![]() The H-class vacs are a different beast though. on filtration, that is kinda expected, right ? This is because the vacs exceed the L-class minimum requirements, they also exceed the M-Class requirements (but cannot be sold as M-class compliant as do not have the sensor required by the standard). So, while the (basic) HEPA standard -is- stricter than both the L-class and the M-class, the "HEPA" Vacs sold by Festool are exactly same as the L-Class vacs sold by them and have exact same filters as their M-class vacs too. There is no such flow sensor requirement in HEPA though as the "basic" HEPA standard covers only the filtration part, not the air volume part. This allows the user to stop the work and remediate the issue. This is because they lacks the sensor which will alert the user that the air volume dropped below safe thresholds and the whole system performance is affected - e.g. Still, the L-Class units cannot be sold as M-class. And you can also have a vac which meeds M-class yet does not meet HEPA due to a weaker filter.Īll Festool L/M class use EXACTLY the same filters and have the exact same performance within series. That way, you can have a vac which meets HEPA, but does not meet M-class. This is unlike HEPA which addresses only the filtration part. The European L/M/H classes is more strict in that the system must GUARANTEE sufficient filtration AND sufficient dust extraction (aka air volume). (Side note: other parts of the Festool website in Aus says lead = H-class machine requirement!) Thanks for any help - unfortunately the Festool helpline wasn't particularly so. I understand there are other differences between the models but am most interested in filtration quality as the machine will likely see little use other than an initial site clean post-renovations (need to keep the missus on side!). ![]() Some painted windows sills were in pretty bad shape. I won't be doing this explicitly - but I can't say for sure that there aren't a few nasty dusts around the site. I've even found a Festool Aus brochure (see below) that says the use of a HEPA in an L-class machine is suitable for capturing 'lead based paint' particles. I assume the inclusion of the HEPA filter elevates the filtration level from 99.0% to 99.9% - but I guess this is assumes the machines are the same in other ways, too. I've read a couple of old threads that broadly discuss the above but would like confirmation that Festool's CT 15l HEPA Class Dust Extractor will have equal-if-not-better dust extraction filtration quality than the CTM MIDI-I 15l M Class Dust Extractor (which comes standard with an 'M Class filter').Īs I understand it, Festool AU have been fitting all CTs with a HEPA filters for some time now - which I understand to be a level above M Class. Hi all, period home renovator new to the forums.
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