This purifier ionizes particulates in the air and attracts them to a cleanable surface. Because it has no moving parts it is quiet and inexpensive to run.
Online reviews vary wildly about the purifier. Some claim that the unit does a great job of cleaning the air. Others claim that it does not do a good job.
The most interesting debate about the product is that it produces excessive amounts of ozone in your living space which can be detrimental to your health. Some have purchased an add-on ozone guard to deal with this problem.