One of the most effective air cleaning technologies available today is that used in the HEPA air purification systems, said to remove 99.97% of particulates from the air. This type of air cleaner, however, employs special air purifier filters, which must be changed on a regular basis in order to maintain the system’s efficiency. Selecting the Best Air Purifier for your home can be easy if you understand what to look for in a good air purifier. With all the brands of air purifiers on the market, I understand how it can be information overload.