My vacuum cleaner does not have a HEPA filter and I would like to get a cleaner that does.
Can someone who understands the physics of HEPA filtration help me understand HEPA a bit better please. Google is not much of a friend for this info!
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Is HEPA a registered trademark?
What technology does a HEPA filter make use of? Is it nothing much more impressive than a very fine aperture standard filter?
is the HEPA filter on a vacuum cleaner likely to need replacing more often than non-HEPA on account of the greater dust it traps?
Can a HEPA filter be washed or otherwise cleaned so that it can be reused? Or is the life of a HEPA filter so long that this is not a consideration.
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Thank you for any info.