   
Hepa Filter
Air Purifiers
Hepa Filter Air
Purifiers describes either the simplest form of air purifier, that purifies impure air only by means of a
Hepa Filter or that of an air purifier which employs the use of a Hepa filter as the
first stage in a multi stage air purification cycle. Whichever is the case the Hepa filter has proved to
be most effective in achieving a remarkable level of filtration.
The Hepa designation
standing for 'High Energy Particulate Arresting' filter is self explanatory. The name Hepa denotes an
industry standard rather than a brand name and qualifies for this designation by being capable of removing
99.97% of parliculants as small as 0.3 microns from air that passes through
it.
Hepa filters have
been around for many years, originating from the second world war era, when it was used to stop the spread of
radio active contaminants. It's use in Hepa Filters Air Purifiers on a commercial basis developed in the
1950's and soon gained the reputation of being a very efficient
filter.
Produced in all
sizes, the Hepa filter is easily adapted for all locations where it is necessary to purify an air flow. From
the largest heating and air conditioning ducted systems to the dometic vacuum cleaner the Hepa
filter can be found. Many of the portable units found in the home and office contain a Hepa
filter.
Some of the more
sophisticated air purifiers produce ozone which may not suit every situation, in which case the static
mechanical Hepa filter will do the job adequately. The one drawback associated with their use is the
necessity to periodically replace the filter when the time comes. Fortunately this is not necessary too
often.
One word of warning
to those who may be considering the purchase of a Hepa filter air purifier and that is that some
manufacturers advertise the Hepa element of the purifier in a misleading way. Rather than the word
Hepa being used, the unit may be described as a Hepa-type or Hepa-like air
purifier. This could indicate that the filter used in such a machine may be of inferior
quality to the genuine Hepa filter.
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