Do you have an allergy problems like some kind of airborne allergen? Do you want to solve a long-lasting odor problem? Well, if you are experiencing these kind of problems, I think you need to have an air cleaner or an air purifier. And there is this site that are going to give you a guide in buying an air purifier. In this site they are also giving details on various kinds of products designed to remove allergens and pollutants from the air. And one of the products designed to remove allergens and pollutants from the air is the hepa air cleaners . HEPA (High Efficiency Particulate Air) is a kind of filter that is used in air purifiers and are designed to filter out extremely small pieces of dirt from the air. It can filter out as small as .3 microns. So, if you are interested about this hepa air cleaners, just visit the air cleaners guide site and you will see some couple of air cleaners that use this kind of filter.