Sum Guy wrote:
Are the Dyson vacuum cleaners as good as they say they are?

Are they worthy of the tv-commercial air time? Or is this a case of
"if you advertize it, they will buy" ?

There is a little missleading information in their commercials in saying
that they do not loose suction. Their claim is based on the use of cyclone
centrifugal dust separation. Not the first to use them. They are used in
industrial applications and have been used in many vacuums. However,
cyclones work best with large dirt, fine dust and even lighter bacterial and
viruses rarely get separated because they don't weigh enough to be affected
by the centrifugal force. Dysons sometimes mention they use a Hepa final
filter to clean the air. Hepa is not a standard and can mean many things,
but, to add any filter at the end of the exhaust can result in the filter
becoming plugged and reducing the amount of air that leaves the vacuum,
thereby loosing suction, which is what they advertise that it does not do.

I prefer central vacuums, with the exhaust blowing to the outside so that
fine particulate and other unwanted items are discharged to the outdoors,
not back into my house.