lucubrando

I am in the market for an air purifier right now but with all of the different ones out there how do I know which one is best suited for my needs? All I really know for sure is that I want to look for indoor air purifiers that has a HEPA filtration system in place. I heard that those are the best because the filter gets rid of all kind of things like pollen, pet dander, dust and mold spores. These would all be great things to dispose of especially since I suffer from asthma and need all the help I can get.