is gained from an M class extractor.
I think more important will be getting an extractor capable of having a HEPA filter, better still moving extractor outside.
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17th October 2019, 05:20 PM #4GOLD MEMBER
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Thanks for the replies, Tonzeyd via Midnight mans link I managed to find the explanation and you are right.
Here is Festool’s info on it Festool - Explained: M Class Dust
I am a bit surprised that no one could easily explain the differences when I was looking to buy a new vac.
Thanks fir the link Midnight man.
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