Importance Of Pre Filters – You Need To Know
When we talk about air purifiers, we normally discuss ionic air purifiers or ozone air purifiers. This is normal as they represent the simple technology behind air purifiers and they should be treated with importance. But what tends to get left out in all these discussions is the importance of the pre- filter in an air purifier.
No matter how advanced an air purifier is, it needs to have pre-filter. The pre-filters are built to capture any particulates moving in the air which are above the size of 5 microns. Some pre- filters are designed to trap particles only above the size of 10 microns.
Now particulates of that size would mean pre- filters are effective against pet hair and large dust particles. The question arises, why we should 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 air purifiers like sand trap louver are built to trap much smaller particulates than the size of 5 or 10 microns. They could have easily captured the pet hair or large dust particles. Using them for capturing particulates of larger sizes will significantly reduce their efficiency.
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 are about 400 to 800 particles of size equal than 5 microns in about 1,000,000 particles.
The real job of removing particles from the air still lies with the pores of the actual filter. The gas or carbon filters are lined after the pre filter so that it can act on the smaller particles better.
Factors:
The kind of air purifiers depend on few things:
How much your budget is and how much you need it, you can decide on the filter.
If your need is not that great you have to be economical, you can go for the more basic filters.
You should remember the dimensions of your room, as that will dictate the capacity of the air purifier.
We also realize that some filters like sand trap louver is too much 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 classier cleansing.
If we don’t pay much attention to the pre-filter in our air purifier, it plays a significant role in the efficient working of the purifier.