Interesting question and having quite a bit of experience you need HEPA filter but not only that, it needs to be a fully sealed machine otherwise the dust just leaks out of the machine anyway. I now have 2 Dyson air purifiers based on the fact that they are fully sealed - there is an interesting video showing competitor models leaking air even though they do technically have a Hepa 13 filter.
sunshine_buttons t1_ixle9ya wrote
Reply to Could someone recommend an air purifier that doesn't need the filters thrown out and changed? I am willing to clean them of course! I have BAD allergies and 3 cats so it needs to work well in medium size areas. by Relaxandbreath
Interesting question and having quite a bit of experience you need HEPA filter but not only that, it needs to be a fully sealed machine otherwise the dust just leaks out of the machine anyway. I now have 2 Dyson air purifiers based on the fact that they are fully sealed - there is an interesting video showing competitor models leaking air even though they do technically have a Hepa 13 filter.