Importance Of an Air Purifier Pre-Filter
Jason Uvios
When we talk about air purifiers we generally are discussing
about either ionic air purifiers or HEPA air purifiers or may
be the more controversial ozone air purifiers. This is normal
as they represent the basic technology behind air purifiers and
they should be treated with importance. But what tends to get
left out in all these discussion is the importance of the
pre-filter in an air purifier.
No matter how advanced an air purifier is, it needs to have a
pre-filter. The pre-filters are built to capture any
particulates floating in the air which are above the size of 5
microns. However some pre-filters are designed to trap
particulates only above the size of 10 microns. Now
particulates of that size would mean pre-filters are effective
against pet hair and larger dust particles. But the question
would be, why should we need an air filter at all since these
particulates can be easily trapped by a normal filter. The
answer would be, to protect the filters and let them do their
job properly.
The filters built in any air purifier are built to trap much
smaller particulates than the size of 5 or 10 microns. So they
could have easily captured the pet hair or the larger dust
particles. But using them for capturing particulates of larger
sizes will significantly reduce their efficiency.
However, it would be wrong to imagine that having a pre filter
would have been enough. Particulates of size above than 5
micron which remain suspended in air are very few. There would
be approximately 400 to 800 particles of size equal or larger
than 5 microns in about 1,000,000 particles. So the real job of
removing particulates from the air still lies with the pores of
the actual filter. The gas or carbon filters are therefore
lined after the pre filter so that it can act on the smaller
particulates better. It is the same with HEPA filters too.
The kind of air purifier you get for your room will depend on a
few things. Depending on how much your budget is and how much
you need it, you can decide on the filter. With HEPA filters,
you will achieve 99.7 percent purity in the air you breathe.
However, if your need is not that great or your budget demands
you o be economical, you can go for the more basic filters. You
should also remember the dimension of your room, as that will
dictate the capacity of the air purifier.
We also must realize that a filter like HEPA filter are much
too expensive to be removing particulates of size more than 1
micron. Using it for such particulates would be an utter waste
of money. One should protect such expensive filters to do the
more sophisticated cleansing.
Therefore, even if we don't pay much heed to the pre-filter in
our air purifier, it plays a significant role in the efficient
working of the purifier.
About The Author: Jason Uvios writes about on Importance of the
Pre-Filter to visit :- http://www.crispairpurity.info,
http://www.air-purity-now.info
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