Product review (1 stars): Don't Buy This Product
I bought this product and it is easy to install and works as advertised.  HOWEVER, I went to the DiFi website and placed an order for replacement filters, which are $19.99 each), and was given the run-a-round and flat out lied to about the status of my order.  When I would inquire as to the status of my order I was told that my order would be shipped priority mail and given a set of dates I could expect to get it.  This happened twice over a period of three weeks.  I had to cancel my order and dispute the charge with my CC company.  The filter is worthless if you can't get replacement filters.