HEPA Air Purifier

http://www.ultraclean-cn.com/ 2006-9-27 11:04:17
[Brief] HEPA ,the air purifier with HEPA can highly effective gets rid of smaller particles...

HEPA(High Efficiency Particulate Air Filters)

 It can highly effective gets rid of smaller particles. However, it's also extremely expensive. Tips: make sure that if you are getting an air purifier with a HEPA filter, you need to know the time it needs to be replaced. Many times it's annually, and it can cost almost as much as the air purifier itself. There are many cheap filters that you can clean on your own. They only get big dirt and not the fine particles - but they reduce the load on the HEPA filter and mean you have to change it less often. A lot of air purifiers use both at the same time for this reason - first it goes through the cheap filter you can wash and reuse, then anything that doesn't catch goes through the HEPA filter.